Zeolite Adsorptive Separation Patent Landscape 2026
Zeolite adsorptive separation is a mature, highly concentrated field dominated by Chevron USA and a cohort of established energy and industrial-gas companies, with the United States as the primary filing jurisdiction. Activity has plateaued near its 2017 peak, though ExxonMobil Technology & Engineering shows a recent uptick that merits attention.
Chevron leads a concentrated field of energy and industrial-gas incumbents
Chevron USA holds the top-ranked position with 659 patent records, more than twice the count of second-ranked UOP LLC at 295 patent records — a gap that signals a structurally dominant portfolio rather than a contested lead.
The top five filers collectively account for 39% of the combined patent records of the hundred largest filers, confirming high but not absolute concentration; a mid-tier of industrial-gas specialists (Air Products, L’Air Liquide, Praxair) and materials suppliers (NGK Insulators, Tosoh, CECA) sustains meaningful competitive depth below the top two.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Chevron USA Inc | 659 | |
| 2 | UOP LLC | 295 | |
| 3 | Arkema France SA | 179 | |
| 4 | AIR PROD & CHEM INC | 176 | |
| 5 | NGK Insulators Ltd | 174 | |
| 6 | LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PR… | 160 | |
| 7 | Praxair Technology Inc | 149 | |
| 8 | Tosoh Corporation | 113 | |
| 9 | EXXONMOBIL TECHNOLOGY & ENGINEERING CO | 107 | |
| 10 | CECA SA | 83 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | Asahi Kasei Corporation | 82 | |
| 12 | Union Carbide Corporation | 79 | |
| 13 | IFP Energies Nouvelles | 68 | |
| 14 | BOC Group Inc | 64 | |
| 15 | Zeochem LLC | 59 | |
| 16 | CHEVRON RESEARCH & TECHNOLOGY CO | 56 | |
| 17 | CHINA PETROLEUM & CHEMICAL CORP | 54 | |
| 18 | Mitsubishi Chemical Corporation | 53 | |
| 19 | The University of Tokyo | 50 | |
| 20 | COUNCIL OF SCI & IND RES | 48 |
Chevron’s scale, anchored in zeolite synthesis and gas-phase separations, establishes high freedom-to-operate barriers for new entrants targeting the same core routes; challengers entering adjacent application spaces — such as membrane separation or specialty hydrocarbon fractionation — face a less crowded IP environment.
The most recent 18–24 months of filing data are subject to publication lag and will be revised upward as patents are published; the apparent drop in 2024–2026 figures should not be interpreted as a structural decline. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Activity plateaued after a 2017 peak; chemistry and separation processes dominate the technology mix
The annual filing trend reveals a field that reached its peak in 2017 and has since oscillated without sustained growth. The technology composition chart shows three IPC classes — chemical/physical processes (B01J), inorganic compounds (C01B), and separation processes (B01D) — collectively accounting for the large majority of coverage, with hydrocarbon and organic chemistry classes representing a secondary tier.
Annual filing trend
Annual filings peaked at 143 records in 2017, with subsequent years oscillating between 81 and 140 records. The 2024–2026 figures appear low due to publication lag and should not be read as a sustained downturn.
↗ Hover for values · click a bar to ask EurekaTechnology composition
B01J (chemical/physical processes and catalysis), C01B (non-metallic elements and inorganic compounds), and B01D (separation processes) form the dominant cluster, reflecting the field’s core in zeolite synthesis and gas/liquid adsorption. C07C (acyclic and carbocyclic compounds) and C10G (hydrocarbon refining) represent a meaningful secondary tier tied to refinery and petrochemical applications.
↗ Hover for values · click a bar to ask EurekaHighly cited patent families surfaced by the query
Citation-heavy patent families returned by the query. Use this section as citation context, not as a curated list of the most topic-specific patents.
Binder-free molecular sieve zeolite granules which…
The present invention relates to binder-free molecular sieve zeolite granules of lithium zeolite A and lithium zeolite X, a process for preparing these molecular sieve zeolite granules and their use for preparing nitrogen or oxygen from air by pressure swing adsorption. (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Zeolite SSZ-25 | 1,230 |
| 2 | Zeolite SSZ-13 and its method of preparation | 1,057 |
| 3 | Zeolite SSZ-26 | 428 |
| 4 | Apparatus, method and system for delivering oxygen… | 424 |
| 5 | Zeolite SSZ-39 | 422 |
| 6 | Small crystallite zeolite CHA | 412 |
| 7 | Zeolite SSZ-32 | 374 |
| 8 | Zeolite SSZ-35 | 352 |
Ranked by total forward citations. Citation counts favour older and broadly cited patent families, and broad or adjacent patents may appear when they match the search scope. Treat this section as citation context, not as a curated list of the most topic-specific patents. Some patent titles may be shown in their original, non-English language where an accurate translation could not be guaranteed.
What the patent structure means for R&D investment decisions
The combination of a mature lifecycle, high incumbent concentration, and a well-defined technology core shapes the risk/reward profile for new entrants and established players alike. Four structural observations are most relevant to R&D strategy.
Field is mature with annual volume plateaued near its 2017 peak
The lifecycle evidence places zeolite adsorptive separation firmly in a maturity stage: annual filings have plateaued near their 2017 peak of 143 records and have not returned to that level in subsequent years. For R&D teams, this signals that incremental improvements to established zeolite types (e.g., CHA, SSZ-series) will face dense prior art; differentiated value is more accessible in application-specific or materials-integration angles that the core corpus does not yet cover densely.
Mature fieldTop five filers hold 39% of the leading hundred filers’ combined records
Chevron USA’s 659-record lead over UOP LLC’s 295 creates a two-tier structure: a dominant incumbent and a cohort of well-resourced challengers. The top five filers’ 39% share of the hundred largest filers’ combined total indicates that mid-tier players retain real positions. New entrants are unlikely to compete directly with Chevron on core zeolite synthesis claims but can carve space in specialized membrane, heterocyclic, or fuel-treatment sub-domains.
High concentrationTosoh and Toray lead co-filing activity; Chevron co-files with U.S. universities
The most active co-filing pair is Tosoh Corporation and Tosoh Corporation’s predecessor entity (23 joint records), reflecting an internal corporate consolidation pattern. ExxonMobil Technology & Engineering and Georgia Tech Research Corporation co-filed 6 records, signaling an industry-academia link in advanced separation research. Chevron USA co-filed with the University of California Board of Regents (5 records) and the University of Michigan Board of Regents (3 records), indicating a sustained university-partnership model for novel zeolite structure development.
Industry-academia linksU.S. and EPO filings dominate; Asia-Pacific enforcement coverage is selective
The United States leads in patent records, followed by Europe (EPO) and Japan. China, Australia, India, and Canada form a secondary tier, while Southeast Asian markets (Singapore, Malaysia) have limited coverage. This geography implies that freedom-to-operate analysis in emerging markets such as India and Southeast Asia may reveal less encumbered space, particularly for application-specific process variants not widely filed outside the U.S. and EPO.
U.S./EPO-centricGo beyond the landscape: Eureka’s TRIZ Solution agent breaks down an R&D problem and returns patented concept solutions, each with a technical approach and cited patent & literature evidence.
| Applicant | Collaborator | Co-filings |
|---|---|---|
| Tosoh Corporation | Toyo Soda Manufacturing Co Ltd | 23 |
| ExxonMobil Technology and Engineering Co | Georgia Tech Research Corporation | 6 |
| Chevron USA Inc | The Regents of the University of California | 5 |
| L’Air Liquide SA pour l’Etude et l’Exploitation des Procedes Georges Claude | Air Liquide Sante International | 4 |
| Chevron USA Inc | The Regents of the University of Michigan | 3 |
| Tosoh Corporation | Toray Industries Inc | 2 |
| Tosoh Corporation | Shibaura Institute of Technology | 1 |
| Tosoh Corporation | Mitsubishi Heavy Industries Ltd | 1 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Chevron USA anchors the field; ExxonMobil Technology & Engineering is the fastest-rising established challenger
Two players stand out in opposite directions: Chevron USA for the size and breadth of its zeolite synthesis and gas-separation portfolio, and ExxonMobil Technology & Engineering for a strong recent filing uptick that distinguishes it from most peers who have moderated activity.
Chevron USA Inc
Chevron USA leads with 659 patent records, concentrated in zeolite synthesis (C01B 39), catalysis/adsorption (B01J 29), and gas-phase separation (B01D 53). Its recent filing trend shows a 3.2× increase versus the prior three-year period, suggesting active portfolio renewal rather than a legacy-only position. Co-filing relationships with the University of California and the University of Michigan indicate continued engagement with novel zeolite structures.
patent records: 659ExxonMobil Technology & Engineering Co
ExxonMobil Technology & Engineering holds 107 patent records, with emphasis on separation processes (B01D 53), zeolite synthesis (C01B 39), and adsorption chemistry (B01J 20). Its recent filing trend of +65% versus the prior three-year period is the strongest growth rate among established mid-tier players, and its co-filing relationship with Georgia Tech Research Corporation (6 joint records) points to a targeted academic partnership strategy in advanced separation materials.
patent records: 107| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Chevron USA Inc | 38 | ▲ 3.2× vs prior 3-yr |
| UOP LLC | 7 | ▲ new entrant |
| NGK Insulators Ltd | 9 | ▼ -76% |
| Arkema France SA | 8 | ▼ -75% |
| ExxonMobil Technology and Engineering Co | 28 | ▲ +65% |
Under-served adjacent branches in hydrocarbon fractionation and heterocyclic compound separation
Relative to the dominant B01J/C01B/B01D cluster, several IPC branches show lower coverage within this corpus. Two of these — hydrocarbon refining applications and heterocyclic compound separations — warrant attention as adjacent areas where zeolite adsorption expertise could extend into less-crowded IP space.
C10G · Hydrocarbon oils and refining
C10G accounts for a smaller share of the corpus relative to the core separation and synthesis classes, despite the direct relevance of zeolite sorbents to refinery fractionation, dewaxing, and alkylate purification. Established players such as UOP LLC and ExxonMobil have partial coverage here, but the branch remains less densely claimed than core gas-separation routes. Teams with process chemistry expertise in refinery integration may find entry points that leverage existing zeolite materials IP without directly competing with Chevron’s core synthesis portfolio.
Search this in Eureka →C07D · Heterocyclic compounds
C07D (heterocyclic compounds) shows sparse representation in this corpus, suggesting that zeolite-based separation of heterocyclic molecules — relevant to pharmaceutical intermediates, specialty chemicals, and fine-chemical purification — is not yet a contested space among the leading incumbents. The technical plausibility is supported by the known shape-selectivity of zeolite frameworks for ring structures. Entry would require demonstrating selectivity for specific heterocyclic targets, an angle not well-served by the current portfolio concentration in gas and bulk hydrocarbon applications.
Search this in Eureka →How leading filers differ across zeolite synthesis, gas separation, and hydrocarbon processing routes
Route coverage across the main technology branches in the current evidence set.
| Player | B01J 20 · Chemical/physical processes & catalysis | B01D 53 · Separation processes (filtration etc.) | C01B 39 · Non-metallic elements & inorganic compounds | B01J 29 · Chemical/physical processes & catalysis | C01B 37 · Non-metallic elements & inorganic compounds |
|---|---|---|---|---|---|
| Chevron USA Inc | Absent | Moderate · 214 | Strong · 571 | Strong · 370 | Moderate · 131 |
| UOP LLC | Strong · 225 | Moderate · 76 | Moderate · 92 | Emerging · 40 | Emerging · 9 |
| Air Products and Chemicals Inc | Strong · 159 | Strong · 159 | Moderate · 61 | Absent | Emerging · 16 |
| NGK Insulators Ltd | Absent | Strong · 94 | Strong · 167 | Moderate · 41 | Moderate · 38 |
| CECA SA | Strong · 123 | Strong · 112 | Moderate · 49 | Absent | Absent |
| L’Air Liquide SA pour l’Etude et l’Exploitation des Procedes Georges Claude | Strong · 123 | Strong · 131 | Absent | Absent | Absent |
| Tosoh Corporation | Strong · 98 | Strong · 72 | Strong · 69 | Absent | Absent |
Frequently asked questions
The corpus covers 934 patent families. Filing activity peaked at 143 patent records in 2017 and has plateaued since, placing the field in a mature lifecycle stage.
Chevron USA Inc is the top-ranked filer with 659 patent records — more than twice the count of second-ranked UOP LLC at 295 patent records. Chevron’s focus spans zeolite synthesis, catalysis/adsorption, and gas-phase separation.
Three classes dominate: B01J (chemical/physical processes and catalysis), C01B (non-metallic elements and inorganic compounds, including zeolite structures), and B01D (separation processes including filtration and adsorption). Hydrocarbon-related classes C07C and C10G form a meaningful secondary tier.
ExxonMobil Technology & Engineering Co posted a +65% increase in recent filings versus the prior three-year period, the strongest growth rate among established mid-tier filers. Chevron USA also showed a 3.2× increase versus its prior three-year period, indicating active portfolio renewal at the top of the ranking.
The United States leads in patent records, followed by Europe (EPO) and Japan. Canada, China, and Australia form a secondary tier. Coverage in Southeast Asian markets such as Singapore and Malaysia is limited, which may create freedom-to-operate options in those regions.
The most-cited works in this corpus relate to specific SSZ-series zeolites: Zeolite SSZ-25 (1,230 citations), Zeolite SSZ-13 and its method of preparation (1,057 citations), Zeolite SSZ-26 (428 citations), and Zeolite SSZ-39 (422 citations), along with a patent on apparatus and methods for delivering oxygen (424 citations). The concentration of citations in SSZ-series zeolites reflects their foundational role in molecular sieve and selective adsorption applications.
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Disclaimer. This page is generated from PatSnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
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