Geopolymer Durability Patent Landscape 2026
United States Gypsum Co holds a commanding lead in geopolymer durability patents, with the field concentrated in ceramics and cement chemistry (C04B). Activity has plateaued near its peak on a multi-year basis, with India emerging as the dominant filing jurisdiction, signalling growing academic and industrial engagement from South Asia.
United States Gypsum Co leads a fragmented but top-heavy field
United States Gypsum Co ranks first among all filers, followed by Catholic University of America, CEMALT LLC, Commonwealth Scientific and Industrial Research Organisation (CSIRO), and Vel Tech Rangarajan Dr. Sagunthala R&D Institute — together forming a distinct leading tier.
The top five filers account for 29% of the combined output of the hundred largest filers, a moderate concentration figure that reflects a broad academic tail rather than a tightly oligopolistic structure. Below the top five, applicants typically hold single-digit counts, indicating no dominant second tier.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | United States Gypsum Co | 48 | |
| 2 | Catholic University of America | 11 | |
| 3 | CEMALT LLC | 10 | |
| 4 | COMMONWEALTH SCI & IND RES ORG | 8 | |
| 5 | VEL TECH RANGARAJAN DR SAGUNTHALA R&D INST OF SCI … | 7 | |
| 6 | Cement Australia Pty Ltd | 6 | |
| 7 | Lakehead University | 6 | |
| 8 | Easwari Engineering College | 6 | |
| 9 | JFE Steel Corporation | 5 | |
| 10 | Building Armour Industries LLC | 5 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | Ecocem Materials Ltd | 5 | |
| 12 | Kayhan Swiss GmbH | 4 | |
| 13 | Dr. S. Prabavathy | 4 | |
| 14 | Carbon Craft Design Pte Ltd | 4 | |
| 15 | National Research Council of Italy (CNR) | 4 | |
| 16 | Carbon Upcycling Technologies Inc | 4 | |
| 17 | Institut National des Sciences Appliquées de Toulouse (INSA Toulouse) | 4 | |
| 18 | King Fahd University of Petroleum and Minerals | 4 | |
| 19 | Nutech Ventures Ltd | 3 | |
| 20 | Plantaer Inc | 3 |
United States Gypsum Co’s position — anchored in C04B subclasses covering binder compositions and dimensional stability — suggests it holds the broadest claim coverage in core geopolymer chemistry. The presence of universities and research institutes near the top of
Filing counts for 2024 and 2025 are subject to publication lag and should be treated as provisional; the apparent surge in 2025 partly reflects batch publication timing rather than a verified step-change in inventive activity.
Activity plateaued after 2019; ceramics chemistry dominates the technology mix
The annual filing trend and IPC class composition together reveal both the temporal pace of the field and which technical sub-domains are saturated versus sparse.
Annual filing trend
Filings grew from 12 in 2017 to a first peak of 25 in 2019, then eased before recovering toward 24 in 2023. The 2024 and 2025 figures should be treated as provisional given publication lag; the field is best characterised as having plateaued near its 2019 peak on a multi-year basis rather than declining.
↗ Hover for values · click a bar to ask EurekaTechnology composition
C04B (Ceramics, cement and refractories) dominates with 283 patent records, dwarfing all other branches. E01C (Roads and pavements) is the nearest secondary branch at 18 records, followed by B28B (Shaping clay and cement products) at 9 — both at a fraction of C04B’s volume, confirming that applied end-use engineering and polymer-composite branches remain comparatively sparse.
↗ 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.
Geopolymer cement
A solid component activator for use in a geopolymer cement containing a silico-aluminate material comprising a mixture of sodium silicate and sodium carbonate for activating the geopolymer cement by increasing reactivity of the silico-aluminate material in the geopolymer cement when forming geopolymer concrete. (excerpt from the patent abstract)
Open this patent in Eureka →| # | Patent | Citations |
|---|---|---|
| 1 | Waste solidification and disposal method | 103 |
| 2 | Freeze-thaw durable geopolymer compositions and me… | 40 |
| 3 | Self-consolidating geopolymer compositions and met… | 32 |
| 4 | Geopolymer compositions and methods for making same | 29 |
| 5 | Dimensionally stable geopolymer composition and me… | 23 |
| 6 | Process for preparation of geopolymer foam composi… | 22 |
| 7 | Dimensionally stable geopolymer composition and me… | 19 |
| 8 | Dimensionally stable geopolymer compositions and m… | 17 |
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 competitive structure means for R&D investment decisions
Four structural signals — maturity, concentration, collaboration, and geography — shape where new entrants and established players should direct effort.
Field has plateaued near its 2019 peak
The lifecycle assessment categorises geopolymer durability as mature, with annual filings having plateaued near their 2019 peak. Incremental formulation work is heavily populated; differentiation now requires either novel activator chemistry, multi-hazard durability performance (freeze-thaw plus sulfate resistance combined), or applied end-use integration. New entrants should audit freedom-to-operate around United States Gypsum Co’s dimensional-stability and self-consolidating geopolymer claims before filing in core C04B subclasses.
Lifecycle: MaturityModerate concentration with a long academic tail
The top five filers hold 29% of the hundred-largest-filer combined output, a moderate share that masks a very long tail of single- and dual-record university filers, particularly from India. This structure means core IP is relatively accessible through licensing from a few industrial leaders, while the academic tail represents a reservoir of early-stage technology that could be acquired or licensed before commercialisation. The gap between rank-one (United States Gypsum Co) and rank-two (Catholic University of America) is particularly large, underscoring the leader’s outlier position.
Concentration: moderateLimited cross-sector co-filing; NTPC Ltd is the most active co-filer
NTPC Ltd (a Government of India company) is the most active collaborative filer, co-filing with the Council of Scientific and Industrial Research (CSIR) on two records and with Annamalai University on two records. Easwari Engineering College also co-filed with SRM Institute of Science and Technology. The low collaboration count overall suggests the ecosystem has not yet matured into the dense co-filing networks typical of more established material science fields, leaving room for consortium-driven R&D partnerships, particularly between industrial energy players and research institutions.
Collaboration: emergingIndia leads in filing volume; US and PCT routes offer broadest protection
India accounts for the largest share of patent records by jurisdiction, driven primarily by academic and governmental filers. The United States is the second-largest jurisdiction, followed by China and WIPO (PCT) at equal counts, with Europe (EPO) fifth. This distribution signals that the most commercially valuable protection corridors — PCT, US, EPO — are underutilised relative to the volume of underlying inventions filed domestically in India, representing a gap that academic licensors and industrial partners could exploit by filing internationally on proven formulations.
Lead office: IndiaGo 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 |
|---|---|---|
| NTPC Ltd | Council of Scientific and Industrial Research (CSIR) | 2 |
| NTPC Ltd | THE REGISTRAR ANNAMALAI UNIV | 2 |
| Easwari Engineering College | SRM INSTITUTE OF SCIENCE & TECHNOLOGY RAMAPURAM CA… | 1 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
United States Gypsum Co leads; JFE Steel is the sharpest new entrant by momentum
The leader holds a structurally dominant position in core binder chemistry, while the most notable momentum signal comes from a steelmaker leveraging industrial by-product expertise.
United States Gypsum Co
United States Gypsum Co holds 48 patent records — more than four times the second-ranked filer — concentrated entirely in C04B subclasses covering hydraulic binders (C04B 28), non-hydraulic binders (C04B 12), and performance-defining characteristics (C04B 111). The most-cited patents in the corpus, including freeze-thaw durable, self-consolidating, and dimensionally stable geopolymer compositions, are closely associated with this portfolio, making it the reference point for any freedom-to-operate analysis in core geopolymer durability chemistry. No momentum data in the evidence set indicates recent acceleration or deceleration for this applicant.
patent records: 48JFE Steel Corporation
JFE Steel Corporation holds 5 patent records and is flagged as a new entrant by momentum trend, meaning its recent filing activity represents a first substantive entry into the geopolymer durability space. Its technical focus spans C04B 28 (hydraulic binders), C04B 18 (slag and industrial by-products as starting materials), and C04B 24 (organic additives), a profile consistent with a steelmaker seeking to valorise blast-furnace slag as a geopolymer precursor. This entry path — by-product valorisation rather than synthetic binder chemistry — is technically distinct from United States Gypsum Co’s core claims and may offer a lower freedom-to-operate barrier.
patent records: 5| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| VEL TECH RANGARAJAN DR SAGUNTHALA R&D INST OF SCI … | 2 | ▲ new entrant |
| Easwari Engineering College | 2 | ▲ new entrant |
| JFE Steel Corporation | 5 | ▲ new entrant |
Roads, pavements, and structural components are under-served relative to core chemistry
Several IPC branches adjacent to the dominant C04B core carry low patent record counts, suggesting areas where applied durability research has not yet translated into substantial IP coverage.
E01C · Roads and pavements
With 18 patent records versus 283 in C04B, the roads and pavements branch is the largest adjacent cluster yet remains sparsely covered relative to the underlying formulation science. Geopolymer binders offer known freeze-thaw and sulfate resistance advantages relevant to pavement durability in harsh climates, but specific claims targeting pavement mix design, cure-in-place protocols, or long-term fatigue performance appear limited. Entrants with civil engineering capability and access to industrial by-products (fly ash, slag) could develop differentiated IP here without directly competing with United States Gypsum Co’s binder-chemistry claims.
Search this in Eureka →E04C · Structural building components
The structural building components branch (E04C) holds only 5 patent records, despite geopolymer composites being a plausible candidate for precast panels, fire-resistant facades, and structural elements requiring long-term chemical durability. The branch is adjacent to B32B (layered products, 4 records), suggesting that composite and laminate architectures incorporating geopolymer matrices are also under-covered. Organisations with precast or modular construction expertise could explore this branch as a lower-competition entry point, particularly where durability under combined mechanical and chemical loading is the performance target.
Search this in Eureka →How leading applicants differ by IPC sub-route
Route coverage across the main technology branches in the current evidence set.
| Player | C04B 28 · Ceramics, cement & refractories | C04B 111 · Ceramics, cement & refractories | C04B 18 · Ceramics, cement & refractories | C04B 12 · Ceramics, cement & refractories | C04B 14 · Ceramics, cement & refractories |
|---|---|---|---|---|---|
| United States Gypsum Co | Strong · 48 | Moderate · 22 | Emerging · 5 | Strong · 27 | Emerging · 3 |
| Catholic University of America | Strong · 11 | Absent | Strong · 11 | Absent | Strong · 11 |
| CEMALT LLC | Strong · 10 | Absent | Strong · 8 | Absent | Strong · 8 |
| Building Armour Industries LLC | Strong · 5 | Moderate · 2 | Strong · 4 | Strong · 5 | Strong · 5 |
| NTPC Ltd | Strong · 6 | Strong · 4 | Absent | Strong · 4 | Moderate · 2 |
| Easwari Engineering College | Strong · 6 | Moderate · 3 | Strong · 4 | Absent | Absent |
| Cement Australia Pty Ltd | Strong · 6 | Absent | Absent | Strong · 5 | Absent |
Frequently asked questions
United States Gypsum Co ranks first with 48 patent records, more than four times the count of the second-ranked filer, Catholic University of America, which holds 11 patent records. The gap between rank one and rank two is the largest tier-break in the applicant ranking.
India leads all jurisdictions with 109 patent records, driven largely by academic and governmental filers. The United States is second with 44 records, followed by China and WIPO (PCT) each at 27 records, and Europe (EPO) at 20 records.
The field is assessed as mature, with annual filings having plateaued near their 2019 peak. The multi-year trajectory shows activity sustained rather than sharply declining, but the early growth phase has passed. Recent-year counts (2024–2025) are subject to publication lag and should be treated as provisional.
C04B (Ceramics, cement and refractories) dominates with 283 patent records, overwhelmingly the largest class in the corpus. The nearest secondary branch, E01C (Roads and pavements), holds only 18 records, confirming that applied end-use branches remain comparatively sparse.
NTPC Ltd (a Government of India company) is the most active co-filer, with two co-filed records alongside the Council of Scientific and Industrial Research (CSIR) and two more with Annamalai University. Easwari Engineering College also co-filed with SRM Institute of Science and Technology on one record. Overall, the collaboration network is limited.
Three applicants are flagged as new entrants by momentum trend: Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology, Easwari Engineering College, and JFE Steel Corporation. JFE Steel’s 5 recent patent records and focus on slag-based precursors (C04B 18) make it the most industrially significant new entrant.
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