Electronic Chemicals Patents: Top Companies & Filing Trends 2026
- 48.5% concentration. The top five assignees combined account for 48.5% of all 101 records in scope, with a leader out front at 19 records and a long tail of single-filing entrants behind.
- Filing has cooled from its 2020 peak. Filings hit 8 in 2020 and moved 6 in 2021 to 5 in 2024, a -17% shift over that span, though 2025-2026 figures are still filling in under the usual publication lag.
- Catalysis dominates the class mix. B01J chemical/physical processes and catalysis appears in 31.7% of records, more than three times the share of any other single IPC subclass tracked here.
Filing growth compares 2021 (6 records) with 2024 (5) — a three-year span. 2024 is the most recent year we treat as complete: publication lags filing by roughly 18 months, so 2025 onwards are still filling in and any growth rate that ends there would understate the field. Top-5 share is the combined record count of the five largest assignees divided by all 101 records in scope (CR5), not by the ranked leaders only.
What the electronic chemicals patent record actually shows
Electronic chemicals sit at the intersection of process chemistry and device fabrication: reaction-medium control, process-stream purification and mass-transfer engineering that determine yield and selectivity in high-purity feedstock production. The dataset behind this page spans 101 published records filed or published between 2015 and the 2026 cut-off, tied to search terms covering reaction medium, process stream, mass transfer, product selectivity, process yield and chemical feedstock alongside the electronic chemicals label itself.
Patent families, not raw document counts, are the fairer unit for judging real activity here, since families neutralise the effect of continuations and multi-jurisdiction refiling. The concentration and technology-mix figures on this page are read against that family-level total of 101, and every share quoted names its denominator so it can be checked against the source data.
Filing trend and technology composition
Two views of the same 101-record dataset: how filing activity has moved year over year, and how those records split across IPC subclasses. Both are read against the full record count, not against the ranked assignee list.
Filing trend, 2017-2026
Filings ran from 2 in 2017 to a peak of 8 in 2020, then eased to 6 in 2021 and 5 in 2024, a -17% move over that three-year window. 2025 and 2026 are shown but understated, since publication typically lags filing by around 18 months, so the true trajectory of the most recent two years will only firm up as later filings publish.
IPC subclass composition
B01J (chemical/physical processes and catalysis) leads at 31.7% of the 101 records in scope, followed by G03F (photolithography and photomechanics) at 10.9%, and a cluster of B01D separation processes, C01B inorganic compounds and H01L semiconductor devices each at 9.9%. A01N biocides, B22F powder metallurgy and H10W round out the mix at 8.9% and 6.9%. Records can carry more than one class, so these shares sum past 100%.
Shares are the percentage of the 101 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Electronic Chemicals Patent Landscape with Eureka
This page is one run against one query. Ask Eureka your own question about electronic chemicals patent landscape and every answer comes back with the patent numbers behind it.
Try EurekaRepresentative filing and most-cited prior art
Production system, production method and application of general-purpose high-purity chemicals (US20240042343A1)
A production system, production method and application of general-purpose high-purity chemicals are disclosed. The production system includes a raw material tank, and an adsorption system, a crystallizer, a first light-impurity removal tower, a first heavy-impurity removal tower, a second light-impurity removal tower, a motorized tower, a second heavy-impurity removal tower, a vapor permeation device, a membrane separation system and a filling system connected with the raw material tank in sequence. The high-purity chemicals produced by the above system have high purity and excellent quality.Filed by Beijing University of Chemical Technology, published 2024-02-08.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US5008213A | Hybrid wafer scale microcircuit integration | 97 |
| 2 | US7112513B2 | Sub-micron space liner and densification process | 87 |
| 3 | US4989063A | Hybrid wafer scale microcircuit integration | 76 |
| 4 | US20050186755A1 | Sub-micron space liner and densification process | 54 |
| 5 | US20100272770A1 | Silver nanoparticles with specific surface area and a method for producing them | 36 |
| 6 | WO1993006235A1 | Process for the preparation of enantiomerically pure 4-hydroxytetrahydro-2-pyranone derivatives | 25 |
| 7 | US20060099531A1 | Derivatized polyhydroxystyrenes (DPHS) with a novolak type structure and blocked DPHS (BDPHS) and processes f… | 17 |
| 8 | US20130095428A1 | Radiation-sensitive resin composition | 16 |
| 9 | US20190115233A1 | Method and system for mass arrangement of micro-component devices | 15 |
| 10 | JP1988500923A | Olefin oxidation catalyst system | 15 |
Citation counts favour older filings simply because they have had longer to accumulate citations inside the searched corpus; read them as a signal of influence on the field's prior art, not as a ranking of current commercial relevance.
Each row carries its publication number; clicking a row searches Eureka by that number.
Put your own technology through the same analysis
Eureka on the web
When you want the answer in the next five minutes.
The agent works the prompt against patents and technical literature, citing every source.
Run your analysis now →MCP server & REST API
When it has to run inside your own pipeline.
Patent search, landscape analysis and assignee resolution as MCP tools. Drop them into any agent framework, or call REST directly.
Browse MCP servers →What the concentration and citation data mean for filing decisions
The numbers point to a field with a distinct top tier, dense claim coverage in catalysis-adjacent processes, and older foundational patents that still shape freedom-to-operate analysis today.
A defined leading group, not a monopoly
The top five assignees combined hold 48.5% of all 101 records in scope, with the leader alone at 19 records. The top ten extends that to 70.3%, meaning the remaining roughly three dozen ranked companies split under a third of the field between them.
Catalysis and process chemistry dominate the claim space
B01J covers nearly a third of the 101 records, well ahead of photolithography, separation processes, inorganic compounds and semiconductor devices, each in the 9-11% range. That density means process-yield and selectivity claims in catalytic routes face the most crowded prior art.
Foundational wafer-scale and space-liner patents still anchor prior art
The most-cited records in the dataset trace back to hybrid wafer-scale microcircuit integration and sub-micron space liner densification work, cited 97 and 87 times respectively. Their age means they measure long-run influence on the field rather than current commercial weight.
Activity has eased from its 2020 peak
Filings peaked at 8 in 2020 and moved from 6 in 2021 to 5 in 2024, a -17% change over that span. 2025-2026 figures will rise as later filings publish, given the roughly 18-month lag between filing and publication, so this should not yet be read as a continuing decline.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to electronic chemicals patent landscape, with the prior art for and against each one.
Who is filing, and where the gaps sit
A small set of assignees carries close to half the dataset, but co-assignee activity and the technology mix point to specific sub-areas that remain open for a first claim.
One assignee sets the pace
The leading assignee holds 19 of the 101 records in scope, well ahead of the fifth-place holder at 6 and the tenth-place holder at 3. That gap suggests a company with a sustained, multi-year filing programme rather than a single burst of activity.
A long tail behind the leading group
Beyond the top ten, which together hold 70.3% of records, the remaining assignees in the 49-company ranking each contribute small numbers of filings. This is typical of a field with an active core of specialists and a wider set of occasional filers.
Co-filing is concentrated among a few inventor teams
Ten co-assignee pairings appear in the data, with the strongest recurring combination linked to the same lead inventor across three separate pairings, each recorded four times. That pattern points to a tight, identifiable research group rather than broad industry-wide collaboration.
| Assignee | Recent year | YoY |
|---|---|---|
| IonX Solutions LLC | 0 | — |
| JSR Corporation | 0 | — |
| Janssen Pharmaceutica NV | 0 | — |
| Micron Technology Inc | 0 | — |
| Rohm and Haas Company | 0 | — |
| The University Court of the University of Glasgow | 0 | — |
| Merck & Co., Inc. | 0 | — |
| Massachusetts Institute of Technology | 0 | — |
Where to take this analysis
The figures above establish where the field stands; the next step is usually a narrower freedom-to-operate check or a monitoring watch on the leading filers.
Run a freedom-to-operate check on B01J claims
With 31.7% of records classed under catalysis and process chemistry, any new process-yield or selectivity claim in this space is likely to sit near existing prior art. A targeted clearance search against the leading assignees' portfolios is the practical next step.
Explore B01J filings in EurekaTrack the leading assignee's filing cadence
A single assignee holding 19 of 101 records signals a sustained programme worth monitoring for continuation filings and new priority applications, particularly as 2025-2026 data continues to populate.
Set up assignee monitoring in EurekaProbe the under-claimed branches directly
Vapor permeation integration and powder-metallurgy precursor routes show thinner coverage than the core clusters. Before investing in R&D there, confirm the white space holds up against full-text claims, not just IPC-level counts.
Search white space in EurekaCommon questions about the electronic chemicals patent landscape
The dataset ranks 49 assignees by patent family count, with the leader holding 19 of the 101 records in scope. The top five combined hold 48.5% of all records, and the top ten extend that to 70.3%, so the field has a clear leading group even though it is not dominated by a single company. Beyond the top ten, filing activity spreads thinly across a long tail of companies and research institutions, several with only one or two records each.
Filings peaked at 8 in 2020 and eased to 6 in 2021, then to 5 in 2024, a -17% change over that three-year span. That is the most recent period that can be read as a complete trend, because publication typically lags filing by roughly 18 months, meaning 2025 and 2026 figures are still filling in and should not be treated as evidence of a continued decline. A fuller picture of the most recent two years will only emerge as later filings publish.
B01J, covering chemical and physical processes and catalysis, leads with 31.7% of the 101 records in scope, more than three times the share of most other classes tracked. Photolithography and photomechanics (G03F) follows at 10.9%, with separation processes, inorganic compounds and semiconductor devices each near 9.9%. Because a single record can carry multiple IPC classes, these shares add up to more than 100% of the total, so they should be read as overlapping coverage rather than a strict breakdown.
Relative to the dense B01J catalysis cluster, sub-areas such as vapor permeation membrane integration, high-purity feedstock crystallization trains and powder-metallurgy precursor routes under B22F show comparatively thin coverage in this dataset. That thinner coverage is a starting signal, not a guarantee of open claim space; a full-text clearance search against the leading assignees is the necessary next step before committing R&D spend to any of these branches.
Ownership is moderately concentrated: the top five assignees hold 48.5% of the 101 records in scope, and the top ten hold 70.3%. That leaves under a third of the field split among the remaining companies in the 49-company ranked list, many with just a handful of filings. This pattern, a defined leading group plus a long tail, is typical of a specialist process-chemistry field rather than a market with a single dominant patent holder.
Research Electronic Chemicals Patent Landscape in depth with Eureka
Go past this page: query the whole electronic chemicals patent landscape corpus yourself, in your own scope.
Every answer comes back with patent numbers you can open.
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.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.
Machine translation. Assignee and organisation names originally recorded in Chinese, Japanese or Korean have been rendered into English by an AI translation step so that the tables stay readable. These renderings are best-effort and may not match a company’s registered English name; the original name is what the underlying patent record carries, and it is what any Eureka query launched from this page uses.