Electronic Specialty Gas Purification Patents: Who Holds the Getter and Filtration Claims
48.7% of all 643 records sit with the top five assignees, so most freedom-to-operate questions in this field come down to a small set of portfolios. Filings peaked at 24 in 2017 and had fallen to 8 by 2021, then continued down to 3 by 2024 — a 63% decline over that three-year span, the last window the dataset can treat as complete. Years after 2024 are still filling in under publication lag and should not be read as a continued slide.
- 1ENTEGRIS INC94
- 2SOITEC SA70
- 3SAES PURE GAS INC69
- 4SAES GETTERS SPA59
- 5GALLIUM ENTERPRISES21
See the full electronic specialty gas purification analysis in Eureka
- The complete ranking, not just the top five
- Every IPC branch with its share of the corpus
- The most-cited records, and where claim space is still thin
Common questions on this landscape
Who holds the most patents in electronic specialty gas purification?
One assignee leads the ranked field with 94 of the 643 records in scope, well ahead of the fifth-place holder at 21. The top five assignees combined account for 48.7% of all records, and the top ten combined reach 61.0%, so competitive mapping in this space should focus first on that small leading group rather than the full 100-company ranking. Family-level counts, which this ranking uses, are the fairer comparison because they neutralise continuation filings and multi-jurisdiction duplicates.
Is patent filing in this field growing or shrinking?
Filings peaked in 2017 at 24 per year and have declined since; the last span the data can treat as complete shows a fall from 8 filings in 2021 to 3 in 2024, a 63% drop. Years from 2025 onward show near-zero filings, but that reflects an approximately 18-month publication lag rather than an actual halt in activity. Treat the 2021-2024 window as the reliable signal and wait for later years to fill in before drawing conclusions about 2025-2026.
What technology areas dominate the patent claims?
Separation processes under IPC class B01D cover 49.8% of the 643 records, making filtration and moisture-removal hardware the single densest claim area. Catalysis and chemical/physical processes (B01J) follow at 19.3%, and inorganic compound chemistry (C01B) at 16.3%. Analytical and testing methods under G01N, used to verify purity at parts-per-billion levels, are comparatively thin at 10.0%, suggesting more open claim space on the detection side than on the separation-hardware side.
Disclaimer. This analysis is based on Patsnap Eureka data drawn from a limited snapshot of global patent records and is provided for general information and reference only. Patent data carries inherent limitations — recent filings are under-counted because of publication lag, counts may be on a record or family basis, classification and applicant-name data may contain errors or duplicates, and the underlying search query defines the scope shown — so the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing here is an exhaustive prior-art, novelty, freedom-to-operate or validity search, nor does it constitute legal, financial or professional advice, and it should not be relied upon as such. Verify independently and review with qualified patent and legal professionals before acting on it.
Method: Filing trend and technology composition. Derived from a Patsnap search on Electronic Specialty Gas Purification covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish. Every share divides by all records in scope. Data: Patsnap Eureka. See the full landscape report.