Stirred-Tank Bioreactor Gas Transfer Patents: Who Leads and Where the Claim Space Is Open
One assignee at 34 records sits well clear of a field where fifth place holds 8 and tenth place holds just 5 — a steep drop after the leader. Recorded filings ran from 6 in 2017 to a peak of 7 in 2020, with 2026 showing 0 as a partial year. Because publication typically lags filing by around 18 months, the most recent two to three years understate real filing activity and should not be read as a decline.
- 1PLURI BIOTECH LTD34
- 2LIFE TECHNOLOGIES CORP17
- 3TAKEDA PHARMA CO LTD16
- 4MASSACHUSETTS INST OF TECH12
- 5FINESSE SOLUTIONS INC8
See the full stirred-tank bioreactor gas transfer 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
Frequently asked questions
Who holds the most patents on stirred-tank bioreactor gas transfer?
In this dataset of 107 published records, one assignee leads clearly with 34 records, well ahead of the fifth-ranked assignee at 8 and the tenth-ranked at 5. The ranking covers 53 assignees in total, so most companies in the field hold only a handful of records each. This concentration at the top suggests one organisation has built gas-transfer engineering into a core, sustained patent programme rather than filing opportunistically.
What IPC classes should I search alongside C12M for this technology?
B01F, covering mixing and stirring apparatus, appears in 26.2% of the 107 records and is the most common secondary class, followed by C12N microorganism and genetic-engineering claims at 20.6%. A61K medicinal preparations, B01L lab apparatus, G01N testing and C12Q enzyme/DNA measurement all appear in smaller but non-trivial shares. Searching across these classes together, rather than C12M alone, catches filings where gas-transfer claims are embedded inside a mixing mechanism or a downstream biological process.
Has patent filing for stirred-tank bioreactor gas transfer peaked?
The highest recorded year so far is 2020, with 7 filings, and counts in 2025 and 2026 appear lower. That drop should be read cautiously: publication typically lags filing by around 18 months, so the last one to two years in any patent dataset are understated by definition. A genuine slowdown can't be confirmed until later filing years finish publishing.
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 Stirred-Tank Bioreactor Gas Transfer 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.