Where it is examined
Topic
Gas separation membrane Steady
209 applications whose title mentions it. Its share of new filings over the last two years is 41% above the four years before.
Allowance rate
74%
−2 pts vs the USPTO 185 decided
Months to first action
19.3 mo
+0.7 vs the USPTO
Applications
209.0
in the record
Allowed
136.0
49 abandoned
Filings by year
How often the topic was filed
The most recent years are still filling in.
Examiners
Who examines it, and how it fares with each
Bars show the share of decided applications that were allowed.
Who files it
Companies and institutions
Bars show the share of decided applications that were allowed.
Who represents them
Law firms and agents
Bars show the share of decided applications that were allowed.
Applications
Recent applications on this topic
| Application | Title | Filed | Status | Rejections | RCEs | To 1st action |
|---|---|---|---|---|---|---|
| 19881712 | METHODS OF SYNTHESIZING POLYIMIDE MEMBRANES FOR MEMBRANE-BASED GAS SEPARATION AND R… | 2026-10-02 | Pending | 0 | 0 | n/a |
| 19589278 | ASYMMETRIC HOLLOW-FIBER MEMBRANE FOR GAS SEPARATION MADE OF COPOLYMERS WITH POLYAMI… | 2026-05-20 | Pending | 0 | 0 | n/a |
| 19583360 | MODIFIED POLYMER GAS SEPARATION MEMBRANE | 2026-04-29 | Pending | 0 | 0 | n/a |
| 15569031 | Method and apparatus for adaptive signal processing | 2012-01-10 | Allowed | 1 | 0 | 12.0 mo |
| 15851616 | Composition and method for controlled release | 2015-02-11 | Abandoned | 4 | 1 | 23.0 mo |
| 15199439 | Distributed ledger transaction verification | 2018-03-12 | Allowed | 3 | 0 | 20.0 mo |
| 15607268 | Thermal management of battery assemblies | 2021-04-13 | Pending | 2 | 1 | 17.0 mo |
| 15249564 | Machine learning model for anomaly detection | 2012-05-14 | Allowed | 1 | 0 | 14.0 mo |
| 15622202 | Wireless power transfer coil arrangement | 2015-06-15 | Abandoned | 4 | 1 | 25.0 mo |
| 15943047 | Catalyst for selective hydrogenation | 2018-07-16 | Allowed | 3 | 0 | 22.0 mo |