C02F 2209/30
H2
C02F2209/30 (H2) appears on 20 US grants and 42 published applications in this corpus.
Search patents in C02F- Granted patents
- 20
- Published applications
- 42
- Assignees
- 32
- Inventors
- 94
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 2 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 2 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 2 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 4 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 3 | 3 |
| 2021 | 1 | 7 |
| 2022 | 5 | 1 |
| 2023 | 2 | 3 |
| 2024 | 0 | 5 |
| 2025 | 3 | 6 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Pulsed power supply for sustainable redox agent supply for hydrogen abatement during electrochemical hypochlorite generation12 May 2026US 12,623,931 B2Evoqua Water Technologies LLC
- Continuous flow reactor for conversion of wastewater to biohydrogen using activated sludge and microalgae29 Jul 2025US 12,371,714 B2United Arab Emirates University
- Pet hydration system24 Jun 2025US 12,336,516 B2Green Life Co., Ltd.
- Systems and methods for managing filtration media beds in gas and liquid filtration apparatus27 May 2025US 12,312,548 B2Pure Air Filtration, LLC
- Pulsed power supply for sustainable redox agent supply for hydrogen abatement during electrochemical hypochlorite generation31 Oct 2023US 11,802,063 B2Evoqua Water Technologies LLC
- Pure water production device2 Apr 2026US 2026/0091987 A1Kurita Water Industries Ltd.
- Ultrapure water production apparatus and ultrapure water production method15 Jan 2026US 2026/0015263 A1Organo Corporation
- Green hydrogen from seawater6 Nov 2025US 2025/0341001 A1The Regents of the University of California
- Device for dispensing active ingredients or conveyable substances in a targeted, controllable, and regulatable manner using a gas generating cell25 Sep 2025US 2025/0297705 A1Simatec AG
- Systems and methods for managing filtration media beds in gas and liquid filtration apparatus21 Aug 2025US 2025/0263616 A1
Most cited
By later US patents
- Pet hydration system13US 11,291,183 B1Green Life Co., Ltd. · 2022
- Apparatus and process for mediated electrochemical oxidation of materials7US 8,414,748 B2Scimist, Inc. · 2013
- Process for the regulation of a device for the removal of pollutants from waste water4US 5,248,423 ACentre National De La Recherche Scientifique · 1993
- Method and arrangement for dewatering sludge2US 10,865,131 B2Elajo Technology Solutions AB · 2020
- Method for activating and stabilizing dissolved hydrogen in water2US 8,562,860 B2Spring Co., Ltd. · 2013