C25B 1/044
Producing mixed hydrogen and oxygen gas
Official title: producing mixed hydrogen and oxygen gas, e.g. Brown's gas [HHO]
C25B1/044 (Producing mixed hydrogen and oxygen gas) appears on 103 US grants and 168 published applications in this corpus.
Search patents in C25B- Granted patents
- 103
- Published applications
- 168
- Assignees
- 85
- Inventors
- 282
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 2 |
| 2004 | 2 | 3 |
| 2005 | 0 | 2 |
| 2006 | 1 | 1 |
| 2007 | 1 | 6 |
| 2008 | 2 | 0 |
| 2009 | 0 | 5 |
| 2010 | 0 | 8 |
| 2011 | 0 | 3 |
| 2012 | 3 | 7 |
| 2013 | 2 | 3 |
| 2014 | 3 | 1 |
| 2015 | 3 | 8 |
| 2016 | 4 | 8 |
| 2017 | 2 | 8 |
| 2018 | 4 | 7 |
| 2019 | 6 | 12 |
| 2020 | 8 | 7 |
| 2021 | 6 | 6 |
| 2022 | 5 | 11 |
| 2023 | 5 | 14 |
| 2024 | 14 | 23 |
| 2025 | 7 | 9 |
| 2026 | 5 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hydrogen-oxygen mixture gas producing and supplying device14 Jul 2026US 12,680,175 B2H2Tube Co., Ltd.
- Compact portable oxyhydrogen generator23 Jun 2026US 12,662,742 B2Dalian Institute of Chemical Physics, Chinese Academy of Sciences
- Hydrogen generation device for optimising combustion and reducing the emission of pollutants in diesel cycle engines and method of use28 Apr 2026US 12,612,886 B2
- Integrated power production and storage systems13 Jan 2026US 12,522,933 B2Mitsubishi Power Americas, Inc.
- Methods to reduce combustion time and temperature in an engine6 Jan 2026US 12,516,640 B2
- Gas generator for a tool, usage of the gas generator and a tool with a gas generator8 Oct 2026US 2026/0308772 A1Hilti Aktiengesellschaft
- Scalable automated oxyhydrogen-production, storage, and utilization system8 Oct 2026US 2026/0308773 A1Enertopia Corp.
- Method and plant for producing hydrogen1 Oct 2026US 2026/0297763 A1
- Redox mediated gas evolution17 Sep 2026US 2026/0275536 A1Schlumberger Technology Corporation
- Hydrogen-powered autonomous mobile vehicle and operating method of the same10 Sep 2026US 2026/0265926 A1Industrial Technology Research Institute
Most cited
By later US patents
- Electrolytic gas producer method and apparatus75US 5,711,865 ARenjean Pty Ltd · 1998
- Welding67US 4,014,777 A1977
- Air pump-assisted hydrogen/oxygen fuel cell for use with internal combustion engine52US 5,458,095 AEnergy Reductions Systems, Inc. · 1995
- Hydrogen-oxygen generator38US 4,369,737 A1983
- Apparatus for gas generation37US 5,082,544 ACommand International, Inc. · 1992