C01B 2203/1638
Adjusting the pressure
C01B2203/1638 (Adjusting the pressure) appears on 42 US grants and 44 published applications in this corpus.
Search patents in C01B- Granted patents
- 42
- Published applications
- 44
- Assignees
- 42
- Inventors
- 150
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 2 |
| 2002 | 3 | 3 |
| 2003 | 2 | 2 |
| 2004 | 3 | 0 |
| 2005 | 0 | 2 |
| 2006 | 1 | 0 |
| 2007 | 2 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 0 |
| 2011 | 1 | 2 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 2 |
| 2017 | 1 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 3 | 3 |
| 2022 | 1 | 4 |
| 2023 | 5 | 4 |
| 2024 | 5 | 4 |
| 2025 | 2 | 8 |
| 2026 | 1 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Steam reforming30 Jun 2026US 12,668,488 B2Johnson Matthey Davy Technologies Limited
- Methods and apparatuses for hydrogen production15 Jul 2025US 12,358,793 B28 Rivers Capital, LLC
- Apparatuses and methods for hydrogen production15 Jul 2025US 12,358,794 B28 Rivers Capital, LLC
- Methods of producing hydrogen and nitrogen using a feedstock gas reactor3 Dec 2024US 12,157,669 B2Ekona Power Inc.
- Methods and apparatuses for hydrogen production19 Nov 2024US 12,145,847 B28 Rivers Capital, LLC
- Dehumidification apparatus, hydrogen production equipment, and method for operating dehumidification apparatus1 Oct 2026US 2026/0295515 A1Mitsubishi Heavy Industries, Ltd.
- Carbon dioxide reaction device1 Oct 2026US 2026/0296896 A1Yueqing Wanyin Aquarium Equipment Co., Ltd
- Hydrogen plant30 Jul 2026US 2026/0217529 A1Kawasaki Jukogyo Kabushiki Kaisha
- Dehydrogenation reaction system and control method thereof18 Jun 2026US 2026/0167488 A1Hyundai Motor Company
- Apparatus and method for producing graphene and hydrogen8 Jan 2026US 2026/0008673 A1Levidian Nanosystems Limited
Most cited
By later US patents
- Integrated hydrocarbon reforming system and controls150US 6,641,625 B1Nuvera Fuel Cells, LLC · 2003
- Combined reformer and shift reactor121US 5,458,857 AROLLS-ROYCE plc · 1995
- In situ hydrogenation of hydrocarbons in underground formations100US 3,982,592 AWorld Energy Systems Incorporated · 1976
- Hydrogen generating system57US 4,024,912 A1977
- Hydrogen manufacturing and supplying apparatus and electric motorcar52US 6,294,276 B1Toyota Jidosha Kabushiki Kaisha · 2001