B01D 2259/40071
Nine
B01D2259/40071 (Nine) appears on 61 US grants and 28 published applications in this corpus.
Search patents in B01D- Granted patents
- 61
- Published applications
- 28
- Assignees
- 27
- Inventors
- 120
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 4 |
| 2006 | 0 | 1 |
| 2007 | 2 | 1 |
| 2008 | 2 | 2 |
| 2009 | 0 | 3 |
| 2010 | 2 | 2 |
| 2011 | 1 | 1 |
| 2012 | 2 | 1 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 1 |
| 2016 | 1 | 1 |
| 2017 | 1 | 0 |
| 2018 | 2 | 1 |
| 2019 | 0 | 2 |
| 2020 | 2 | 3 |
| 2021 | 2 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 1 |
| 2025 | 2 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Pressure swing adsorption apparatus for high purity hydrogen purification from ammonia decomposition and hydrogen purification method using the same4 Aug 2026US 12,697,581 B2Korea Institute of Energy Research
- Pressure swing adsorption apparatus for hydrogen purification from decomposed ammonia gas and hydrogen purification method using the same30 Dec 2025US 12,508,535 B2Korea Institute of Energy Research
- Method for regulating a unit for separating a gas stream15 Jul 2025US 12,357,939 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Pressure swing adsorption type hydrogen manufacturing apparatus28 Jun 2022US 11,369,915 B2Osaka Gas Co., Ltd.
- Removal of water vapor from streams containing carbon dioxide and/or carbon monoxide18 May 2021US 11,007,473 B2University of South Carolina
- Pressure swing adsorption apparatus for high purity hydrogen purification from ammonia decomposition and hydrogen purification method using the same2 Jan 2025US 2025/0001352 A1Korea Institute of Energy Research
- Pressure swing adsorption apparatus for hydrogen purification from decomposed ammonia gas and hydrogen purification method using the same28 Mar 2024US 2024/0100469 A1Korea Institute of Energy Research
- Method for regulating a unit for separating a gas stream25 May 2023US 2023/0158444 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Porous materials for natural gas liquids separations11 Jun 2020US 2020/0179865 A1Apache Corporation
- Pressure Swing Adsorption Type Hydrogen Manufacturing Apparatus23 Apr 2020US 2020/0122080 A1Osaka Gas Co., Ltd.
Most cited
By later US patents
- Separation of gas mixtures including hydrogen88US 5,234,472 AThe BOC Group, Inc. · 1993
- Pressure swing system with auxiliary adsorbent bed68US 5,906,673 ANitrotec Corporation · 1999
- Recovery of hydrogen and nitrogen from ammonia plant purge gas55US 4,077,780 AUnion Carbide Corporation · 1978
- Reformer-pressure swing adsorption process for the production of carbon monoxide52US 4,726,816 AUnion Carbide Corporation · 1988
- Adsorption process for recovering two high purity gas products from multicomponent gas mixtures51US 4,913,709 A1990