C01B 2210/0046
Nitrogen
C01B2210/0046 (Nitrogen) appears on 578 US grants and 386 published applications in this corpus.
Search patents in C01B- Granted patents
- 578
- Published applications
- 386
- Assignees
- 276
- Inventors
- 1,215
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 1 | 0 |
| 1984 | 5 | 0 |
| 1985 | 2 | 0 |
| 1986 | 5 | 0 |
| 1987 | 7 | 0 |
| 1988 | 9 | 0 |
| 1989 | 7 | 0 |
| 1990 | 9 | 0 |
| 1991 | 10 | 0 |
| 1992 | 17 | 0 |
| 1993 | 11 | 0 |
| 1994 | 8 | 0 |
| 1995 | 15 | 0 |
| 1996 | 23 | 0 |
| 1997 | 18 | 0 |
| 1998 | 22 | 0 |
| 1999 | 32 | 0 |
| 2000 | 30 | 0 |
| 2001 | 23 | 7 |
| 2002 | 27 | 26 |
| 2003 | 29 | 19 |
| 2004 | 17 | 22 |
| 2005 | 9 | 32 |
| 2006 | 15 | 28 |
| 2007 | 19 | 31 |
| 2008 | 24 | 27 |
| 2009 | 14 | 40 |
| 2010 | 20 | 30 |
| 2011 | 20 | 24 |
| 2012 | 21 | 19 |
| 2013 | 19 | 13 |
| 2014 | 20 | 5 |
| 2015 | 6 | 3 |
| 2016 | 8 | 7 |
| 2017 | 6 | 4 |
| 2018 | 2 | 9 |
| 2019 | 4 | 5 |
| 2020 | 5 | 4 |
| 2021 | 5 | 5 |
| 2022 | 2 | 7 |
| 2023 | 2 | 5 |
| 2024 | 4 | 7 |
| 2025 | 3 | 5 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process and apparatus to recover helium23 Jun 2026US 12,662,379 B2The University of Western Australia
- Household oxygen generator19 May 2026US 12,629,628 B2Shenzhen Harveymed Technology Co., LTD.
- Hydrogen purification by adsorption10 Mar 2026US 12,570,528 B2Air Products and Chemicals, Inc.
- Method for separating gases in an oxy-fuel combustion process by using oxygen-permeable membranes23 Dec 2025US 12,502,639 B2Kerionics, S.L.
- Gas purification method and device13 May 2025US 12,297,107 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Household oxygen generator12 Feb 2026US 2026/0042051 A1Shenzhen Harveymed Technology Co., LTD.
- System and method for production of ultra-high purity oxygen5 Feb 2026US 2026/0035243 A1
- Systems and methods for production of low carbon intensity hydrogen from geologic sources27 Nov 2025US 2025/0361144 A1Koloma, Inc.
- Process to purify helium from methane with integrated nitrogen rejection using membrane technology4 Sep 2025US 2025/0276275 A1Air Liquide Advanced Technologies U.S. LLC
- Method and apparatus for separating a component mixture26 Jun 2025US 2025/0206607 A1Linde Aktiengesellschaft
Most cited
By later US patents
- Methanol plant retrofit for acetic acid manufacture208US 6,232,352 B1Acetex limited · 2001
- High temperature fuel cell power plant165US 7,097,925 B2QuestAir Technologies Inc. · 2006
- Synthesis gas production by mixed conducting membranes with integrated conversion into liquid products162US 6,114,400 AAir Products and Chemicals, Inc. · 2000
- Portable oxygen concentrator151US 6,520,176 B1L 'Air Liquide-Societe 'Anonyme a 'Directoire et Conseil de Surveillance pour l 'Etude et L'Exploitation des Procedes Georges Claude · 2003
- Process for separating components of a gas stream137US 4,701,187 AAir Products and Chemicals, Inc. · 1987