F25J 3/0406
Of nitrogen
Official title: {of nitrogen}
F25J3/0406 (Of nitrogen) appears on 59 US grants and 54 published applications in this corpus.
Search patents in F25J- Granted patents
- 59
- Published applications
- 54
- Assignees
- 25
- Inventors
- 120
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 2 |
| 2003 | 2 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 1 | 2 |
| 2007 | 1 | 3 |
| 2008 | 1 | 3 |
| 2009 | 1 | 1 |
| 2010 | 1 | 0 |
| 2011 | 1 | 2 |
| 2012 | 0 | 2 |
| 2013 | 0 | 2 |
| 2014 | 0 | 2 |
| 2015 | 3 | 2 |
| 2016 | 1 | 4 |
| 2017 | 2 | 3 |
| 2018 | 2 | 3 |
| 2019 | 3 | 6 |
| 2020 | 2 | 3 |
| 2021 | 2 | 4 |
| 2022 | 0 | 3 |
| 2023 | 2 | 2 |
| 2024 | 3 | 0 |
| 2025 | 1 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Power generation process utilizing fuel, liquid air and/or oxygen with zero CO2 emissions28 Apr 2026US 12,613,064 B2Saipem S.P.A.
- Method to convert excess liquid oxygen into liquid nitrogen20 May 2025US 12,305,916 B2Airgas, Inc.
- Apparatus and method for separation of air by cryogenic distillation31 Dec 2024US 12,181,217 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Method and apparatus for air separation by cryogenic distillation2 Jul 2024US 12,025,372 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- System and method for recovery of nitrogen, argon, and oxygen in moderate pressure cryogenic air separation unit19 Mar 2024US 11,933,538 B2Praxair Technology, Inc.
- Process and apparatus for intermittent liquefaction operation that can support continuous air separation processing6 Aug 2026US 2026/0227123 A1Air Products and Chemicals, Inc.
- Method for cryogenic separation of air, and air separation plant16 Jul 2026US 2026/0202125 A1Linde Aktiengesellschaft
- Method for the cryogenic separation of air, and air separation plant13 Feb 2025US 2025/0052493 A1
- Power generation process utilizing fuel, liquid air and/or oxygen with zero co2 emissions28 Dec 2023US 2023/0417482 A1Saipem S.P.A.
- Lighter than air transportation system using cryogenic energy storage6 Jul 2023US 2023/0213279 A1Anumá Aerospace, LLC
Most cited
By later US patents
- Combined power cycle with liquefied natural gas (LNG) and synthesis or fuel gas140US 5,295,350 ATexaco Inc. · 1994
- Combined power cycle with liquefied natural gas (LNG) and synthesis or fuel gas75US 5,394,686 ATexaco Inc. · 1995
- Liquefied natural gas refrigeration transfer to a cryogenics air separation unit using high presure nitrogen stream67US 5,137,558 AAir Products and Chemicals, Inc. · 1992
- Incorporated cascade cooling cycle for liquefying a gas by regasifying liquefied natural gas48US 4,054,433 AL Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude · 1977
- Production of liquid nitrogen using liquefied natural gas as sole refrigerant48US 5,139,547 AAir Products and Chemicals, Inc. · 1992