F25J 2250/40
One fluid being air
F25J2250/40 (One fluid being air) appears on 147 US grants and 50 published applications in this corpus.
Search patents in F25J- Granted patents
- 147
- Published applications
- 50
- Assignees
- 31
- Inventors
- 171
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 8 | 0 |
| 1988 | 8 | 0 |
| 1989 | 8 | 0 |
| 1990 | 5 | 0 |
| 1991 | 3 | 0 |
| 1992 | 8 | 0 |
| 1993 | 8 | 0 |
| 1994 | 9 | 0 |
| 1995 | 9 | 0 |
| 1996 | 4 | 0 |
| 1997 | 7 | 0 |
| 1998 | 7 | 0 |
| 1999 | 4 | 0 |
| 2000 | 9 | 0 |
| 2001 | 9 | 2 |
| 2002 | 4 | 2 |
| 2003 | 4 | 2 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 2 |
| 2009 | 0 | 3 |
| 2010 | 0 | 1 |
| 2011 | 1 | 6 |
| 2012 | 2 | 5 |
| 2013 | 0 | 2 |
| 2014 | 2 | 4 |
| 2015 | 2 | 1 |
| 2016 | 2 | 4 |
| 2017 | 4 | 1 |
| 2018 | 2 | 0 |
| 2019 | 2 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
| 2022 | 0 | 5 |
| 2023 | 1 | 3 |
| 2024 | 2 | 1 |
| 2025 | 1 | 0 |
| 2026 | 2 | 1 |
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 emissions25 Aug 2026US 12,716,650 B2Saipem S.P.A.
- Power generation process utilizing fuel, liquid air and/or oxygen with zero CO2 emissions28 Apr 2026US 12,613,064 B2Saipem S.P.A.
- System for purifying argon by cryogenic distillation23 Dec 2025US 12,503,365 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Method for obtaining one or more air products and air separation system3 Dec 2024US 12,158,303 B2Linde Aktiengesellschaft
- Air separation device and air separation method22 Oct 2024US 12,123,647 B2Taiyo Nippon Sanso Corporation
- Process and apparatus for intermittent liquefaction operation that can support continuous air separation processing6 Aug 2026US 2026/0227123 A1Air Products and Chemicals, Inc.
- Process and Apparatus for Xenon and or Krypton Recovery14 Nov 2024US 2024/0375958 A1Air Products and Chemicals, Inc.
- Power generation process utilizing fuel, liquid air and/or oxygen with zero co2 emissions28 Dec 2023US 2023/0417482 A1Saipem S.P.A.
- Power generation process utilizing fuel, liquid air and/or oxygen with zero co2 emissions21 Dec 2023US 2023/0408192 A1Saipem S.P.A.
- Low-pressure nitrogen turbine with air booster parallel to the booster air compressor6 Apr 2023US 2023/0103843 A1L' Air Liquide, Societe Anonyme pour I' Etude et I'Exploitation des Procedes Georges Claude
Most cited
By later US patents
- Zero emissions closed rankine cycle power system124US 7,882,692 B2Clean Energy Systems, Inc. · 2011
- Triple column distillation system for oxygen and pressurized nitrogen production46US 5,341,646 AAir Products and Chemicals, Inc. · 1994
- Tonnage nitrogen generator38US 4,222,756 AAir Products and Chemicals, Inc. · 1980
- Cryogenic hybrid system for producing high purity argon37US 5,730,003 APraxair Technology, Inc. · 1998
- Cycle to produce low purity oxygen35US 4,704,148 AAir Products and Chemicals, Inc. · 1987