F25J 3/04393
Using multiple or multistage gas work expansion
Official title: {using multiple or multistage gas work expansion}
F25J3/04393 (Using multiple or multistage gas work expansion) appears on 212 US grants and 150 published applications in this corpus.
Search patents in F25J- Granted patents
- 212
- Published applications
- 150
- Assignees
- 50
- Inventors
- 240
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 7 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 7 | 0 |
| 1993 | 5 | 0 |
| 1994 | 10 | 0 |
| 1995 | 11 | 0 |
| 1996 | 11 | 0 |
| 1997 | 11 | 0 |
| 1998 | 12 | 0 |
| 1999 | 15 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 1 |
| 2002 | 6 | 4 |
| 2003 | 4 | 1 |
| 2004 | 2 | 3 |
| 2005 | 2 | 2 |
| 2006 | 2 | 4 |
| 2007 | 2 | 3 |
| 2008 | 2 | 3 |
| 2009 | 1 | 5 |
| 2010 | 0 | 1 |
| 2011 | 0 | 10 |
| 2012 | 0 | 5 |
| 2013 | 1 | 5 |
| 2014 | 3 | 5 |
| 2015 | 4 | 5 |
| 2016 | 2 | 10 |
| 2017 | 4 | 17 |
| 2018 | 8 | 11 |
| 2019 | 8 | 7 |
| 2020 | 7 | 6 |
| 2021 | 10 | 11 |
| 2022 | 3 | 6 |
| 2023 | 6 | 10 |
| 2024 | 4 | 7 |
| 2025 | 4 | 6 |
| 2026 | 4 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and apparatus for cryogenic air separation8 Sep 2026US 12,729,907 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Method and plant for low temperature fractionation of air18 Aug 2026US 12,710,228 B2Linde Aktiengesellschaft
- Oxygen liquefier design phasing26 May 2026US 12,638,235 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Method for separating air by cryogenic distillation26 May 2026US 12,638,239 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Apparatus and process for liquefying gases9 Dec 2025US 12,492,864 B1
- Air separation method and air separation device30 Jul 2026US 2026/0218981 A1Taiyo Nippon Sanso Corporation
- Method for cryogenic separation of air, and air separation plant16 Jul 2026US 2026/0202125 A1Linde Aktiengesellschaft
- Liquid nitrogen generator and process30 Oct 2025US 2025/0334332 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Apparatus and process for providing nitrogen and oxygen18 Sep 2025US 2025/0290692 A1Air Products and Chemicals, Inc.
- Air separation unit21 Aug 2025US 2025/0264274 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
Most cited
By later US patents
- Process for recovering hydrogen from a multi-component gas stream113US 4,654,063 AAir Products and Chemicals, Inc. · 1987
- Integrated air separation plant-integrated gasification combined cycle power generator60US 5,421,166 AAir Products and Chemicals, Inc. · 1995
- Integrated air separation plant - integrated gasification combined cycle power generator54US 5,081,845 AAir Products and Chemicals, Inc. · 1992
- Process for the generation of gaseous and/or liquid nitrogen49US 4,595,405 AAir Products and Chemicals, Inc. · 1986
- Efficient process to produce oxygen48US 5,966,967 AAir Products and Chemicals, Inc. · 1999