F25J 2250/20
Boiler-condenser with multiple exchanger cores in parallel or with multiple re-boiling or
Official title: Boiler-condenser with multiple exchanger cores in parallel or with multiple re-boiling or condensing streams
F25J2250/20 (Boiler-condenser with multiple exchanger cores in parallel or with multiple re-boiling or) appears on 188 US grants and 108 published applications in this corpus.
Search patents in F25J- Granted patents
- 188
- Published applications
- 108
- Assignees
- 43
- Inventors
- 244
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 6 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 8 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 7 | 0 |
| 1993 | 11 | 0 |
| 1994 | 6 | 0 |
| 1995 | 7 | 0 |
| 1996 | 4 | 0 |
| 1997 | 12 | 0 |
| 1998 | 9 | 0 |
| 1999 | 11 | 0 |
| 2000 | 2 | 0 |
| 2001 | 8 | 3 |
| 2002 | 6 | 3 |
| 2003 | 3 | 1 |
| 2004 | 1 | 3 |
| 2005 | 0 | 1 |
| 2006 | 3 | 4 |
| 2007 | 2 | 2 |
| 2008 | 2 | 5 |
| 2009 | 0 | 5 |
| 2010 | 1 | 3 |
| 2011 | 1 | 4 |
| 2012 | 2 | 1 |
| 2013 | 2 | 4 |
| 2014 | 0 | 0 |
| 2015 | 2 | 5 |
| 2016 | 9 | 14 |
| 2017 | 3 | 9 |
| 2018 | 8 | 3 |
| 2019 | 9 | 3 |
| 2020 | 1 | 3 |
| 2021 | 1 | 11 |
| 2022 | 4 | 3 |
| 2023 | 3 | 7 |
| 2024 | 2 | 6 |
| 2025 | 5 | 2 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Air separation unit and air separation method25 Aug 2026US 12,716,651 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
- Nitrogen generating device and nitrogen generating method31 Mar 2026US 12,590,758 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Process and plant for low-temperature separation of air9 Dec 2025US 12,492,863 B2Linde Aktiengesellschaft
- Method of reducing mercury in stabilized condensate2 Dec 2025US 12,487,029 B2Chevron U.S.A.Inc.
- Cryogenic boiler27 Aug 2026US 2026/0251387 A1Blue Origin Manufacturing, LLC
- Process and apparatus for purifying air and cryogenic air separation process and plant20 Aug 2026US 2026/0243508 A1
- High-purity oxygen production apparatus5 Mar 2026US 2026/0063360 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Process and plant for providing a nitrogen product, an oxygen product and a hydrogen product28 Aug 2025US 2025/0271208 A1Linde Aktiengesellschaft
- High-purity oxygen production method, and air separation device for producing high-purity oxygen12 Jun 2025US 2025/0189218 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
Most cited
By later US patents
- Efficient process to produce oxygen48US 5,966,967 AAir Products and Chemicals, Inc. · 1999
- Air separation process and apparatus for high argon recovery and moderate pressure nitrogen recovery46US 4,822,395 AUnion Carbide Corporation · 1989
- Cryogenic air separation with cold argon recycle38US 4,533,375 A1985
- Tonnage nitrogen air separation with side reboiler condenser35US 4,617,036 AAir Products and Chemicals, Inc. · 1986
- Air separation process for the production of oxygen-rich and nitrogen-rich products34US 4,936,099 AAir Products and Chemicals, Inc. · 1990