F25J 3/04236
Integration of different exchangers in a single core, so-called integrated cores
Official title: {Integration of different exchangers in a single core, so-called integrated cores (F25J3/04624 takes precedence)}
F25J3/04236 (Integration of different exchangers in a single core, so-called integrated cores) appears on 43 US grants and 41 published applications in this corpus.
Search patents in F25J- Granted patents
- 43
- Published applications
- 41
- Assignees
- 17
- Inventors
- 86
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 7 | 1 |
| 2002 | 0 | 1 |
| 2003 | 2 | 2 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 2 | 3 |
| 2007 | 0 | 2 |
| 2008 | 1 | 3 |
| 2009 | 3 | 3 |
| 2010 | 1 | 1 |
| 2011 | 0 | 2 |
| 2012 | 1 | 1 |
| 2013 | 1 | 2 |
| 2014 | 0 | 0 |
| 2015 | 1 | 2 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 2 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
| 2022 | 1 | 4 |
| 2023 | 1 | 2 |
| 2024 | 0 | 3 |
| 2025 | 0 | 2 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and plant for low temperature fractionation of air18 Aug 2026US 12,710,228 B2Linde Aktiengesellschaft
- Method and unit for low-temperature air separation19 Dec 2023US 11,846,468 B2Linde Aktiengesellschaft
- System and method for flexible recovery of argon from a cryogenic air separation unit1 Mar 2022US 11,262,125 B2Praxair Technology, Inc.
- Process and apparatus for separating air using a split heat exchanger6 Jul 2021US 11,054,182 B2Air Products and Chemicals, Inc.
- Heat exchanger assembly25 Jun 2019US 10,330,391 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- 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
- Heat exchanger5 Feb 2026US 2026/0036366 A1Taiyo Nippon Sanso Corporation
- 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
- Tonnage nitrogen generator38US 4,222,756 AAir Products and Chemicals, Inc. · 1980
- Method and apparatus for producing elevated pressure nitrogen29US 5,098,457 AUnion Carbide Industrial Gases Technology Corporation · 1992
- Process and apparatus for the production of gaseous oxygen under pressure29US 5,329,776 AL Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude · 1994
- Method for operating a cryogenic rectification column17US 6,212,907 B1Praxair Technology, Inc. · 2001
- Process and installation for the production of gaseous oxygen under pressure16US 5,596,885 AL Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude · 1997