F25J 3/04921
Within the same column
Official title: {within the same column}
F25J3/04921 (Within the same column) appears on 26 US grants and 19 published applications in this corpus.
Search patents in F25J- Granted patents
- 26
- Published applications
- 19
- Assignees
- 10
- Inventors
- 52
- Latest grant
- 23 Feb 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 3 |
| 2016 | 0 | 0 |
| 2017 | 2 | 2 |
| 2018 | 0 | 1 |
| 2019 | 1 | 5 |
| 2020 | 7 | 3 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Annular divided wall column23 Feb 2021US 10,928,129 B2Praxair Technology, Inc.
- Annular divided wall column with ring shaped collectors and distributers15 Dec 2020US 10,866,025 B2Praxair Technology, Inc.
- Annular divided wall column15 Dec 2020US 10,866,026 B2Praxair Technology, Inc.
- Distillation column system and plant for production of oxygen by cryogenic fractionation of air24 Nov 2020US 10,845,118 B2Linde Aktiengesellschaft
- Annular divided wall column for an air separation unit16 Jun 2020US 10,684,071 B2Praxair Technology, Inc.
- Argon column for air separation unit and air separation unit13 Mar 2025US 2025/0085050 A1Taiyo Nippon Sanso Corporation
- Annular divided wall column13 Aug 2020US 2020/0256616 A1Praxair Technology, Inc.
- Annular divided wall column14 May 2020US 2020/0149809 A1Praxair Technology, Inc.
- Annular divided wall column with ring shaped collectors and distributers14 May 2020US 2020/0149810 A1Praxair Technology, Inc.
- Annular divided wall column for an air separation unit28 Feb 2019US 2019/0063827 A1
Most cited
By later US patents
- Packed column for exchanging heat and/or mass32US 6,672,572 B2L 'Air Liquide-Societe 'Anonyme a 'Directoire et Conseil de Surveillance pour l 'Etude et L'Exploitation des Procedes Georges Claude · 2004
- Method of purifying argon through cryogenic adsorption29US 5,159,816 AAir Products and Chemicals, Inc. · 1992
- Divided wall columns for smaller sized plants24US 8,480,860 B2Air Products and Chemicals, Inc. · 2013
- Variable density structured packing cryogenic distillation system23US 5,100,448 AUnion Carbide Industrial Gases Technology Corporation · 1992
- Double column air separation process with hybrid upper column20US 4,838,913 AUnion Carbide Corporation · 1989