F25J 3/04684
And a bottom re-boiler
Official title: {and a bottom re-boiler (F25J3/04696 takes precedence)}
F25J3/04684 (And a bottom re-boiler) appears on 11 US grants and 10 published applications in this corpus.
Search patents in F25J- Granted patents
- 11
- Published applications
- 10
- Assignees
- 3
- Inventors
- 11
- Latest grant
- 12 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 2 | 2 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 3 |
| 2020 | 3 | 3 |
| 2021 | 2 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Process and apparatus for improved recovery of argon12 Aug 2025US 12,385,692 B2Air Products and Chemicals, Inc.
- System and method for enhanced recovery of liquid oxygen from a nitrogen and argon producing cryogenic air separation unit20 Apr 2021US 10,981,103 B2Praxair Technology, Inc.
- System and method for enhanced recovery of argon and oxygen from a nitrogen producing cryogenic air separation unit6 Apr 2021US 10,969,168 B2Praxair Technology, Inc.
- System and method for enhanced recovery of argon and oxygen from a nitrogen producing cryogenic air separation unit26 May 2020US 10,663,222 B2Praxair Technology, Inc.
- System and method for enhanced recovery of argon and oxygen from a nitrogen producing cryogenic air separation unit26 May 2020US 10,663,223 B2Praxair Technology, Inc.
- Process and Apparatus for Improved Recovery of Argon18 Apr 2024US 2024/0125550 A1Air Products and Chemicals, Inc.
- System and method for enhanced recovery of argon and oxygen from a nitrogen producing cryogenic air separation unit14 May 2020US 2020/0149806 A1
- System and method for enhanced recovery of argon and oxygen from a nitrogen producing cryogenic air separation unit14 May 2020US 2020/0149807 A1Praxair Technology, Inc.
- System and method for enhanced recovery of liquid oxygen from a nitrogen and argon producing cryogenic air separation unit20 Feb 2020US 2020/0054985 A1Praxair Technology, Inc.
- System and method for enhanced recovery of argon and oxygen from a nitrogen producing cryogenic air separation unit31 Oct 2019US 2019/0331416 A1Praxair Technology, Inc.
Most cited
By later US patents
- Cryogenic rectification system with thermally integrated argon column15US 5,305,611 APraxair Technology, Inc. · 1994
- System and method for enhanced recovery of argon and oxygen from a nitrogen producing cryogenic air separation unit9US 10,663,222 B2Praxair Technology, Inc. · 2020
- System and method for enhanced recovery of argon and oxygen from a nitrogen producing cryogenic air separation unit9US 10,663,223 B2Praxair Technology, Inc. · 2020
- System and method for enhanced recovery of argon and oxygen from a nitrogen producing cryogenic air separation unit8US 10,663,224 B2Praxair Technology, Inc. · 2020
- System and method for enhanced recovery of argon and oxygen from a nitrogen producing cryogenic air separation unit5US 10,969,168 B2Praxair Technology, Inc. · 2021