F25J 2220/42
Separating low boiling, i.e. more volatile components from nitrogen
Official title: Separating low boiling, i.e. more volatile components from nitrogen, e.g. He, H2, Ne
F25J2220/42 (Separating low boiling, i.e. more volatile components from nitrogen) appears on 34 US grants and 8 published applications in this corpus.
Search patents in F25J- Granted patents
- 34
- Published applications
- 8
- Assignees
- 18
- Inventors
- 54
- Latest grant
- 25 May 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 7 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 2 |
| 2003 | 1 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 2 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method and system for producing olefins25 May 2021US 11,014,860 B2Linde Aktiengesellschaft
- Process and apparatus for producing high-purity nitrogen by low-temperature fractionation of air23 Mar 2004US 6,708,523 B2Linde Aktiengesellschaft
- Cryogenic system for providing industrial gas to a use point30 Dec 2003US 6,668,581 B1Praxair Technology, Inc.
- Process and apparatus for generating high-purity nitrogen by low-temperature fractionation of air31 Dec 2002US 6,499,313 B2Linde Aktiengesellschaft
- Process for obtaining gaseous and liquid nitrogen with a variable proportion of liquid product12 Nov 2002US 6,477,860 B2Linde Aktiengesellschaft
- Purification process for production of ultra high purity carbon monoxide26 Dec 2019US 2019/0390901 A1Linde Aktiengesellschaft
- Method and system for producing olefins19 Sep 2019US 2019/0284112 A1Linde Aktiengesellschaft
- Method for recovering helium25 Jan 2018US 2018/0023888 A1Linde Aktiengesellschaft
- Method for Separating Trace Components from a Nitrogen-Rich Stream12 Jun 2008US 2008/0134716 A1
- Process and apparatus for producing high-purity nitrogen by low-temperature fractionation of air1 May 2003US 2003/0079499 A1Linde Aktiengesellschaft
Most cited
By later US patents
- Process and apparatus for air separation by rectification24US 4,824,453 ALinde Aktiengesellschaft · 1989
- Distillation strategies for the production of carbon monoxide-free nitrogen18US 5,351,492 AAir Products and Chemicals, Inc. · 1994
- Process and apparatus for producing nitrogen of ultra-high purity14US 5,170,630 AThe BOC Group, Inc. · 1992
- Simplified apparatus for producing liquid nitrogen14US 5,327,729 AIwatani Plantech Corporation · 1994
- Method and apparatus for the production of ultra-high purity nitrogen10US 5,349,822 ATeisan Kabushiki Kaisha · 1994