F25J 1/0249
Controlling refrigerant inventory, i.e. composition or quantity
Official title: {Controlling refrigerant inventory, i.e. composition or quantity (charging or discharging refrigerants in cooling systems F25B45/00)}
F25J1/0249 (Controlling refrigerant inventory, i.e. composition or quantity) appears on 126 US grants and 168 published applications in this corpus.
Search patents in F25J- Granted patents
- 126
- Published applications
- 168
- Assignees
- 76
- Inventors
- 362
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 4 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 2 |
| 2002 | 2 | 0 |
| 2003 | 4 | 1 |
| 2004 | 0 | 2 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 2 | 0 |
| 2008 | 1 | 5 |
| 2009 | 1 | 9 |
| 2010 | 0 | 10 |
| 2011 | 2 | 5 |
| 2012 | 1 | 5 |
| 2013 | 1 | 7 |
| 2014 | 1 | 8 |
| 2015 | 5 | 6 |
| 2016 | 3 | 8 |
| 2017 | 10 | 8 |
| 2018 | 4 | 17 |
| 2019 | 9 | 8 |
| 2020 | 11 | 14 |
| 2021 | 3 | 7 |
| 2022 | 6 | 5 |
| 2023 | 8 | 13 |
| 2024 | 7 | 7 |
| 2025 | 3 | 13 |
| 2026 | 6 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Single mixed refrigerant LNG production process22 Sep 2026US 12,742,588 B2Honeywell Lng LLC
- Method and system for producing a liquefied natural gas product18 Aug 2026US 12,710,225 B2Linde Aktiengesellschaft
- Installation and method for liquefying a cryogenic fluid18 Aug 2026US 12,710,227 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Liquefied natural gas production facility on gravity-based structures16 Jun 2026US 12,656,058 B2Publichnoe Aktsionernoe Obshchestvo "NOVATEK"
- Liquified natural gas processing cold box with internal refrigerant storage3 Feb 2026US 12,540,773 B2
- Green Hydrogen Production Process (GHPP)21 May 2026US 2026/0139396 A1Element Resources Inc.
- Liquified natural gas processing cold box with internal refrigerant storage30 Apr 2026US 2026/0118052 A1
- System and method for precooling a hydrogen feed stream with concurrent nitrogen liquefaction5 Feb 2026US 2026/0036362 A1
- Control system for vessel reliquefaction system5 Feb 2026US 2026/0036364 A1Hanwha Ocean Co., Ltd.
- Cooling facility and method29 Jan 2026US 2026/0029192 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
Most cited
By later US patents
- Process for liquefaction of natural gas137US 6,023,942 AExxon Production Research Company · 2000
- Multi-component refrigeration process for liquefaction of natural gas100US 5,950,453 AExxon Production Research Company · 1999
- Natural gas liquefaction pretreatment process63US 5,325,673 AThe M. W. Kellogg Company · 1994
- Single mixed refrigerant, closed loop process for liquefying natural gas60US 4,033,735 AJ. F. Pritchard and Company · 1977
- Process of liquefying a gaseous, methane-rich feed to obtain liquefied natural gas52US 6,272,882 B1Shell Research Limited · 2001