C01B 32/80
Phosgene
C01B32/80 (Phosgene) appears on 87 US grants and 88 published applications in this corpus.
Search patents in C01B- Granted patents
- 87
- Published applications
- 88
- Assignees
- 50
- Inventors
- 260
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 4 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 2 |
| 2003 | 0 | 1 |
| 2004 | 0 | 2 |
| 2005 | 2 | 2 |
| 2006 | 0 | 6 |
| 2007 | 1 | 6 |
| 2008 | 7 | 2 |
| 2009 | 4 | 2 |
| 2010 | 2 | 1 |
| 2011 | 1 | 5 |
| 2012 | 2 | 2 |
| 2013 | 5 | 3 |
| 2014 | 4 | 2 |
| 2015 | 3 | 3 |
| 2016 | 3 | 6 |
| 2017 | 9 | 7 |
| 2018 | 4 | 4 |
| 2019 | 3 | 1 |
| 2020 | 1 | 4 |
| 2021 | 2 | 2 |
| 2022 | 1 | 7 |
| 2023 | 0 | 6 |
| 2024 | 0 | 7 |
| 2025 | 6 | 3 |
| 2026 | 4 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method of separating phosgene and hydrogen chloride23 Jun 2026US 12,662,376 B2BASF SE
- Process, reaction mixture and catalyst for the production of phosgene5 May 2026US 12,617,685 B2BASF SE
- Process and reactor for producing phosgene31 Mar 2026US 12,590,005 B2BASF SE
- Phosgene production unit13 Jan 2026US 12,521,690 B2BASF SE
- Reactor tube assembly7 Oct 2025US 12,434,213 B2Sabic Global Technologies B.V.
- Sustainable preparation of hexamethylene diisocyanate for the production of polyurethane17 Sep 2026US 2026/0274787 A1Covestro Deutschland AG
- Method for producing carbonyl halide28 May 2026US 2026/0145949 A1Mitsubishi Gas Chemical Company, Inc.
- Process for producing phosgene18 Dec 2025US 2025/0382183 A1BASF SE
- Method for gasification of polymeric recyclable materials for the low-emission supply of carbon monoxide usable for the production of phosgene22 May 2025US 2025/0162878 A1Covestro Deutschland AG
- Method for producing phosgene6 Feb 2025US 2025/0042747 A1Covestro Deutschland AG
Most cited
By later US patents
- Separation of a substance mixture consisting of hydrogen chloride and phosgene38US 7,584,629 B2BASF SE · 2009
- Process for the production of phosgene with simultaneous generation of steam30US 4,764,308 ABayer Aktiengesellschaft · 1988
- Microwave chemical processing21US 9,812,295 B1Lyten, Inc. · 2017
- Phosgene manufacture19US 4,231,959 AStauffer Chemical Company · 1980
- Ionic liquid based mixtures for gas storage and delivery14US 7,404,845 B2Air Products and Chemicals, Inc. · 2008