C02F 11/20
By freezing
Official title: by freezing
C02F11/20 (By freezing) appears on 25 US grants and 13 published applications in this corpus.
Search patents in C02F- Granted patents
- 25
- Published applications
- 13
- Assignees
- 19
- Inventors
- 64
- Latest grant
- 6 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 1 |
| 2021 | 0 | 2 |
| 2022 | 3 | 2 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process for anaerobic digestion of carbonaceous material6 Jan 2026US 12,515,975 B2Suez International
- Waste management system8 Nov 2022US 11,491,493 B2
- Waste management system10 May 2022US 11,325,280 B2
- Waste management system15 Mar 2022US 11,273,580 B2
- Method and arrangement for dewatering sludge15 Dec 2020US 10,865,131 B2Elajo Technology Solutions AB
- Drying apparatus and associated drying process26 Feb 2026US 2026/0055960 A1Aspcold Limited
- Process for anaerobic digestion of carbonaceous material11 Jul 2024US 2024/0228354 A1Suez International
- Waste Management System30 Jun 2022US 2022/0203378 A1
- Polyhydroxyalkanoates extraction system13 Jan 2022US 2022/0010059 A1National Chi Nan University
- Waste Management System18 Mar 2021US 2021/0078209 A1
Most cited
By later US patents
- Vacuum freezing ambient pressure melting (VFAPM) process and sub-triple point vapor processing unit for use therein19US 4,810,274 A1989
- Apparatus for concentrating a feed stream18US 4,091,635 AAvco Corporation · 1978
- Separation of an aqueous solution by the improved vacuum freezing high pressure ice melting process18US 4,236,382 A1980
- Process for obtaining purified water from wet sludges and slurries of solid materials17US 4,670,159 ABenmol Corporation · 1987
- Methods for processing wastes using potential heat of waste gas prior to incineration16US 5,347,938 A1994