C25C 3/22
Collecting emitted gases
C25C3/22 (Collecting emitted gases) appears on 69 US grants and 62 published applications in this corpus.
Search patents in C25C- Granted patents
- 69
- Published applications
- 62
- Assignees
- 54
- Inventors
- 189
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 5 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 2 | 1 |
| 2005 | 1 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 3 |
| 2008 | 1 | 4 |
| 2009 | 0 | 1 |
| 2010 | 1 | 3 |
| 2011 | 0 | 2 |
| 2012 | 2 | 2 |
| 2013 | 1 | 7 |
| 2014 | 3 | 3 |
| 2015 | 2 | 1 |
| 2016 | 6 | 5 |
| 2017 | 3 | 4 |
| 2018 | 1 | 1 |
| 2019 | 2 | 1 |
| 2020 | 1 | 1 |
| 2021 | 0 | 1 |
| 2022 | 0 | 4 |
| 2023 | 0 | 1 |
| 2024 | 1 | 6 |
| 2025 | 5 | 3 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for producing highB purity aluminum from aluminum chloride25 Aug 2026US 12,715,778 B2Aluminum Technologies, LLC
- Process for selective chlorination of aluminous ores for the preparation of aluminum6 Jan 2026US 12,515,961 B2Aluminum Technologies, LLC
- Reduction cell for producing aluminum6 Jan 2026US 12,515,962 B2Aluminum Technologies, LLC
- System and method for collecting and pre-treating process gases generated by an electrolysis cell30 Dec 2025US 12,509,788 B2Elysis Limited Partnership
- Integrated systems employing carbon oxide electrolysis in aluminum production4 Nov 2025US 12,460,310 B2Twelve Benefit Corporation
- System and method for collecting and pre-treating process gases generated by an electrolysis cell6 Aug 2026US 2026/0226642 A1Elysis Limited Partnership
- An aluminum electrolysis cell30 Jul 2026US 2026/0218405 A1Central South University
- Systems and methods for in-situ resource processing and in-situ resource utilisation28 May 2026US 2026/0146353 A1
- Waste Heat Recovery and Utilization System and method26 Mar 2026US 2026/0085887 A1Zhengzhou Non-Ferrous Metals Research Institute Co. Ltd of Chalco
- Systems and methods for recovery of substances from molten salt electrolysis5 Feb 2026US 2026/0034510 A1Phoenix Tailings, Inc.
Most cited
By later US patents
- Process for recovering CF.sub.4 and C.sub.2 F.sub.6 from a gas27US 5,814,127 AAmerican Air Liquide, Inc. · 1998
- Method of and apparatus for the treatment of exhaust-gases in the electrolytic production of aluminum24US 4,006,066 AMetallgesellschaft Aktiengesellschaft · 1977
- Arrangement for closing the top of a Soderberg anode in an electrolytic cell or production of aluminum20US 5,128,012 AElkem Aluminium ANS · 1992
- Method of producing anhydrous aluminum chloride from acid leach-derived ACH and the production of aluminum therefrom17US 4,465,566 AAtlantic Richfield Company · 1984
- Hall cell15US 4,222,841 AAlumax Inc. · 1980