C01B 7/01
Chlorine
Official title: Chlorine; Hydrogen chloride
C01B7/01 (Chlorine) appears on 727 US grants and 566 published applications in this corpus.
Search patents in C01B- Granted patents
- 727
- Published applications
- 566
- Assignees
- 409
- Inventors
- 1,677
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 30 | 0 |
| 1977 | 27 | 0 |
| 1978 | 25 | 0 |
| 1979 | 21 | 0 |
| 1980 | 19 | 0 |
| 1981 | 18 | 0 |
| 1982 | 10 | 0 |
| 1983 | 14 | 0 |
| 1984 | 14 | 0 |
| 1985 | 5 | 0 |
| 1986 | 7 | 0 |
| 1987 | 8 | 0 |
| 1988 | 5 | 0 |
| 1989 | 10 | 0 |
| 1990 | 9 | 0 |
| 1991 | 14 | 0 |
| 1992 | 24 | 0 |
| 1993 | 13 | 0 |
| 1994 | 12 | 0 |
| 1995 | 9 | 0 |
| 1996 | 9 | 0 |
| 1997 | 13 | 0 |
| 1998 | 24 | 0 |
| 1999 | 15 | 0 |
| 2000 | 11 | 0 |
| 2001 | 15 | 7 |
| 2002 | 14 | 24 |
| 2003 | 10 | 21 |
| 2004 | 19 | 26 |
| 2005 | 11 | 6 |
| 2006 | 10 | 11 |
| 2007 | 6 | 33 |
| 2008 | 4 | 30 |
| 2009 | 6 | 22 |
| 2010 | 16 | 36 |
| 2011 | 17 | 41 |
| 2012 | 20 | 34 |
| 2013 | 17 | 20 |
| 2014 | 20 | 25 |
| 2015 | 14 | 22 |
| 2016 | 16 | 20 |
| 2017 | 16 | 22 |
| 2018 | 25 | 26 |
| 2019 | 21 | 25 |
| 2020 | 22 | 17 |
| 2021 | 11 | 11 |
| 2022 | 15 | 17 |
| 2023 | 9 | 17 |
| 2024 | 9 | 24 |
| 2025 | 15 | 20 |
| 2026 | 3 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for the separation of phosphorus pentafluoride from hydrogen chloride11 Aug 2026US 12,702,948 B2Mexichem Fluor S.A. De C.V.
- Method of separating phosgene and hydrogen chloride23 Jun 2026US 12,662,376 B2BASF SE
- Process for preparation of chlorine from hydrogen chloride31 Mar 2026US 12,589,996 B2The Regents of the University of California
- Method and system for preparing hydrogen chloride and ammonia gas by using ammonium chloride16 Dec 2025US 12,497,293 B2Yuanchu Technology (Beijing) Co., Ltd.
- Molding catalyst for hydrogen chloride oxidation reaction, and method for producing same18 Nov 2025US 12,472,486 B2Hanwha Solutions Corporation
- Process for manufacturing high-purity magnesium oxide from magnesium chloride13 Aug 2026US 2026/0234014 A1
- System and method for converting carbon dioxide in a gas stream to commercially desirable chemical products6 Aug 2026US 2026/0225031 A1Rushnu Inc
- Method for producing metal borohydride from metal boron oxide16 Jul 2026US 2026/0200730 A1H2Fuel-Systems B.V.
- Process system for surface treatment, recycling equipment for waste liquid and method for recycling waste liquid2 Jul 2026US 2026/0183715 A1Industrial Technology Research Institute
- A method for preparing lithium hexafluorophosphate11 Jun 2026US 2026/0159403 A1Gujarat Fluorochemicals Limited
Most cited
By later US patents
- Fast quench reactor method295US 5,935,293 ALockheed Martin Idaho Technologies Company · 1999
- Fast quench reactor and method231US 5,749,937 ALockheed Idaho Technologies Company · 1998
- Monomodal and polymodal catalyst supports and catalysts having narrow pore size distributions and their production129US 5,935,897 ABASF SE · 1999
- Thermal synthesis apparatus and process128US 6,821,500 B2Bechtel BWXT Idaho, LLC · 2004
- Bipolar membranes and method of making same111US 4,116,889 AAllied Chemical Corporation · 1978