C25B 1/26
Chlorine
Official title: Chlorine; Compounds thereof (by simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine C25B1/34)
C25B1/26 (Chlorine) appears on 577 US grants and 672 published applications in this corpus.
Search patents in C25B- Granted patents
- 577
- Published applications
- 672
- Assignees
- 419
- Inventors
- 1,448
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 6 | 0 |
| 1978 | 14 | 0 |
| 1979 | 5 | 0 |
| 1980 | 11 | 0 |
| 1981 | 17 | 0 |
| 1982 | 12 | 0 |
| 1983 | 7 | 0 |
| 1984 | 12 | 0 |
| 1985 | 7 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 6 | 0 |
| 1989 | 7 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 13 | 0 |
| 1993 | 11 | 0 |
| 1994 | 10 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 5 | 0 |
| 1998 | 6 | 0 |
| 1999 | 12 | 0 |
| 2000 | 7 | 0 |
| 2001 | 8 | 0 |
| 2002 | 12 | 5 |
| 2003 | 2 | 10 |
| 2004 | 4 | 9 |
| 2005 | 6 | 8 |
| 2006 | 4 | 6 |
| 2007 | 1 | 14 |
| 2008 | 1 | 15 |
| 2009 | 2 | 7 |
| 2010 | 8 | 21 |
| 2011 | 9 | 23 |
| 2012 | 12 | 32 |
| 2013 | 11 | 23 |
| 2014 | 17 | 34 |
| 2015 | 17 | 46 |
| 2016 | 22 | 50 |
| 2017 | 23 | 38 |
| 2018 | 30 | 40 |
| 2019 | 31 | 27 |
| 2020 | 25 | 38 |
| 2021 | 22 | 35 |
| 2022 | 25 | 45 |
| 2023 | 24 | 37 |
| 2024 | 22 | 42 |
| 2025 | 28 | 45 |
| 2026 | 22 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Production of chlorine, carbon monoxide and optionally hydrogen29 Sep 2026US 12,747,507 B2
- Water sanitization device, system and method1 Sep 2026US 12,722,991 B2Waterco Limited
- Electrode for electrolysis1 Sep 2026US 12,723,316 B2LG Chem.Ltd.
- Electrochemical cell and process for producing metal and chlorine gas18 Aug 2026US 12,709,814 B2University of Oregon
- Electrochemical device for producing biocide solutions4 Aug 2026US 12,698,566 B2Suretol Limited
- Method for reactivating an electrolysis cell unit8 Oct 2026US 2026/0308780 A1thyssenkrupp nucera AG & Co. KGaA
- Method and system for operating an electrochemical reactor8 Oct 2026US 2026/0308790 A1Covestro Deutschland AG
- Base station for a floor cleaner1 Oct 2026US 2026/0294197 A1BSH Hausgeräte GmbH
- Large volume chlorine dioxide sterilization and/or disinfection system and method of using same24 Sep 2026US 2026/0283156 A1
- Sustainable preparation of hexamethylene diisocyanate for the production of polyurethane17 Sep 2026US 2026/0274787 A1Covestro Deutschland AG
Most cited
By later US patents
- Gas diffusion anode and CO2 cathode electrolyte system100US 7,993,500 B2Calera Corporation · 2011
- Electrochemical process for producing chloric acid - alkali metal chlorate mixtures96US 5,084,148 AOlin Corporation · 1992
- Low energy electrochemical hydroxide system and method93US 7,790,012 B2Calera Corporation · 2010
- Electrochemical process for producing chlorine dioxide solutions from chlorites91US 5,106,465 AOlin Corporation · 1992
- Electrochemical conversion of anhydrous hydrogen halide to halogen gas using a cation-transporting membrane83US 5,411,641 AE. I. Du Pont de Nemours and Company · 1995