B01D 2257/2045
Hydrochloric acid
B01D2257/2045 (Hydrochloric acid) appears on 370 US grants and 483 published applications in this corpus.
Search patents in B01D- Granted patents
- 370
- Published applications
- 483
- Assignees
- 302
- Inventors
- 1,186
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 6 | 11 |
| 2003 | 1 | 4 |
| 2004 | 7 | 9 |
| 2005 | 4 | 10 |
| 2006 | 7 | 7 |
| 2007 | 5 | 9 |
| 2008 | 4 | 9 |
| 2009 | 5 | 19 |
| 2010 | 15 | 21 |
| 2011 | 4 | 20 |
| 2012 | 17 | 24 |
| 2013 | 19 | 26 |
| 2014 | 21 | 32 |
| 2015 | 24 | 26 |
| 2016 | 21 | 44 |
| 2017 | 31 | 27 |
| 2018 | 28 | 32 |
| 2019 | 23 | 23 |
| 2020 | 25 | 24 |
| 2021 | 15 | 12 |
| 2022 | 15 | 19 |
| 2023 | 19 | 20 |
| 2024 | 13 | 21 |
| 2025 | 8 | 18 |
| 2026 | 12 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for removing HCL in chlorination reaction29 Sep 2026US 12,746,484 B2Hanwha Solutions Corporation
- Treatment method and device for waste plastic18 Aug 2026US 12,709,713 B2PetroChina Company Limited
- Method for the separation of phosphorus pentafluoride from hydrogen chloride11 Aug 2026US 12,702,948 B2Mexichem Fluor S.A. De C.V.
- Carbon dioxide capture device and method16 Jun 2026US 12,654,124 B2Enviro Ambient Corporation
- GIS-type zeolite formed body, adsorption apparatus, separation method, and GIS-type zeolite16 Jun 2026US 12,654,149 B2Asahi Kasei Kabushiki Kaisha
- Method for obtaining a synthesis gas from waste products via a gasification reaction in conjunction with a reforming reaction with thermal energy recirculation27 Aug 2026US 2026/0250587 A1Cyclize GmbH
- Battery thermal runaway flue gas treatment device and battery27 Aug 2026US 2026/0254046 A1D-Aus Energy Storage Technology (Xi'an) Co., Ltd.
- Exhaust gas purification method and exhaust gas purification apparatus20 Aug 2026US 2026/0241339 A1Mitsubishi Heavy Industries, Ltd.
- System and method for converting carbon dioxide in a gas stream to commercially desirable chemical products6 Aug 2026US 2026/0225031 A1Rushnu Inc
- Mitigating chloride ion oxidation during saline water electrolysis for hydrogen production and carbon dioxide mineralization6 Aug 2026US 2026/0225925 A1The Regents of the University of California
Most cited
By later US patents
- Environmental control unit, and air handling systems and methods using same100US 6,796,896 B22004
- Adsorption process for continuous purification of high value gas feeds84US 7,166,149 B2Uop LLC · 2007
- Multifunctional air filter and air-circulating clean unit with the same incorporated therein69US 5,772,738 AKabushiki Kaisha Toshiba · 1998
- Multi-component removal in flue gas by aqua ammonia63US 7,255,842 B1United States of America Department of Energy · 2007
- Gas cabinet assembly comprising sorbent-based gas storage and delivery system56US 6,406,519 B1Advanced Technology Materials, Inc. · 2002