B01D 2257/204
Inorganic halogen compounds
B01D2257/204 (Inorganic halogen compounds) appears on 598 US grants and 800 published applications in this corpus.
Search patents in B01D- Granted patents
- 598
- Published applications
- 800
- Assignees
- 452
- Inventors
- 1,928
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 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 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 5 | 0 |
| 1998 | 6 | 0 |
| 1999 | 5 | 0 |
| 2000 | 3 | 0 |
| 2001 | 7 | 4 |
| 2002 | 11 | 15 |
| 2003 | 6 | 10 |
| 2004 | 12 | 24 |
| 2005 | 10 | 14 |
| 2006 | 12 | 13 |
| 2007 | 8 | 17 |
| 2008 | 9 | 19 |
| 2009 | 7 | 33 |
| 2010 | 21 | 39 |
| 2011 | 17 | 31 |
| 2012 | 22 | 33 |
| 2013 | 30 | 45 |
| 2014 | 31 | 44 |
| 2015 | 34 | 37 |
| 2016 | 32 | 54 |
| 2017 | 40 | 35 |
| 2018 | 34 | 52 |
| 2019 | 35 | 43 |
| 2020 | 37 | 37 |
| 2021 | 26 | 31 |
| 2022 | 32 | 35 |
| 2023 | 26 | 32 |
| 2024 | 28 | 35 |
| 2025 | 17 | 37 |
| 2026 | 17 | 31 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
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
- Abatement of effluent containing ammonium chloride8 Oct 2026US 2026/0307006 A1APPLIED Materials.Inc.
- Method for removing hydrogen fluoride24 Sep 2026US 2026/0284570 A1Resonac Corporation
- Comprehensive energy supply system with hydrogen production and prediction function and integrated with hydrogen energy storage by residual flue gas of gas engine24 Sep 2026US 2026/0286916 A1The Architectural Design & Research Institute of Zhejiang University Co., Ltd.
- Exhaust gas treatment apparatus and exhaust gas treatment method17 Sep 2026US 2026/0273464 A1Ebara Corporation
- Method for removing pfas comprised in waste10 Sep 2026US 2026/0263857 A1Sarp Industries
Most cited
By later US patents
- Fluorine abatement using steam injection in oxidation treatment of semiconductor manufacturing effluent gases210US 6,423,284 B1Advanced Technology Materials, Inc. · 2002
- 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
- Bulk gas sorption and apparatus, gas containment/treatment system comprising same, and sorbent composition therefor81US 5,151,395 ANovapure Corporation · 1992
- Process and system for separation and recovery of perfluorocompound gases73US 5,858,065 AAmerican Air Liquide, Inc. · 1999