B01D 2257/2047
Hydrofluoric acid
B01D2257/2047 (Hydrofluoric acid) appears on 175 US grants and 267 published applications in this corpus.
Search patents in B01D- Granted patents
- 175
- Published applications
- 267
- Assignees
- 163
- Inventors
- 656
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 2 | 2 |
| 2003 | 2 | 5 |
| 2004 | 3 | 5 |
| 2005 | 0 | 4 |
| 2006 | 2 | 2 |
| 2007 | 3 | 4 |
| 2008 | 1 | 4 |
| 2009 | 1 | 8 |
| 2010 | 2 | 13 |
| 2011 | 5 | 11 |
| 2012 | 4 | 13 |
| 2013 | 10 | 22 |
| 2014 | 13 | 14 |
| 2015 | 15 | 14 |
| 2016 | 16 | 21 |
| 2017 | 12 | 12 |
| 2018 | 10 | 21 |
| 2019 | 11 | 16 |
| 2020 | 12 | 10 |
| 2021 | 8 | 10 |
| 2022 | 9 | 12 |
| 2023 | 7 | 8 |
| 2024 | 7 | 14 |
| 2025 | 5 | 9 |
| 2026 | 5 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Carbon dioxide capture device and method16 Jun 2026US 12,654,124 B2Enviro Ambient Corporation
- Catalyst for decomposing perfluorinated compounds and method of manufacturing the catalyst16 Jun 2026US 12,654,155 B2Korea Advanced Institute of Science and Technology
- Thermo-chemical transformation of wet food waste with plastics, biodegradable packaging, and fluorinated compounds in a multi-annular concentric feed rotary kiln system2 Jun 2026US 12,644,061 B1Simple Approach Systems, Inc.
- Gas processing apparatus and substrate processing apparatus24 Mar 2026US 12,582,942 B2Tokyo Electron Limited
- Fluoride ion cleaning systems and methods including post-retort fluid stream processing10 Feb 2026US 12,546,015 B2GE Infrastructure Technology LLC
- Method for removing hydrogen fluoride24 Sep 2026US 2026/0284570 A1Resonac Corporation
- Method for removing pfas comprised in waste10 Sep 2026US 2026/0263857 A1Sarp Industries
- 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.
- Advanced membrane oxidation process and system for the treatment of industrial gas emissions and odors23 Jul 2026US 2026/0208099 A1
Most cited
By later US patents
- 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
- Service life indicator for respirator cartridge51US 6,497,756 B1North Safety Products, Inc. · 2002
- Recovering of xenon by adsorption process50US 8,535,414 B2Air Products and Chemicals, Inc. · 2013