B01D 2255/20776
Tungsten
B01D2255/20776 (Tungsten) appears on 478 US grants and 602 published applications in this corpus.
Search patents in B01D- Granted patents
- 478
- Published applications
- 602
- Assignees
- 296
- Inventors
- 1,375
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 7 | 0 |
| 1999 | 7 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 1 |
| 2002 | 4 | 3 |
| 2003 | 4 | 4 |
| 2004 | 7 | 3 |
| 2005 | 2 | 6 |
| 2006 | 1 | 4 |
| 2007 | 1 | 12 |
| 2008 | 3 | 15 |
| 2009 | 7 | 37 |
| 2010 | 21 | 36 |
| 2011 | 15 | 43 |
| 2012 | 22 | 28 |
| 2013 | 32 | 37 |
| 2014 | 35 | 38 |
| 2015 | 28 | 45 |
| 2016 | 35 | 39 |
| 2017 | 32 | 29 |
| 2018 | 22 | 47 |
| 2019 | 34 | 41 |
| 2020 | 29 | 19 |
| 2021 | 23 | 19 |
| 2022 | 26 | 32 |
| 2023 | 18 | 26 |
| 2024 | 8 | 18 |
| 2025 | 17 | 15 |
| 2026 | 6 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Air purifier19 May 2026US 12,631,351 B2Sharp Kabushiki Kaisha
- Denitration catalyst and method for purifying exhaust gas14 Apr 2026US 12,599,872 B2Mitsubishi Heavy Industries, Ltd.
- Fiberglass filter element containing zinc oxide-based composite nanoparticles and method for producing the same14 Apr 2026US 12,600,661 B2Chongqing Institute of East China Normal University
- Methods for regenerating a filter medium and cleaning flue gas7 Apr 2026US 12,594,519 B2W. L. Gore & Associates, Inc.
- SCR catalyst having excellent sulfur tolerance24 Mar 2026US 12,582,973 B2Posco Holdings Inc.
- Method for producing oxidation/reduction catalyst utilizing sulfur element-containing precursor and oxidation/reduction catalyst produced thereby23 Jul 2026US 2026/0208179 A1Korea Institute of Industrial Technology
- Composite catalyst for hydrogen selective catalytic reduction, method of removing nitrogen oxides using the same, and air purification device including composite catalyst9 Jul 2026US 2026/0192248 A1Samsung Electronics Co., Ltd.
- Nh3-scr denitration system and method for synergistic purification of co21 May 2026US 2026/0138087 A1Institute of Process Engineering, Chinese Academy of Sciences
- Carbon monoxide catalyst and preparation method therefor and use thereof12 Mar 2026US 2026/0070044 A1University of Science and Technology Beijing
- Flue gas treatment device and design method of flue gas treatment device1 Jan 2026US 2026/0002460 A1Mitsubishi Heavy Industries, Ltd.
Most cited
By later US patents
- Catalytic process for reducing nitrogen oxides to nitrogen110US 4,085,193 ABabcock-Hitachi Kabushiki Kaisha · 1978
- Thermally regenerable nitric oxide adsorbent90US 8,105,559 B2Johnson Matthey Public Limited Company · 2012
- Bulk gas sorption and apparatus, gas containment/treatment system comprising same, and sorbent composition therefor81US 5,151,395 ANovapure Corporation · 1992
- Engine exhaust catalysts containing palladium-gold79US 7,709,414 B2Nanostellar, Inc. · 2010
- High temperature catalyst and process for selective catalytic reduction of NOx in exhaust gases of fossil fuel combustion78US 7,695,703 B2Siemens Energy, Inc. · 2010