B01J 23/888
Tungsten
B01J23/888 (Tungsten) appears on 748 US grants and 737 published applications in this corpus.
Search patents in B01J- Granted patents
- 748
- Published applications
- 737
- Assignees
- 302
- Inventors
- 1,874
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 9 | 0 |
| 1978 | 12 | 0 |
| 1979 | 6 | 0 |
| 1980 | 2 | 0 |
| 1981 | 9 | 0 |
| 1982 | 9 | 0 |
| 1983 | 5 | 0 |
| 1984 | 11 | 0 |
| 1985 | 12 | 0 |
| 1986 | 5 | 0 |
| 1987 | 2 | 0 |
| 1988 | 8 | 0 |
| 1989 | 6 | 0 |
| 1990 | 7 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 5 | 0 |
| 1997 | 5 | 0 |
| 1998 | 7 | 0 |
| 1999 | 5 | 0 |
| 2000 | 10 | 0 |
| 2001 | 12 | 5 |
| 2002 | 11 | 17 |
| 2003 | 17 | 16 |
| 2004 | 14 | 25 |
| 2005 | 10 | 29 |
| 2006 | 14 | 18 |
| 2007 | 11 | 19 |
| 2008 | 14 | 22 |
| 2009 | 19 | 37 |
| 2010 | 30 | 46 |
| 2011 | 30 | 38 |
| 2012 | 22 | 46 |
| 2013 | 36 | 51 |
| 2014 | 46 | 42 |
| 2015 | 35 | 40 |
| 2016 | 43 | 41 |
| 2017 | 33 | 30 |
| 2018 | 30 | 30 |
| 2019 | 32 | 41 |
| 2020 | 28 | 25 |
| 2021 | 29 | 22 |
| 2022 | 17 | 29 |
| 2023 | 19 | 28 |
| 2024 | 15 | 14 |
| 2025 | 11 | 11 |
| 2026 | 7 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method of preparing a hydrocracking catalyst29 Sep 2026US 12,746,535 B2Shell USA, Inc.
- Method for producing acrylic acid18 Aug 2026US 12,709,591 B2Nippon Shokubai Co., Ltd.
- Catalyst28 Jul 2026US 12,691,438 B2Mitsubishi Chemical Corporation
- Production method for chemical products and carbides7 Jul 2026US 12,673,872 B2Bridgestone Corporation
- Methods for preparing diol21 Apr 2026US 12,606,506 B2Changchun Meihe Science and Technology Development Co., Ltd.
- Reactors for the decomposition of nh3 at high temperatures24 Sep 2026US 2026/0284643 A1thyssenkrupp AG
- Catalyst for producing unsaturated carboxylic acid17 Sep 2026US 2026/0273513 A1Nippon Kayaku Kabushiki Kaisha
- Zeolite-y and catalyst comprising zeolite-y10 Sep 2026US 2026/0264067 A1Zeopore Technologies NV
- Heterogeneous catalyst with dual catalytic centers, and preparation method and use thereof27 Aug 2026US 2026/0249279 A1China Petroleum & Chemical Corporation
- Catalyst, method for producing catalyst, and method for producing acrylonitrile20 Aug 2026US 2026/0241372 A1Asahi Kasei Kabushiki Kaisha
Most cited
By later US patents
- Method of producing carbon nanotubes254US 6,333,016 B1The Board of Regents of the University of Oklahoma · 2001
- Hydroprocessing using bulk Group VIII/Group VIB catalysts (HEN-9901)250US 6,162,350 AExxon Research & Engineering Co. · 2000
- Slurry hydroprocessing using bulk multimetallic catalysts185US 6,712,955 B1ExxonMobil Research and Engineering Company · 2004
- Hydroconversion process using bulk group VIII/Group VIB catalysts175US 6,620,313 B1ExxonMobil Research and Engineering Company · 2003
- Mixed metal catalyst, its preparation by co-precipitation, and its use150US 6,635,599 B1ExxonMobil Research and Engineering Company · 2003