C07C 2523/20
Vanadium, niobium or tantalum
C07C2523/20 (Vanadium, niobium or tantalum) appears on 327 US grants and 288 published applications in this corpus.
Search patents in C07C- Granted patents
- 327
- Published applications
- 288
- Assignees
- 181
- Inventors
- 757
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 4 | 0 |
| 1981 | 4 | 0 |
| 1982 | 4 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 6 | 0 |
| 1986 | 10 | 0 |
| 1987 | 6 | 0 |
| 1988 | 6 | 0 |
| 1989 | 8 | 0 |
| 1990 | 5 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 7 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 11 | 0 |
| 2000 | 5 | 0 |
| 2001 | 7 | 0 |
| 2002 | 3 | 3 |
| 2003 | 5 | 6 |
| 2004 | 1 | 1 |
| 2005 | 2 | 5 |
| 2006 | 1 | 2 |
| 2007 | 1 | 10 |
| 2008 | 3 | 5 |
| 2009 | 4 | 5 |
| 2010 | 4 | 10 |
| 2011 | 0 | 7 |
| 2012 | 3 | 18 |
| 2013 | 7 | 16 |
| 2014 | 16 | 15 |
| 2015 | 17 | 21 |
| 2016 | 8 | 11 |
| 2017 | 12 | 17 |
| 2018 | 16 | 19 |
| 2019 | 18 | 24 |
| 2020 | 14 | 19 |
| 2021 | 21 | 12 |
| 2022 | 11 | 19 |
| 2023 | 18 | 9 |
| 2024 | 11 | 20 |
| 2025 | 9 | 10 |
| 2026 | 8 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Molybdenum-vanadium-iron- and/or molybdenum-vanadium-aluminium-based oxidative dehydrogenation catalyst materials18 Aug 2026US 12,708,893 B2NOVA Chemicals (International) S.A.
- Molybdenum-vanadium-iron- and/or molybdenum-vanadium-aluminium-based oxidative dehydrogenation catalyst materials18 Aug 2026US 12,708,894 B2NOVA Chemicals (International) S.A.
- Feed purification in ethane ODH process16 Jun 2026US 12,655,079 B2NOVA Chemicals (International) S.A.
- Oxygen removal from an ethane ODH product stream using ethanol2 Jun 2026US 12,643,841 B2NOVA Chemicals (International) S.A.
- Process for the dehydrogenation of ethanol in a multitubular reactor17 Mar 2026US 12,577,187 B2Compagnie Generale Des Etablissements Michelin
- Feed purification in ethane odh process17 Sep 2026US 2026/0274772 A1NOVA Chemicals (International) S.A.
- V2c@v2o5/tio2 composite photocatalyst, preparation method, and application thereof28 May 2026US 2026/0145160 A1United Arab Emirates University
- Tantalum catalyst composition and method of using the same30 Apr 2026US 2026/0115700 A1Battelle Memorial Institute
- Hydrodeoxygenation catalyst and preparation method thereof1 Jan 2026US 2026/0001060 A1The Boeing Company
- Methods of making light olefins that include modifying catalysts4 Dec 2025US 2025/0368901 A1Dow Global Technologies LLC
Most cited
By later US patents
- Process for upgrading light hydrocarbons using oxidative coupling and pyrolysis81US 5,012,028 AThe Standard Oil Company · 1991
- Raney nickel alloy expanded mesh hydrogenation catalysts77US 4,513,149 AOlin Corporation · 1985
- Conversion of a lower alkane73US 4,814,539 AAmoco Corporation · 1989
- Ion transport membranes with catalyzed mixed conducting porous layer73US 5,534,471 AAir Products and Chemicals, Inc. · 1996
- Oxidation of methane over heterogeneous catalysts69US 5,336,826 AThe British Petroleum Company p.l.c. · 1994