C07C 2523/30
Tungsten
C07C2523/30 (Tungsten) appears on 404 US grants and 363 published applications in this corpus.
Search patents in C07C- Granted patents
- 404
- Published applications
- 363
- Assignees
- 188
- Inventors
- 928
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 5 | 0 |
| 1978 | 6 | 0 |
| 1979 | 5 | 0 |
| 1980 | 7 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 5 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 7 | 0 |
| 1987 | 3 | 0 |
| 1988 | 5 | 0 |
| 1989 | 9 | 0 |
| 1990 | 4 | 0 |
| 1991 | 5 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 7 | 0 |
| 1995 | 5 | 0 |
| 1996 | 7 | 0 |
| 1997 | 3 | 0 |
| 1998 | 6 | 0 |
| 1999 | 4 | 0 |
| 2000 | 3 | 0 |
| 2001 | 9 | 1 |
| 2002 | 6 | 8 |
| 2003 | 14 | 9 |
| 2004 | 6 | 11 |
| 2005 | 2 | 10 |
| 2006 | 6 | 5 |
| 2007 | 3 | 10 |
| 2008 | 3 | 9 |
| 2009 | 6 | 10 |
| 2010 | 10 | 23 |
| 2011 | 8 | 15 |
| 2012 | 8 | 18 |
| 2013 | 11 | 19 |
| 2014 | 10 | 23 |
| 2015 | 19 | 20 |
| 2016 | 12 | 25 |
| 2017 | 14 | 26 |
| 2018 | 27 | 26 |
| 2019 | 31 | 17 |
| 2020 | 15 | 27 |
| 2021 | 19 | 13 |
| 2022 | 16 | 11 |
| 2023 | 8 | 9 |
| 2024 | 11 | 7 |
| 2025 | 5 | 4 |
| 2026 | 5 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Catalysts and processes for oxidative dehydrogenation of methane and ethane to produce ethylene, ethane, propane, propylene, and other products1 Sep 2026US 12,723,011 B1
- Olefin production device and olefin production method23 Jun 2026US 12,662,435 B2Mitsubishi Heavy Industries, Ltd.
- Catalysts and processes for oxidative dehydrogenation of methane and ethane to produce ethylene, ethane, propane, propylene, and other products28 Apr 2026US 12,612,345 B1
- Method for increasing propylene oxide output of an integrated process for making propylene oxide and propylene glycol17 Mar 2026US 12,577,218 B2Evonik Operations GmbH
- Method for preparing single-atom, atomic cluster or single-molecular catalyst for oxidative coupling of methane using chemical vapor deposition10 Feb 2026US 12,544,749 B2Korea Institute of Energy Research
- Oxidative coupling of methane in hysteresis condition8 Oct 2026US 2026/0308085 A1Braskem S/A
- Oxidative coupling catalyst, method for producing oxidative coupling catalyst, and method for producing hydrocarbons6 Aug 2026US 2026/0225078 A1Mitsubishi Heavy Industries, Ltd.
- Multi-reactor systems and methods for propylene production16 Jul 2026US 2026/0200816 A1Sabic Global Technologies B.V.
- Solid acid catalyst and preparation and use thereof16 Apr 2026US 2026/0103644 A1China Petroleum & Chemical Corporation
- Methods for cracking polyolefins using unsupported acidic polyoxometalates26 Mar 2026US 2026/0085022 A1University of Kansas
Most cited
By later US patents
- Manufacture of synthetic lubricant additives from low molecular weight olefins using boron trifluoride catalysts123US 4,413,156 ATexaco Inc. · 1983
- Processing C4 olefin streams for the maximum production of propylene95US 7,214,841 B2ABB Lummus Global Inc. · 2007
- Conversion of methane to C4+ aliphatic products in high yields using an integrated recycle reactor system82US 6,596,912 B1The Texas A&M University System · 2003
- Process for upgrading light hydrocarbons using oxidative coupling and pyrolysis81US 5,012,028 AThe Standard Oil Company · 1991
- Integrated propylene production70US 8,153,851 B2Lummus Technology Inc. · 2012