C07C 2521/08
Silica
C07C2521/08 (Silica) appears on 1,066 US grants and 765 published applications in this corpus.
Search patents in C07C- Granted patents
- 1,066
- Published applications
- 765
- Assignees
- 379
- Inventors
- 2,389
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 17 | 0 |
| 1978 | 10 | 0 |
| 1979 | 11 | 0 |
| 1980 | 10 | 0 |
| 1981 | 23 | 0 |
| 1982 | 5 | 0 |
| 1983 | 22 | 0 |
| 1984 | 27 | 0 |
| 1985 | 21 | 0 |
| 1986 | 28 | 0 |
| 1987 | 24 | 0 |
| 1988 | 23 | 0 |
| 1989 | 20 | 0 |
| 1990 | 21 | 0 |
| 1991 | 28 | 0 |
| 1992 | 30 | 0 |
| 1993 | 15 | 0 |
| 1994 | 20 | 0 |
| 1995 | 16 | 0 |
| 1996 | 14 | 0 |
| 1997 | 14 | 0 |
| 1998 | 21 | 0 |
| 1999 | 25 | 0 |
| 2000 | 19 | 0 |
| 2001 | 12 | 5 |
| 2002 | 21 | 16 |
| 2003 | 25 | 19 |
| 2004 | 11 | 17 |
| 2005 | 10 | 20 |
| 2006 | 9 | 6 |
| 2007 | 8 | 19 |
| 2008 | 12 | 14 |
| 2009 | 8 | 15 |
| 2010 | 13 | 27 |
| 2011 | 14 | 33 |
| 2012 | 14 | 43 |
| 2013 | 21 | 30 |
| 2014 | 22 | 49 |
| 2015 | 40 | 41 |
| 2016 | 29 | 45 |
| 2017 | 35 | 45 |
| 2018 | 39 | 56 |
| 2019 | 51 | 47 |
| 2020 | 42 | 49 |
| 2021 | 42 | 46 |
| 2022 | 35 | 30 |
| 2023 | 34 | 24 |
| 2024 | 21 | 26 |
| 2025 | 12 | 22 |
| 2026 | 9 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- 1,3-butadiene synthesis catalyst, method for producing same, and method for producing 1,3-butadiene7 Jul 2026US 12,673,318 B2Toyo Tire Corporation
- Catalysts and methods for methane dehydrogenation30 Jun 2026US 12,668,556 B2Chevron U.S.A.Inc.
- Reaction apparatus and production process for olefin production16 Jun 2026US 12,655,076 B2Sogang University Research & Business Development Foundation
- Hydrocarbon production system, and production method and operation method thereof19 May 2026US 12,630,488 B2Osaka Gas Co., Ltd.
- Direct catalytic conversion of alcohols to olefins of higher carbon number with reduced ethylene production14 Apr 2026US 12,599,897 B2UT-Battelle, LLC
- Methods for making light olefins by dehydrogenation using catalysts that include manganese17 Sep 2026US 2026/0274771 A1Dow Global Technologies LLC
- 1,3-butadiene synthesis catalyst, method for producing same, and method for producing 1,3-butadiene10 Sep 2026US 2026/0264068 A1Toyo Tire Corporation
- Catalytic process using ammonia as hydrogen source for carbon dioxide conversion13 Aug 2026US 2026/0233183 A1Agency for Science, Technology and Research
- Oxidative coupling catalyst, method for producing oxidative coupling catalyst, and method for producing hydrocarbons6 Aug 2026US 2026/0225078 A1Mitsubishi Heavy Industries, Ltd.
- Process for catalytic cracking of light hydrocarbons to reduce acetylene formation16 Jul 2026US 2026/0200815 A1
Most cited
By later US patents
- Process for the preparation of a Fischer-Tropsch catalyst and preparation of hydrocarbons from syngas250US 4,499,209 AShell Oil Company · 1985
- Process for the preparation of middle distillates from syngas162US 4,594,468 AShell Oil Company · 1986
- Low-temperature hydrocarbon production from oxygenated hydrocarbons123US 6,953,873 B2Wisconsin Alumni Research Foundation · 2005
- Process for manufacturing olefins116US 4,025,575 AMobil Oil Corporation · 1977
- Temperature regulating reactor apparatus and method102US 5,080,872 AAmoco Corporation · 1992