C07C 2521/12
Silica and alumina
C07C2521/12 (Silica and alumina) appears on 557 US grants and 329 published applications in this corpus.
Search patents in C07C- Granted patents
- 557
- Published applications
- 329
- Assignees
- 201
- Inventors
- 1,190
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 14 | 0 |
| 1977 | 15 | 0 |
| 1978 | 13 | 0 |
| 1979 | 10 | 0 |
| 1980 | 10 | 0 |
| 1981 | 13 | 0 |
| 1982 | 6 | 0 |
| 1983 | 7 | 0 |
| 1984 | 12 | 0 |
| 1985 | 17 | 0 |
| 1986 | 10 | 0 |
| 1987 | 10 | 0 |
| 1988 | 5 | 0 |
| 1989 | 14 | 0 |
| 1990 | 9 | 0 |
| 1991 | 16 | 0 |
| 1992 | 15 | 0 |
| 1993 | 8 | 0 |
| 1994 | 12 | 0 |
| 1995 | 7 | 0 |
| 1996 | 3 | 0 |
| 1997 | 6 | 0 |
| 1998 | 13 | 0 |
| 1999 | 14 | 0 |
| 2000 | 17 | 0 |
| 2001 | 4 | 2 |
| 2002 | 12 | 4 |
| 2003 | 14 | 9 |
| 2004 | 6 | 14 |
| 2005 | 5 | 5 |
| 2006 | 7 | 7 |
| 2007 | 6 | 9 |
| 2008 | 6 | 8 |
| 2009 | 6 | 11 |
| 2010 | 10 | 12 |
| 2011 | 10 | 13 |
| 2012 | 3 | 15 |
| 2013 | 7 | 18 |
| 2014 | 15 | 26 |
| 2015 | 21 | 19 |
| 2016 | 12 | 19 |
| 2017 | 19 | 15 |
| 2018 | 14 | 18 |
| 2019 | 23 | 22 |
| 2020 | 20 | 21 |
| 2021 | 20 | 14 |
| 2022 | 13 | 9 |
| 2023 | 9 | 6 |
| 2024 | 7 | 13 |
| 2025 | 7 | 6 |
| 2026 | 5 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process for converting oxygenates to distillate fuels18 Aug 2026US 12,709,587 B2Uop LLC
- Process and a system for enhancing the yield of light olefins2 Jun 2026US 12,643,839 B2Indian Oil Corporation Limited
- Catalytic assembly comprising a micrometric ferromagnetic material and use of said assembly for heterogeneous catalysis reactions21 Apr 2026US 12,605,698 B2Centre National De La Recherche Scientifique
- Method for producing propylene17 Mar 2026US 12,577,182 B2Sumitomo Checmical Company, Limited
- Process for converting olefins to distillate fuels6 Jan 2026US 12,516,003 B2Uop LLC
- Process for converting oxygenates to distillate fuels10 Sep 2026US 2026/0265163 A1Uop LLC
- Process for continuous hydrogenation of aqueous levulinic acid to gamma-valerolactone and its tandem conversion to high octane gasoline range hydrocarbons6 Aug 2026US 2026/0225081 A1Eco-Oil Miljobranslen I Sverige AB
- Methods for making light olefins by dehydrogenation that utilize comubustion additives that include transition metals9 Jul 2026US 2026/0193155 A1Dow Global Technologies LLC
- Biomass conversion to bio-jet over heterogeneous catalysts25 Jun 2026US 2026/0175204 A1ExxonMobil Technology and Engineering Company
- Process synthesizing sustainable aviation fuel compositions2 Apr 2026US 2026/0092023 A1Visolis, Inc.
Most cited
By later US patents
- Process for the preparation of middle distillates from syngas162US 4,594,468 AShell Oil Company · 1986
- Process of producing liquid hydrocarbon fuels from biomass118US 4,678,860 AArizona Board of Regents · 1987
- Layered metal chalcogenides containing interspathic polymeric chalcogenides75US 4,859,648 AMobil Oil Corporation · 1989
- Oligomerization of olefins to highly linear oligomers, and catalysts for this purpose62US 5,849,972 ABASF SE · 1998
- Hydrocarbon conversion process using a supported perfluorinated polymer catalyst61US 4,038,213 AShell Oil Company · 1977