C07C 2521/06
Silicon, titanium, zirconium or hafnium
Official title: Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
C07C2521/06 (Silicon, titanium, zirconium or hafnium) appears on 1,653 US grants and 1,211 published applications in this corpus.
Search patents in C07C- Granted patents
- 1,653
- Published applications
- 1,211
- Assignees
- 559
- Inventors
- 3,570
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 19 | 0 |
| 1977 | 28 | 0 |
| 1978 | 16 | 0 |
| 1979 | 14 | 0 |
| 1980 | 15 | 0 |
| 1981 | 28 | 0 |
| 1982 | 7 | 0 |
| 1983 | 27 | 0 |
| 1984 | 31 | 0 |
| 1985 | 39 | 0 |
| 1986 | 42 | 0 |
| 1987 | 36 | 0 |
| 1988 | 40 | 0 |
| 1989 | 30 | 0 |
| 1990 | 32 | 0 |
| 1991 | 42 | 0 |
| 1992 | 39 | 0 |
| 1993 | 27 | 0 |
| 1994 | 28 | 0 |
| 1995 | 25 | 0 |
| 1996 | 28 | 0 |
| 1997 | 25 | 0 |
| 1998 | 33 | 0 |
| 1999 | 32 | 0 |
| 2000 | 33 | 0 |
| 2001 | 25 | 7 |
| 2002 | 30 | 24 |
| 2003 | 35 | 31 |
| 2004 | 25 | 36 |
| 2005 | 15 | 32 |
| 2006 | 18 | 19 |
| 2007 | 18 | 30 |
| 2008 | 19 | 23 |
| 2009 | 18 | 25 |
| 2010 | 22 | 40 |
| 2011 | 23 | 44 |
| 2012 | 21 | 62 |
| 2013 | 30 | 50 |
| 2014 | 36 | 76 |
| 2015 | 58 | 64 |
| 2016 | 45 | 69 |
| 2017 | 60 | 65 |
| 2018 | 57 | 75 |
| 2019 | 77 | 65 |
| 2020 | 63 | 71 |
| 2021 | 58 | 74 |
| 2022 | 55 | 60 |
| 2023 | 51 | 47 |
| 2024 | 32 | 44 |
| 2025 | 27 | 38 |
| 2026 | 19 | 40 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
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.
- Process for producing methane23 Jun 2026US 12,662,433 B2Bp P.L.C.
- Reaction apparatus and production process for olefin production16 Jun 2026US 12,655,076 B2Sogang University Research & Business Development Foundation
- Nanocomposite material comprising bio-sludge or biochar, method for its preparation and application in photocatalytic CO2 reduction26 May 2026US 12,636,639 B2United Arab Emirates University
- Process and plant for producing synthetic paraffinic kerosene as jet fuel1 Oct 2026US 2026/0296992 A1Topsoe A/S
- 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
- Nanocomposite material comprising bio-sludge or biochar, method for its preparation and application in photocatalytic co2 reduction3 Sep 2026US 2026/0257201 A1United Arab Emirates University
- Isomerization and disproportionation catalyst composition3 Sep 2026US 2026/0257203 A1Shell Oil Company
Most cited
By later US patents
- Conversion of synthesis gas to diesel fuel and gasoline292US 4,605,680 AChevron Research Company · 1986
- 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
- Cobalt catalysts for the conversion of methanol to hydrocarbons and for Fischer-Tropsch synthesis140US 4,568,663 AExxon Research & Engineering Co. · 1986
- Low-temperature hydrocarbon production from oxygenated hydrocarbons123US 6,953,873 B2Wisconsin Alumni Research Foundation · 2005