C07C 2521/04
Alumina
C07C2521/04 (Alumina) appears on 1,804 US grants and 1,260 published applications in this corpus.
Search patents in C07C- Granted patents
- 1,804
- Published applications
- 1,260
- Assignees
- 558
- Inventors
- 3,653
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 39 | 0 |
| 1977 | 75 | 0 |
| 1978 | 51 | 0 |
| 1979 | 42 | 0 |
| 1980 | 45 | 0 |
| 1981 | 41 | 0 |
| 1982 | 26 | 0 |
| 1983 | 23 | 0 |
| 1984 | 31 | 0 |
| 1985 | 28 | 0 |
| 1986 | 29 | 0 |
| 1987 | 30 | 0 |
| 1988 | 29 | 0 |
| 1989 | 25 | 0 |
| 1990 | 26 | 0 |
| 1991 | 46 | 0 |
| 1992 | 33 | 0 |
| 1993 | 21 | 0 |
| 1994 | 25 | 0 |
| 1995 | 21 | 0 |
| 1996 | 19 | 0 |
| 1997 | 24 | 0 |
| 1998 | 34 | 0 |
| 1999 | 34 | 0 |
| 2000 | 38 | 0 |
| 2001 | 35 | 13 |
| 2002 | 40 | 31 |
| 2003 | 35 | 35 |
| 2004 | 22 | 35 |
| 2005 | 18 | 37 |
| 2006 | 15 | 21 |
| 2007 | 20 | 36 |
| 2008 | 20 | 35 |
| 2009 | 26 | 24 |
| 2010 | 22 | 41 |
| 2011 | 20 | 40 |
| 2012 | 19 | 48 |
| 2013 | 27 | 54 |
| 2014 | 44 | 75 |
| 2015 | 61 | 75 |
| 2016 | 48 | 67 |
| 2017 | 55 | 65 |
| 2018 | 62 | 62 |
| 2019 | 51 | 74 |
| 2020 | 64 | 70 |
| 2021 | 59 | 67 |
| 2022 | 53 | 57 |
| 2023 | 49 | 61 |
| 2024 | 44 | 59 |
| 2025 | 38 | 44 |
| 2026 | 22 | 34 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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.
- Internal olefin production method18 Aug 2026US 12,709,588 B2Kao Corporation
- Catalyst for hydrogenation reaction and manufacturing method therefor14 Jul 2026US 12,678,774 B2Korea Advanced Institute of Science and Technology
- Method for producing motor fuel from ethanol30 Jun 2026US 12,668,750 B2
- 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
- Method for producing motor fuel from ethanol17 Sep 2026US 2026/0275211 A1Swedish Biofuels AB
- Improved method for dehydrogenating hydrocarbons20 Aug 2026US 2026/0242310 A1Arkema France
- Catalyst Compositions and Processes for Making and Using Same13 Aug 2026US 2026/0233203 A1
Most cited
By later US patents
- Process for the manufacture of gasoline304US 4,076,761 AMobil Oil Corporation · 1978
- Conversion of synthesis gas to diesel fuel and gasoline292US 4,605,680 AChevron Research Company · 1986
- Alkylation in presence of thermally modified crystalline aluminosilicate catalyst276US 4,016,218 AMobil Oil Corporation · 1977
- Process for the preparation of middle distillates from syngas162US 4,594,468 AShell Oil Company · 1986
- Manufacture of synthetic lubricant additives from low molecular weight olefins using boron trifluoride catalysts123US 4,413,156 ATexaco Inc. · 1983