B01J 21/04
Alumina
B01J21/04 (Alumina) appears on 2,730 US grants and 3,247 published applications in this corpus.
Search patents in B01J- Granted patents
- 2,730
- Published applications
- 3,247
- Assignees
- 1,135
- Inventors
- 7,789
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 28 | 0 |
| 1977 | 25 | 0 |
| 1978 | 25 | 0 |
| 1979 | 15 | 0 |
| 1980 | 17 | 0 |
| 1981 | 22 | 0 |
| 1982 | 9 | 0 |
| 1983 | 18 | 0 |
| 1984 | 11 | 0 |
| 1985 | 22 | 0 |
| 1986 | 15 | 0 |
| 1987 | 9 | 0 |
| 1988 | 9 | 0 |
| 1989 | 14 | 0 |
| 1990 | 18 | 0 |
| 1991 | 13 | 0 |
| 1992 | 14 | 0 |
| 1993 | 13 | 0 |
| 1994 | 12 | 0 |
| 1995 | 13 | 0 |
| 1996 | 12 | 0 |
| 1997 | 7 | 0 |
| 1998 | 22 | 0 |
| 1999 | 20 | 0 |
| 2000 | 33 | 0 |
| 2001 | 42 | 9 |
| 2002 | 17 | 26 |
| 2003 | 37 | 60 |
| 2004 | 40 | 77 |
| 2005 | 32 | 70 |
| 2006 | 28 | 55 |
| 2007 | 34 | 55 |
| 2008 | 31 | 65 |
| 2009 | 47 | 89 |
| 2010 | 46 | 72 |
| 2011 | 41 | 79 |
| 2012 | 51 | 97 |
| 2013 | 79 | 127 |
| 2014 | 73 | 124 |
| 2015 | 102 | 146 |
| 2016 | 126 | 124 |
| 2017 | 122 | 147 |
| 2018 | 118 | 176 |
| 2019 | 143 | 204 |
| 2020 | 173 | 199 |
| 2021 | 171 | 242 |
| 2022 | 173 | 231 |
| 2023 | 153 | 254 |
| 2024 | 170 | 215 |
| 2025 | 153 | 160 |
| 2026 | 112 | 144 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Alumina support6 Oct 2026US 12,752,257 B2Kaneka Corporation
- Catalysts for cargen, methods of preparing, and uses of same6 Oct 2026US 12,752,259 B2Qatar Foundation for Education, Science and Community Development
- System for preparing isotope-labeled carbon dioxide and method therefor6 Oct 2026US 12,753,080 B2Institute of Process Engineering, Chinese Academy of Sciences
- Catalytic hydrogenation of fluoroolefins, alpha-alumina supported palladium compositions and their use as hydrogenation catalysts6 Oct 2026US 12,753,136 B2The Chemours Company Fc, LLC
- Repurposing fluidized catalytic cracking (FCC) systems to generate renewable fuel intermediate compositions6 Oct 2026US 12,753,350 B2Chevron U.S.A.Inc.
- Highly dispersed metal carbonate catalysts8 Oct 2026US 2026/0307063 A1BASF SE
- Selective hydrodechlorination of liquid and gas streams from plastics pyrolysis processes8 Oct 2026US 2026/0308088 A1BASF SE
- Reactor system and method thereof for degassing sulfur1 Oct 2026US 2026/0296887 A1Fluor Technologies Corporation
- Systems, methods, and catalysts for syngas, chemical, and fuel production24 Sep 2026US 2026/0284639 A1Dimensional Energy, Inc.
- Tri-metallic catalyst for ammonia cracking, preparation method therefor, and production method for hydrogen using same24 Sep 2026US 2026/0284640 A1Heesung Catalysts Corporation
Most cited
By later US patents
- Compositions that can produce polymers334US 6,300,271 B1Phillips Petroleum Company · 2001
- Titania-alumina supported palladium catalyst316US 8,507,720 B2Lyondell Chemical Technology, L,P. · 2013
- Organometal compound catalyst286US 6,391,816 B1Phillips Petroleum Company · 2002
- Organometal catalyst compositions285US 6,548,441 B1Phillips Petroleum Company · 2003
- Compositions that can produce polymers252US 7,601,665 B2Chevron Phillips Chemical Company LP · 2009