B01J 20/284
Based on alumina
Official title: based on alumina
B01J20/284 (Based on alumina) appears on 71 US grants and 84 published applications in this corpus.
Search patents in B01J- Granted patents
- 71
- Published applications
- 84
- Assignees
- 59
- Inventors
- 191
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 1 |
| 2004 | 2 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 2 |
| 2007 | 2 | 2 |
| 2008 | 0 | 1 |
| 2009 | 0 | 4 |
| 2010 | 2 | 6 |
| 2011 | 1 | 0 |
| 2012 | 1 | 3 |
| 2013 | 1 | 9 |
| 2014 | 4 | 3 |
| 2015 | 3 | 6 |
| 2016 | 5 | 3 |
| 2017 | 2 | 3 |
| 2018 | 3 | 7 |
| 2019 | 6 | 4 |
| 2020 | 5 | 4 |
| 2021 | 4 | 6 |
| 2022 | 4 | 1 |
| 2023 | 4 | 10 |
| 2024 | 4 | 3 |
| 2025 | 4 | 3 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Lithium adsorbent and method for lithium extraction from salt lake12 May 2026US 12,623,201 B2BYD Company Limited
- Automatic separation apparatus for four fractions of heavy oil and separation method thereof10 Feb 2026US 12,544,690 B2Beijing Orienda Instruments Co., Ltd
- Process for recovering and reusing depolymerization catalyst16 Sep 2025US 12,415,179 B29449710 Canada Inc.
- Compositions and methods for the purification of isoprenoids15 Jul 2025US 12,358,856 B1Amyris, Inc.
- Columns and methods of use for analytical standards and compounds8 Apr 2025US 12,269,012 B2
- Compositions and methods for the purification of isoprenoids4 Dec 2025US 2025/0368590 A1Amyris, Inc.
- Adsorbent for trimethylbenzene-based compounds and preparation method thereof, and separation method and separation apparatus for trimethylbenzene-based compounds23 Oct 2025US 2025/0325955 A1China Petroleum & Chemical Corporation
- Simulated moving bed chromatography for lithium recovery from brines using aluminum-based adsorbents13 Feb 2025US 2025/0050313 A1Amalgamated Research, Inc.
- Process for recovering and reusing depolymerization catalyst21 Nov 2024US 2024/0382941 A19449710 Canada Inc.
- Chromatographic materials5 Sep 2024US 2024/0293799 A1Waters Technologies Corporation
Most cited
By later US patents
- High performance liquid chromatography method and apparatus193US 5,919,368 ACohesive Technologies, Inc. · 1999
- High performance liquid chromatography method and apparatus165US 5,772,874 ACohesive Technologies, Inc. · 1998
- Uniform oxide microspheres and a process for their manufacture65US 4,010,242 AE. I. DuPont de Nemours and Company · 1977
- Reticulated ceramic products60US 5,399,535 ARohm and Haas Company · 1995
- Method of preparing delta-9-tetrahydrocannabinol43US 6,730,519 B2The University of Mississippi · 2004