B01J 35/31
Density
B01J35/31 (Density) appears on 416 US grants and 444 published applications in this corpus.
Search patents in B01J- Granted patents
- 416
- Published applications
- 444
- Assignees
- 244
- Inventors
- 1,403
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 7 | 0 |
| 1986 | 4 | 0 |
| 1987 | 10 | 0 |
| 1988 | 13 | 0 |
| 1989 | 20 | 0 |
| 1990 | 6 | 0 |
| 1991 | 10 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 6 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 9 | 0 |
| 2001 | 7 | 0 |
| 2002 | 6 | 5 |
| 2003 | 8 | 17 |
| 2004 | 6 | 14 |
| 2005 | 8 | 9 |
| 2006 | 4 | 9 |
| 2007 | 4 | 5 |
| 2008 | 2 | 11 |
| 2009 | 8 | 7 |
| 2010 | 7 | 16 |
| 2011 | 6 | 14 |
| 2012 | 11 | 11 |
| 2013 | 8 | 29 |
| 2014 | 12 | 11 |
| 2015 | 13 | 17 |
| 2016 | 19 | 24 |
| 2017 | 16 | 19 |
| 2018 | 16 | 23 |
| 2019 | 20 | 36 |
| 2020 | 18 | 21 |
| 2021 | 23 | 26 |
| 2022 | 16 | 28 |
| 2023 | 17 | 27 |
| 2024 | 14 | 27 |
| 2025 | 18 | 25 |
| 2026 | 14 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Alumina support6 Oct 2026US 12,752,257 B2Kaneka Corporation
- Catalyst compositions and processes for making and using same6 Oct 2026US 12,752,258 B2ExxonMobil Chemical Patents Inc.
- Composite catalyst, method for producing composite catalyst, and method for producing lower olefins29 Sep 2026US 12,746,536 B2Chiyoda Corporation
- Catalyst medium comprising hollow microspheres22 Sep 2026US 12,741,267 B2Axens
- Dual reactor system for simultaneous decontamination and cracking of plastic derived oil to circular chemicals22 Sep 2026US 12,742,125 B2Saudi Arabian Oil Company
- Copper silicate-based catalyst and manufacturing method therefor10 Sep 2026US 2026/0264060 A1LG Chem.Ltd.
- Shaped catalyst body27 Aug 2026US 2026/0249277 A1BASF SE
- Staged pyrolysis-catalytic gasification process systems for hydrogen production from biomass waste20 Aug 2026US 2026/0242679 A1Changzhou University
- Preparation method for hydropyrolysis catalyst with higher density; biomass hydropyrolysis process using obtained catalyst30 Jul 2026US 2026/0216709 A1Shell USA, Inc.
- Hydropyrolysis catalyst23 Jul 2026US 2026/0208168 A1Shell USA, Inc.
Most cited
By later US patents
- Alkylene oxide catalysts containing high silver content168US 5,187,140 AUnion Carbide Chemicals & Plastics Technology Corporation · 1993
- Hydrotreating hydrocarbon feeds112US 6,203,695 B1Institut Francais du Petrole · 2001
- Shaped hydrogenation catalyst and processes for their preparation and use93US 6,049,008 AEngelhard Corporation · 2000
- Process for treating heavy oil85US 5,374,350 AMobil Oil Corporation · 1994
- Inorganic oxide aerogels and their preparation76US 4,717,708 AStauffer Chemical Company · 1988