B01J 2531/62
Chromium
B01J2531/62 (Chromium) appears on 463 US grants and 422 published applications in this corpus.
Search patents in B01J- Granted patents
- 463
- Published applications
- 422
- Assignees
- 201
- Inventors
- 1,018
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 6 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 2 | 0 |
| 1989 | 6 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 7 | 0 |
| 1995 | 4 | 0 |
| 1996 | 6 | 0 |
| 1997 | 2 | 0 |
| 1998 | 10 | 0 |
| 1999 | 5 | 0 |
| 2000 | 11 | 0 |
| 2001 | 5 | 2 |
| 2002 | 10 | 6 |
| 2003 | 8 | 13 |
| 2004 | 14 | 6 |
| 2005 | 8 | 17 |
| 2006 | 6 | 12 |
| 2007 | 10 | 17 |
| 2008 | 11 | 18 |
| 2009 | 10 | 16 |
| 2010 | 12 | 25 |
| 2011 | 12 | 21 |
| 2012 | 12 | 19 |
| 2013 | 9 | 15 |
| 2014 | 16 | 17 |
| 2015 | 19 | 16 |
| 2016 | 22 | 18 |
| 2017 | 20 | 31 |
| 2018 | 19 | 20 |
| 2019 | 29 | 27 |
| 2020 | 19 | 20 |
| 2021 | 20 | 12 |
| 2022 | 25 | 33 |
| 2023 | 16 | 12 |
| 2024 | 12 | 11 |
| 2025 | 8 | 13 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Catalyst composition for oligomerization reaction11 Aug 2026US 12,702,971 B2Sabic Global Technologies B.V.
- Process for preparing polypropylene carbonate30 Jun 2026US 12,668,661 B2ENI S. p. A.
- Atomically dispersed metal catalysts and applications thereof30 Dec 2025US 12,508,580 B2University of South Florida
- Catalysts for synthesizing cyclic carbonates, preparation methods and uses thereof23 Dec 2025US 12,502,661 B2Anhui Conch Material Technology Co., Ltd.
- Catalyst composition for cyclic carbonate production from CO2 and epoxides16 Dec 2025US 12,496,575 B2PTT Global Chemical Public Company Limited
- Bulky and small-steric-hindrance ligand and use thereof17 Sep 2026US 2026/0273518 A1Dg Hc Optical Co., Ltd
- Ligand Compound, Organic Chromium Compound, and Catalyst Compositions Containing the Same3 Sep 2026US 2026/0257213 A1LG Chem.Ltd.
- Ammonia synthesis catalyst, ammonia production device, and ammonia production method6 Aug 2026US 2026/0225088 A1Idemitsu Kosan Co., Ltd.
- Ethylene oligomerization method with reduced polymer generation and improved productivity6 Aug 2026US 2026/0225976 A1
- Catalyst composition for olefin oligomerization5 Mar 2026US 2026/0061408 A1Industrial Technology Research Institute
Most cited
By later US patents
- Polymerization of .alpha.-olefins with transition metal catalysts based on bidentate ligands containing pyridine or quinoline moiety209US 5,637,660 ALyondell Petrochemical Company · 1997
- Ethylene trimerization100US 5,811,618 AAmoco Corporation · 1998
- Olefin production93US 5,856,257 APhillips Petroleum Company · 1999
- Surface functionalized mesoporous material and method of making same91US 6,326,326 B1Battelle Memorial Institute · 2001
- Substituted aminomethylphosphines, compositions and coordination complexes of same, their synthesis and processes using same82US 6,043,363 ASymyx Technologies, Inc. · 2000