B01J 2231/643
Of r2c=o or r2c=nr
Official title: of R2C=O or R2C=NR (R= C, H)
B01J2231/643 (Of r2c=o or r2c=nr) appears on 364 US grants and 322 published applications in this corpus.
Search patents in B01J- Granted patents
- 364
- Published applications
- 322
- Assignees
- 218
- Inventors
- 895
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 6 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 9 | 0 |
| 1994 | 6 | 0 |
| 1995 | 7 | 0 |
| 1996 | 11 | 0 |
| 1997 | 9 | 0 |
| 1998 | 8 | 0 |
| 1999 | 9 | 0 |
| 2000 | 6 | 0 |
| 2001 | 15 | 6 |
| 2002 | 5 | 9 |
| 2003 | 15 | 18 |
| 2004 | 15 | 24 |
| 2005 | 9 | 15 |
| 2006 | 8 | 9 |
| 2007 | 10 | 9 |
| 2008 | 4 | 12 |
| 2009 | 8 | 11 |
| 2010 | 9 | 23 |
| 2011 | 5 | 13 |
| 2012 | 11 | 8 |
| 2013 | 14 | 15 |
| 2014 | 12 | 13 |
| 2015 | 19 | 18 |
| 2016 | 19 | 25 |
| 2017 | 14 | 11 |
| 2018 | 11 | 17 |
| 2019 | 17 | 12 |
| 2020 | 9 | 7 |
| 2021 | 6 | 11 |
| 2022 | 7 | 9 |
| 2023 | 5 | 12 |
| 2024 | 12 | 8 |
| 2025 | 6 | 4 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Production of 2,2,4,4-tetramethylcyclobutane-1,3-diol from isobutanol using a homogeneous catalyst17 Mar 2026US 12,577,184 B2Eastman Chemical Company
- Method for preparing chiral 4-aryl-β-amino acid derivative27 Jan 2026US 12,534,427 B2Zhejiang Medicine Co., Ltd.Xinchang Pharmaceutical Factory
- Enantioselective process30 Dec 2025US 12,509,417 B2Syngenta Crop Protection AG
- Hydrogenation of imines with RU complexes14 Oct 2025US 12,441,700 B2Firmenichi SA
- Catalyst for producing isopropylbenzene and the production method and use thereof15 Jul 2025US 12,357,975 B2China Petroleum & Chemical Corporation
- Biocatalytic synthesis of (1s,3s)-3-hydroxycyclohexane-1-carboxylic acid compounds3 Sep 2026US 2026/0258454 A1Bristol-Myers Squibb Company
- Process for preparing alpha,beta-unsaturated carbonyl compound16 Jul 2026US 2026/0200822 A1Firmenich SA
- Catalytic reaction method, method for producing organic compound, and catalyst composition1 Jan 2026US 2026/0001067 A1Nitto Denko Corporation
- Methods and intermediates for preparing antiviral prodrugs1 May 2025US 2025/0136603 A1Gilead Sciences, Inc.
- Methods and systems for modifying selectivity in catalytic reactions13 Mar 2025US 2025/0083136 A1Duke University
Most cited
By later US patents
- Vinly-substituted bridged metallocenes111US 5,565,592 APhillips Petroleum Company · 1996
- Metallocenes and processes therefor and therewith66US 5,466,766 APhillips Petroleum Company · 1995
- Process for preparing optically active compounds54US 6,184,381 B2Asahi Kasei Kogyo Kabushiki Kaisha · 2001
- Ruthenium-phosphine complex53US 4,691,037 ATakasago Perfumery Co., Ltd. · 1987
- Particle-bearing composite and a method for producing the same52US 5,213,895 ADaiso Co., Ltd. · 1993