B01J 2231/321
Hydroformylation, metalformylation, carbonylation or hydroaminomethylation
B01J2231/321 (Hydroformylation, metalformylation, carbonylation or hydroaminomethylation) appears on 849 US grants and 465 published applications in this corpus.
Search patents in B01J- Granted patents
- 849
- Published applications
- 465
- Assignees
- 270
- Inventors
- 1,423
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 29 | 0 |
| 1977 | 16 | 0 |
| 1978 | 11 | 0 |
| 1979 | 21 | 0 |
| 1980 | 22 | 0 |
| 1981 | 34 | 0 |
| 1982 | 18 | 0 |
| 1983 | 22 | 0 |
| 1984 | 25 | 0 |
| 1985 | 26 | 0 |
| 1986 | 15 | 0 |
| 1987 | 2 | 0 |
| 1988 | 7 | 0 |
| 1989 | 10 | 0 |
| 1990 | 6 | 0 |
| 1991 | 9 | 0 |
| 1992 | 21 | 0 |
| 1993 | 23 | 0 |
| 1994 | 16 | 0 |
| 1995 | 10 | 0 |
| 1996 | 8 | 0 |
| 1997 | 10 | 0 |
| 1998 | 43 | 0 |
| 1999 | 16 | 0 |
| 2000 | 22 | 0 |
| 2001 | 24 | 2 |
| 2002 | 20 | 8 |
| 2003 | 12 | 22 |
| 2004 | 18 | 29 |
| 2005 | 11 | 13 |
| 2006 | 18 | 20 |
| 2007 | 17 | 10 |
| 2008 | 7 | 9 |
| 2009 | 10 | 10 |
| 2010 | 10 | 7 |
| 2011 | 5 | 12 |
| 2012 | 8 | 13 |
| 2013 | 8 | 6 |
| 2014 | 13 | 14 |
| 2015 | 16 | 29 |
| 2016 | 24 | 32 |
| 2017 | 36 | 27 |
| 2018 | 16 | 17 |
| 2019 | 28 | 28 |
| 2020 | 20 | 18 |
| 2021 | 18 | 29 |
| 2022 | 11 | 33 |
| 2023 | 17 | 27 |
| 2024 | 22 | 27 |
| 2025 | 10 | 15 |
| 2026 | 8 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Preparation of organosilicon compounds with carbinol functionality6 Oct 2026US 12,753,193 B2Dow Global Technologies LLC
- Process for hydroformylation with removal of dissolved hydrogen28 Apr 2026US 12,612,351 B2Johnson Matthey Davy Technologies Limited
- Process for the hydroformylation of olefins in homogeneous phase21 Apr 2026US 12,606,512 B2Oxea GmbH
- Propionic acid process7 Apr 2026US 12,595,223 B2Eastman Chemical Company
- Methods for increasing hydroformylation catalyst preforming rates24 Feb 2026US 12,559,447 B2ExxonMobil Chemical Patents Inc.
- Process for improving rhodium/phosphite-based homogenous hydroformylation catalyst activity8 Oct 2026US 2026/0308098 A1Dow Technology Investments LLC
- Process for preparing, by hydroformylation, short-chain olefins in the gas phase20 Aug 2026US 2026/0242321 A1Evonik Oxeno GmbH
- Catalyst system and method for carbonylation reaction23 Jul 2026US 2026/0208174 A1Shandong Nhu Fine Chemical Science and Technology Company Ltd.
- Phosphine ligands and use thereof in carbonylation of acetylene/ethylene to synthesize acrylate/propionate18 Jun 2026US 2026/0167598 A1Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences
- Picolyl ligands and their use in alkoxycarbonylation18 Jun 2026US 2026/0167653 A1Evonik Oxeno GmbH
Most cited
By later US patents
- Transition metal complex catalyzed processes126US 4,769,498 AUnion Carbide Corporation · 1988
- Transition metal complex catalyzed processes112US 4,668,651 AUnion Carbide Corporation · 1987
- Catalytic hydroformylation of olefins102US 4,248,802 ARhone-Poulenc Industries · 1981
- Hydroformylation process97US 5,288,918 AUnion Carbide Chemicals & Plastics Technology Corporation · 1994
- Transition metal complex catalyzed reactions89US 4,599,206 AUnion Carbide Corporation · 1986