C07C 45/505
Asymmetric hydroformylation
Official title: {Asymmetric hydroformylation}
C07C45/505 (Asymmetric hydroformylation) appears on 185 US grants and 158 published applications in this corpus.
Search patents in C07C- Granted patents
- 185
- Published applications
- 158
- Assignees
- 76
- Inventors
- 389
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 24 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 5 | 2 |
| 2002 | 5 | 3 |
| 2003 | 4 | 5 |
| 2004 | 4 | 6 |
| 2005 | 2 | 2 |
| 2006 | 5 | 5 |
| 2007 | 3 | 2 |
| 2008 | 2 | 1 |
| 2009 | 1 | 2 |
| 2010 | 1 | 1 |
| 2011 | 1 | 1 |
| 2012 | 2 | 0 |
| 2013 | 0 | 5 |
| 2014 | 8 | 9 |
| 2015 | 9 | 15 |
| 2016 | 13 | 9 |
| 2017 | 13 | 10 |
| 2018 | 5 | 4 |
| 2019 | 4 | 7 |
| 2020 | 9 | 3 |
| 2021 | 3 | 8 |
| 2022 | 5 | 13 |
| 2023 | 7 | 22 |
| 2024 | 9 | 9 |
| 2025 | 5 | 9 |
| 2026 | 5 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Processes to improve catalytic metal accountability in hydroformylation processes4 Aug 2026US 12,698,251 B2Dow Technology Investments LLC
- Process for the continuous production of either acrolein or acrylic acid as the target product from propene9 Jun 2026US 12,649,710 B2BASF SE
- Process for hydroformylation with removal of dissolved hydrogen28 Apr 2026US 12,612,351 B2Johnson Matthey Davy Technologies Limited
- Recycle content oxo glycols17 Mar 2026US 12,577,188 B2ExxonMobil Product Solutions Company
- Methods for increasing hydroformylation catalyst preforming rates24 Feb 2026US 12,559,447 B2ExxonMobil Chemical Patents Inc.
- Hydroformylation process8 Oct 2026US 2026/0308097 A1Dow Technology Investments LLC
- Process for improving rhodium/phosphite-based homogenous hydroformylation catalyst activity8 Oct 2026US 2026/0308098 A1Dow Technology Investments LLC
- Method and apparatus for producing aldehyde13 Aug 2026US 2026/0234092 A1Johnson Matthey Davy Technologies Limited
- Process to minimize polyphosphine usage by making use of degradation products4 Jun 2026US 2026/0152460 A1Dow Technology Investments LLC
- Cyclic diene-containing composition, production method for aldehyde, production method for alcohol, and production method for cyclic diene-containing composition5 Feb 2026US 2026/0035328 A1Mitsubishi Chemical Corporation
Most cited
By later US patents
- New types of organometallic reagents and catalysts for asymmetric synthesis53US 4,885,376 AIowa State University Research Foundation, Inc. · 1989
- Asymmetric syntheses48US 5,360,938 AUnion Carbide Chemicals & Plastics Technology Corporation · 1994
- Chiral metallocene compounds and preparation thereof by creation of a chiral center by enantioselective hydride transfer42US 5,349,100 AExxon Chemical Patents Inc. · 1994
- Asymmetric syntheses36US 5,491,266 AUnion Carbide Chemicals & Plastics Technology Corporation · 1996
- Membrane separation process35US 5,681,473 AUnion Carbide Chemicals & Plastics Technology Corporation · 1997