C07C 45/27
Preparation of compounds having >c = o groups bound only to carbon
Official title: by oxidation (with ozone C07C45/40)
C07C45/27 (Preparation of compounds having >c = o groups bound only to carbon) appears on 2,904 US grants and 1,396 published applications in this corpus.
Search patents in C07C- Granted patents
- 2,904
- Published applications
- 1,396
- Assignees
- 987
- Inventors
- 5,525
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 137 | 0 |
| 1977 | 96 | 0 |
| 1978 | 67 | 0 |
| 1979 | 66 | 0 |
| 1980 | 89 | 0 |
| 1981 | 80 | 0 |
| 1982 | 77 | 0 |
| 1983 | 59 | 0 |
| 1984 | 77 | 0 |
| 1985 | 68 | 0 |
| 1986 | 63 | 0 |
| 1987 | 49 | 0 |
| 1988 | 53 | 0 |
| 1989 | 62 | 0 |
| 1990 | 74 | 0 |
| 1991 | 58 | 0 |
| 1992 | 84 | 0 |
| 1993 | 74 | 0 |
| 1994 | 51 | 0 |
| 1995 | 35 | 0 |
| 1996 | 53 | 0 |
| 1997 | 57 | 0 |
| 1998 | 60 | 0 |
| 1999 | 64 | 0 |
| 2000 | 58 | 0 |
| 2001 | 61 | 15 |
| 2002 | 62 | 63 |
| 2003 | 64 | 74 |
| 2004 | 58 | 114 |
| 2005 | 42 | 84 |
| 2006 | 67 | 88 |
| 2007 | 64 | 78 |
| 2008 | 57 | 64 |
| 2009 | 55 | 58 |
| 2010 | 58 | 65 |
| 2011 | 36 | 50 |
| 2012 | 43 | 47 |
| 2013 | 53 | 60 |
| 2014 | 54 | 50 |
| 2015 | 59 | 62 |
| 2016 | 50 | 51 |
| 2017 | 48 | 42 |
| 2018 | 37 | 41 |
| 2019 | 42 | 36 |
| 2020 | 32 | 36 |
| 2021 | 25 | 37 |
| 2022 | 26 | 40 |
| 2023 | 31 | 41 |
| 2024 | 25 | 47 |
| 2025 | 18 | 38 |
| 2026 | 26 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Recycling of polyacetal for the production of polyoxymethylene dialkyl ethers22 Sep 2026US 12,742,054 B2Chemcom Investments BV
- Method for producing fluorenone25 Aug 2026US 12,715,831 B2Mitsubishi Gas Chemical Company, Inc.
- Method for producing (meth)acrolein and method for producing (meth)acrylic acid25 Aug 2026US 12,715,833 B2Mitsubishi Chemical Corporation
- Catalyst28 Jul 2026US 12,691,438 B2Mitsubishi Chemical Corporation
- Production of acrolein or acrylic acid from iso-propanol with high yeild and low cost14 Jul 2026US 12,679,795 B2Rohm and Haas Company
- Tube bundle reactor24 Sep 2026US 2026/0284622 A1MAN Energy Solutions SE
- Processes for the preparation of citral and interrelated products24 Sep 2026US 2026/0285794 A1BASF SE
- Stabilization of high-concentration formaldehyde solutions27 Aug 2026US 2026/0250227 A1Celanese International Corporation
- Process for preparing allylic alcohol6 Aug 2026US 2026/0225981 A1
- Feedstock to aromatic hydrocarbons conversion via formaldehyde route in dual bed reactor30 Jul 2026US 2026/0217624 A1King Abdullah University of Science and Technology
Most cited
By later US patents
- Process for the preparation of an olefin polymer239US 5,278,264 AHoechst Aktiengesellschaft · 1994
- Methods for identifying and optimizing materials in microfluidic systems177US 6,737,026 B1Symyx Technologies, Inc. · 2004
- Phenethanolamine derivatives172US 4,992,474 AGlaxo Group Limited · 1991
- Chemical processing microsystems comprising parallel flow microreactors and methods for using same166US 6,749,814 B1Symyx Technologies, Inc. · 2004
- Retroviral protease inhibiting compounds159US 5,142,056 AAbbott Laboratories · 1992