C07D 301/02
Synthesis of the oxirane ring
C07D301/02 (Synthesis of the oxirane ring) appears on 1,831 US grants and 1,325 published applications in this corpus.
Search patents in C07D- Granted patents
- 1,831
- Published applications
- 1,325
- Assignees
- 559
- Inventors
- 3,103
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 17 | 0 |
| 1977 | 30 | 0 |
| 1978 | 34 | 0 |
| 1979 | 20 | 0 |
| 1980 | 23 | 0 |
| 1981 | 34 | 0 |
| 1982 | 19 | 0 |
| 1983 | 34 | 0 |
| 1984 | 22 | 0 |
| 1985 | 19 | 0 |
| 1986 | 17 | 0 |
| 1987 | 16 | 0 |
| 1988 | 21 | 0 |
| 1989 | 40 | 0 |
| 1990 | 29 | 0 |
| 1991 | 27 | 0 |
| 1992 | 30 | 0 |
| 1993 | 21 | 0 |
| 1994 | 23 | 0 |
| 1995 | 34 | 0 |
| 1996 | 27 | 0 |
| 1997 | 44 | 0 |
| 1998 | 51 | 0 |
| 1999 | 45 | 0 |
| 2000 | 47 | 0 |
| 2001 | 41 | 10 |
| 2002 | 58 | 41 |
| 2003 | 62 | 83 |
| 2004 | 50 | 94 |
| 2005 | 45 | 66 |
| 2006 | 46 | 53 |
| 2007 | 33 | 58 |
| 2008 | 35 | 59 |
| 2009 | 39 | 60 |
| 2010 | 45 | 74 |
| 2011 | 44 | 63 |
| 2012 | 34 | 62 |
| 2013 | 57 | 81 |
| 2014 | 71 | 69 |
| 2015 | 88 | 62 |
| 2016 | 53 | 60 |
| 2017 | 45 | 41 |
| 2018 | 48 | 55 |
| 2019 | 40 | 40 |
| 2020 | 49 | 40 |
| 2021 | 20 | 36 |
| 2022 | 25 | 27 |
| 2023 | 23 | 39 |
| 2024 | 18 | 21 |
| 2025 | 19 | 18 |
| 2026 | 19 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Propylene oxide production apparatus and propylene oxide production method25 Aug 2026US 12,714,977 B2Sumitomo Chemical Company, Limited
- Metal-organic framework (MOF) MIL-125 and preparation method and use thereof25 Aug 2026US 12,714,989 B2Dalian Institute of Chemical Physics, Chinese Academy of Sciences
- Production of porous alpha-alumina supports from boehmitic derived aluminas4 Aug 2026US 12,697,603 B2BASF SE
- Catalyst effective in the oxidative conversion of ethylene to ethylene oxide14 Jul 2026US 12,678,775 B2BASF SE
- Process for producing a porous alpha-alumina catalyst support16 Jun 2026US 12,654,152 B2BASF SE
- A continuous process for preparing ethylene oxide1 Oct 2026US 2026/0297045 A1BASF SE
- Polyethylene terephthalate produced from used tires1 Oct 2026US 2026/0297247 A1
- Start-up method for a process for preparing an olefin oxide24 Sep 2026US 2026/0285822 A1Base SE
- Process for the synthesis of the compound 5,7-diiodo-1-oxaspiro[2,5]octa-4,7- dien-6-one27 Aug 2026US 2026/0250258 A1Centre National De La Recherche Scientifique
- Total syntheses of portimine a and analogues thereof as small molecule modulators of nmd320 Aug 2026US 2026/0242390 A1The Scripps Research Institute
Most cited
By later US patents
- Ethylene oxide catalyst and process for preparing the catalyst169US 4,761,394 AShell Oil Company · 1988
- Alkylene oxide catalysts containing high silver content168US 5,187,140 AUnion Carbide Chemicals & Plastics Technology Corporation · 1993
- Ethylene oxide catalyst and process for preparing the catalyst163US 4,766,105 AShell Oil Company · 1988
- Catalyst composition for oxidation of ethylene to ethylene oxide152US 4,908,343 AUnion Carbide Chemicals and Plastics Company Inc. · 1990
- Process for the epoxidation of olefinic compounds130US 4,833,260 AAnic S.p.A. · 1989