C07D 301/00
Preparation of oxiranes
C07D301/00 (Preparation of oxiranes) appears on 2,133 US grants and 1,548 published applications in this corpus.
Search patents in C07D- Granted patents
- 2,133
- Published applications
- 1,548
- Assignees
- 664
- Inventors
- 3,647
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 21 | 0 |
| 1977 | 33 | 0 |
| 1978 | 37 | 0 |
| 1979 | 22 | 0 |
| 1980 | 25 | 0 |
| 1981 | 37 | 0 |
| 1982 | 19 | 0 |
| 1983 | 39 | 0 |
| 1984 | 25 | 0 |
| 1985 | 21 | 0 |
| 1986 | 19 | 0 |
| 1987 | 19 | 0 |
| 1988 | 24 | 0 |
| 1989 | 45 | 0 |
| 1990 | 33 | 0 |
| 1991 | 31 | 0 |
| 1992 | 49 | 0 |
| 1993 | 25 | 0 |
| 1994 | 27 | 0 |
| 1995 | 40 | 0 |
| 1996 | 36 | 0 |
| 1997 | 46 | 0 |
| 1998 | 55 | 0 |
| 1999 | 58 | 0 |
| 2000 | 53 | 0 |
| 2001 | 48 | 11 |
| 2002 | 63 | 43 |
| 2003 | 67 | 91 |
| 2004 | 58 | 101 |
| 2005 | 50 | 73 |
| 2006 | 47 | 58 |
| 2007 | 35 | 61 |
| 2008 | 39 | 66 |
| 2009 | 42 | 63 |
| 2010 | 47 | 94 |
| 2011 | 54 | 71 |
| 2012 | 44 | 71 |
| 2013 | 70 | 92 |
| 2014 | 78 | 73 |
| 2015 | 98 | 83 |
| 2016 | 63 | 71 |
| 2017 | 53 | 54 |
| 2018 | 60 | 68 |
| 2019 | 50 | 54 |
| 2020 | 63 | 52 |
| 2021 | 30 | 51 |
| 2022 | 36 | 36 |
| 2023 | 31 | 46 |
| 2024 | 19 | 27 |
| 2025 | 26 | 21 |
| 2026 | 23 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Aromatic diol compounds, diepoxide compounds, polymers prepared from such compounds, and methods for making the same1 Sep 2026US 12,723,128 B2Swimc LLC
- 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
- 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
- Simplified ethylene oxide purification methods10 Sep 2026US 2026/0265210 A1Dow Global Technologies LLC
- 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
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
- Nanotechnology for engineering the performance of substances140US 6,531,704 B2NanoProducts Corporation · 2003