C07D 303/04
Containing only hydrogen and carbon atoms in addition to the ring oxygen
Official title: containing only hydrogen and carbon atoms in addition to the ring oxygen atoms
C07D303/04 (Containing only hydrogen and carbon atoms in addition to the ring oxygen) appears on 607 US grants and 316 published applications in this corpus.
Search patents in C07D- Granted patents
- 607
- Published applications
- 316
- Assignees
- 325
- Inventors
- 1,391
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 17 | 0 |
| 1977 | 18 | 0 |
| 1978 | 22 | 0 |
| 1979 | 12 | 0 |
| 1980 | 21 | 0 |
| 1981 | 18 | 0 |
| 1982 | 6 | 0 |
| 1983 | 9 | 0 |
| 1984 | 14 | 0 |
| 1985 | 11 | 0 |
| 1986 | 11 | 0 |
| 1987 | 12 | 0 |
| 1988 | 9 | 0 |
| 1989 | 18 | 0 |
| 1990 | 18 | 0 |
| 1991 | 17 | 0 |
| 1992 | 30 | 0 |
| 1993 | 12 | 0 |
| 1994 | 13 | 0 |
| 1995 | 11 | 0 |
| 1996 | 12 | 0 |
| 1997 | 21 | 0 |
| 1998 | 11 | 0 |
| 1999 | 8 | 0 |
| 2000 | 9 | 0 |
| 2001 | 9 | 1 |
| 2002 | 15 | 10 |
| 2003 | 10 | 12 |
| 2004 | 7 | 19 |
| 2005 | 8 | 9 |
| 2006 | 11 | 8 |
| 2007 | 4 | 8 |
| 2008 | 4 | 12 |
| 2009 | 7 | 19 |
| 2010 | 10 | 15 |
| 2011 | 10 | 7 |
| 2012 | 10 | 8 |
| 2013 | 10 | 9 |
| 2014 | 12 | 11 |
| 2015 | 9 | 16 |
| 2016 | 11 | 13 |
| 2017 | 11 | 7 |
| 2018 | 12 | 18 |
| 2019 | 11 | 20 |
| 2020 | 19 | 19 |
| 2021 | 10 | 10 |
| 2022 | 7 | 17 |
| 2023 | 8 | 19 |
| 2024 | 6 | 13 |
| 2025 | 8 | 9 |
| 2026 | 8 | 7 |
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
- Preparation method of alkali metal ion modified titanium silicalite zeolite for gas phase epoxidation of propylene and hydrogen peroxide14 Apr 2026US 12,599,899 B2Dalian Qiyuan Technology Co., Ltd.
- Non-cationic softeners and methods of use14 Apr 2026US 12,600,924 B2Ecolab USA Inc.
- Epoxide functionalized polyaromatic feedstock and polymers derived therefrom10 Mar 2026US 12,570,623 B2ExxonMobil Technology and Engineering Company
- Polyethylene terephthalate produced from used tires1 Oct 2026US 2026/0297247 A1
- Simplified ethylene oxide purification methods10 Sep 2026US 2026/0265210 A1Dow Global Technologies LLC
- Photosensitive resin composition, photosensitive resin coating film, photosensitive dry film, and pattern formation method6 Aug 2026US 2026/0227693 A1Shin-Etsu Chemical Co., Ltd.
- Method and system for preparing alkylene oxide18 Jun 2026US 2026/0166506 A1China Petroleum & Chemical Corporation
- Non-cationic softeners and methods of use18 Jun 2026US 2026/0167896 A1Ecolab USA Inc.
Most cited
By later US patents
- Retroviral protease inhibiting compounds159US 5,142,056 AAbbott Laboratories · 1992
- Process for the epoxidation of olefinic compounds130US 4,833,260 AAnic S.p.A. · 1989
- Phase transfer catalysis of heterogeneous reactions by quaternary salts123US 3,992,432 AContinental Oil Company · 1976
- Retroviral protease inhibiting compounds109US 5,354,866 AAbbott Laboratories · 1994
- 1-hydroxyethyl-azole compounds and agricultural compositions92US 4,723,984 ABayer Aktiengesellschaft · 1988