C07D 323/00
Heterocyclic compounds containing more than two oxygen atoms as the only ring
Official title: Heterocyclic compounds containing more than two oxygen atoms as the only ring hetero atoms
C07D323/00 (Heterocyclic compounds containing more than two oxygen atoms as the only ring) appears on 383 US grants and 253 published applications in this corpus.
Search patents in C07D- Granted patents
- 383
- Published applications
- 253
- Assignees
- 234
- Inventors
- 881
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 5 | 0 |
| 1978 | 9 | 0 |
| 1979 | 8 | 0 |
| 1980 | 12 | 0 |
| 1981 | 9 | 0 |
| 1982 | 8 | 0 |
| 1983 | 6 | 0 |
| 1984 | 3 | 0 |
| 1985 | 9 | 0 |
| 1986 | 10 | 0 |
| 1987 | 9 | 0 |
| 1988 | 7 | 0 |
| 1989 | 2 | 0 |
| 1990 | 6 | 0 |
| 1991 | 8 | 0 |
| 1992 | 9 | 0 |
| 1993 | 16 | 0 |
| 1994 | 8 | 0 |
| 1995 | 11 | 0 |
| 1996 | 6 | 0 |
| 1997 | 4 | 0 |
| 1998 | 7 | 0 |
| 1999 | 9 | 0 |
| 2000 | 12 | 0 |
| 2001 | 11 | 6 |
| 2002 | 16 | 6 |
| 2003 | 5 | 12 |
| 2004 | 6 | 18 |
| 2005 | 6 | 12 |
| 2006 | 4 | 9 |
| 2007 | 8 | 12 |
| 2008 | 6 | 15 |
| 2009 | 5 | 7 |
| 2010 | 6 | 18 |
| 2011 | 6 | 11 |
| 2012 | 7 | 9 |
| 2013 | 12 | 12 |
| 2014 | 10 | 15 |
| 2015 | 16 | 7 |
| 2016 | 8 | 9 |
| 2017 | 8 | 10 |
| 2018 | 9 | 4 |
| 2019 | 6 | 5 |
| 2020 | 3 | 9 |
| 2021 | 7 | 8 |
| 2022 | 1 | 7 |
| 2023 | 6 | 6 |
| 2024 | 6 | 13 |
| 2025 | 4 | 7 |
| 2026 | 2 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Nonaqueous electrolyte solution for lithium secondary batteries, lithium secondary battery precursor, lithium secondary battery, and method for manufacturing lithium secondary battery14 Jul 2026US 12,683,191 B2Daikin Industries, Ltd.
- Process and device for preparing trioxane from methanol7 Apr 2026US 12,595,242 B2Chengdu Organic Chemicals Co., Ltd. Chinese Academy of Sciences
- Polymers and the use thereof for detecting ion fluxes4 Nov 2025US 12,460,038 B2Centre National De La Recherche Scientifique
- Synthesizing drug-organic-acid-anhydride conjugates without using coupling reagent9 Sep 2025US 12,409,229 B2Cnpharm Co., Ltd.
- Rotaxane compound15 Apr 2025US 12,275,749 B2Sumitomo Rubber Industries, Ltd.
- Cyclodepolymerization method for aromatic polyesters8 Oct 2026US 2026/0308350 A1Soochow University
- Method for purifying a crystalline substance1 Oct 2026US 2026/0297051 A1China Petroleum & Chemical Corporation
- Use of Biomass to Produce Polyoxymethylene Copolymers13 Aug 2026US 2026/0234317 A1Celanese International Corporation
- Synthesizing drug-organic-acid-anhydride conjugates without using coupling reagent6 Aug 2026US 2026/0224710 A1Cnpharm Co., Ltd.
- Continuous-flow catalytic dehydration process for the synthesis of macrocyclic compounds16 Jul 2026US 2026/0200889 A1Indian Institute of Science Education and Research, Pune (IISER Pune)
Most cited
By later US patents
- Photoresist monomers, polymers and photoresist compositions for preventing acid diffusion469US 6,924,078 B2Dongjin Semichem Co., Ltd. · 2005
- Batteries, conductive compositions, and conductive films containing organic liquid electrolytes and plasticizers154US 5,731,104 ASRI International · 1998
- Bis-crown-ether derivatives and their use117US 4,523,994 AShimadzu Corporation · 1985
- Therapeutic compositions115US 6,323,237 B1BTG International Limited · 2001
- Therapeutic compositions114US 6,207,856 B1BTG International Limited · 2001