C07C 33/12
Containing five-membered rings
Official title: containing five-membered rings
C07C33/12 (Containing five-membered rings) appears on 79 US grants and 23 published applications in this corpus.
Search patents in C07C- Granted patents
- 79
- Published applications
- 23
- Assignees
- 33
- Inventors
- 163
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 12 | 0 |
| 1979 | 11 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 8 | 0 |
| 1986 | 3 | 0 |
| 1987 | 6 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 2 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 2 |
| 2017 | 2 | 0 |
| 2018 | 1 | 3 |
| 2019 | 2 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 2 |
| 2023 | 0 | 3 |
| 2024 | 1 | 2 |
| 2025 | 3 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cyclopropanated sandalwood type compounds17 Feb 2026US 12,552,732 B2Symrise AG
- Processes and intermediates for the preparation of carbaprostacyclin analogues30 Sep 2025US 12,428,361 B2Chirogate International Inc.
- Sandalwood-type fragrance compounds9 Sep 2025US 12,410,113 B2Symrise AG
- Processes and intermediates for the preparation of carbaprostacyclin analogues11 Feb 2025US 12,221,411 B2Chirogate International Inc.
- Processes and intermediates for the preparation of carbaprostacyclin analogues30 Jan 2024US 11,884,613 B2Chirogate International Inc.
- Preparation of alpha-necrodyl isobutyrate from dienes4 Jun 2026US 2026/0152461 A1Suterra, LLC
- Fragrance composition12 Mar 2026US 2026/0069516 A1Takasago International Corporation
- Processes and intermediates for the preparation of carbaprostacyclin analogues2 Oct 2025US 2025/0304519 A1Chirogate International Inc.
- Compounds as self-tanning substances and tanning compositions thereof22 Feb 2024US 2024/0058240 A1Chemcom S.A.
- Processes and intermediates for the preparation of carbaprostacyclin analogues25 Jan 2024US 2024/0025832 A1Chirogate International Inc.
Most cited
By later US patents
- Flavoring with substituted norbornane derivatives35US 4,076,853 AInternational Flavors & Fragrances Inc. · 1978
- Oxabicycloalkane herbicides28US 4,670,041 AE. I. Du Pont de Nemours and Company · 1987
- Propenylamines, pharmaceutical compositions containing them and their use as pharmaceuticals23US 4,755,534 ASandoz Ltd. · 1988
- Flavoring with substituted norbornane derivatives17US 4,136,208 AInternational Flavors & Fragrances Inc. · 1979
- Hydroxylic campholenic aldehyde derivatives, their utilization as perfume ingredients and perfuming compositions containing same13US 4,610,813 AFirmenich SA · 1986