C07C 2603/97
Containing five-membered rings
Official title: containing five-membered rings
C07C2603/97 (Containing five-membered rings) appears on 140 US grants and 198 published applications in this corpus.
Search patents in C07C- Granted patents
- 140
- Published applications
- 198
- Assignees
- 81
- Inventors
- 447
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 1 |
| 2004 | 1 | 3 |
| 2005 | 1 | 3 |
| 2006 | 3 | 5 |
| 2007 | 1 | 4 |
| 2008 | 2 | 6 |
| 2009 | 3 | 6 |
| 2010 | 5 | 2 |
| 2011 | 3 | 2 |
| 2012 | 1 | 4 |
| 2013 | 0 | 1 |
| 2014 | 3 | 5 |
| 2015 | 3 | 3 |
| 2016 | 3 | 16 |
| 2017 | 8 | 10 |
| 2018 | 11 | 20 |
| 2019 | 13 | 22 |
| 2020 | 8 | 16 |
| 2021 | 16 | 13 |
| 2022 | 14 | 15 |
| 2023 | 13 | 16 |
| 2024 | 11 | 14 |
| 2025 | 6 | 8 |
| 2026 | 6 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Compound, and composition for forming hole transporting layer for perovskite solar cells15 Sep 2026US 12,735,395 B2Tokyo Chemical Industry Co., Ltd.
- Heterocyclic compound and organic light emitting device comprising same1 Sep 2026US 12,727,378 B2Lt Materials Co., Ltd.
- Light-emitting device and electronic apparatus including the same14 Jul 2026US 12,685,012 B2Samsung Display Co., Ltd.
- Light-emitting device and electronic apparatus including light-emitting device24 Feb 2026US 12,559,500 B2Samsung Display Co., Ltd.
- Dihydroxylation of olefins using osmate (VI) salts3 Feb 2026US 12,540,110 B2International Flavors & Fragrances Inc.
- Photoelectric conversion element, imaging element, photoelectric conversion element material, and compound26 Mar 2026US 2026/0090266 A1Tosoh Corporation
- Material for hole-transport layer, material for hole-injection layer, organic compound, light-emitting device, light-emitting apparatus, electronic device, and lighting device26 Feb 2026US 2026/0055316 A1Semiconductor Energy Laboratory Co.Ltd.
- Organic compound and organic electroluminescent device, and electronic apparatus thereof20 Nov 2025US 2025/0359423 A1Shaanxi Lighte Optoelectronics Material Co., Ltd.
- Tetrahydro-1h-cyclopenta[cd]indene derivatives as hypoxia inducible factor-2(alpha) inhibitors6 Nov 2025US 2025/0340508 A1Nikang Therapeutics, Inc.
- Compound for organic electronic element, organic electronic element using the same, and an electronic device thereof11 Sep 2025US 2025/0287833 A1Duk San Neolux Co., Ltd.
Most cited
By later US patents
- Double-spiro organic compounds and organic electroluminescent devices using the same39US 6,998,487 B2LG Chem.Ltd. · 2006
- Process of forming polysubstituted fullerenes35US 5,177,248 AExxon Research & Engineering Co. · 1993
- Polysubstituted fullerenes and their preparation35US 5,294,732 AExxon Research & Engineering Co. · 1994
- Polysubstituted fullerenes and their preparation (C-2608)33US 5,416,188 AExxon Research & Engineering Co. · 1995
- Spirofluorene derivative, material for light-emitting element, light-emitting element, light-emitting device, and electronic device33US 7,816,668 B2Semiconductor Energy Laboratory Co., Ltd. · 2010