C07D 307/92
Naphthofurans
Official title: Naphthofurans; Hydrogenated naphthofurans
C07D307/92 (Naphthofurans) appears on 327 US grants and 277 published applications in this corpus.
Search patents in C07D- Granted patents
- 327
- Published applications
- 277
- Assignees
- 186
- Inventors
- 959
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 8 | 0 |
| 1978 | 6 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 7 | 0 |
| 1985 | 1 | 0 |
| 1986 | 5 | 0 |
| 1987 | 4 | 0 |
| 1988 | 5 | 0 |
| 1989 | 15 | 0 |
| 1990 | 4 | 0 |
| 1991 | 8 | 0 |
| 1992 | 6 | 0 |
| 1993 | 9 | 0 |
| 1994 | 4 | 0 |
| 1995 | 11 | 0 |
| 1996 | 3 | 0 |
| 1997 | 7 | 0 |
| 1998 | 14 | 0 |
| 1999 | 7 | 0 |
| 2000 | 3 | 0 |
| 2001 | 5 | 0 |
| 2002 | 6 | 4 |
| 2003 | 4 | 2 |
| 2004 | 2 | 10 |
| 2005 | 1 | 13 |
| 2006 | 3 | 5 |
| 2007 | 8 | 1 |
| 2008 | 6 | 4 |
| 2009 | 4 | 9 |
| 2010 | 3 | 13 |
| 2011 | 3 | 11 |
| 2012 | 9 | 11 |
| 2013 | 5 | 12 |
| 2014 | 11 | 8 |
| 2015 | 12 | 17 |
| 2016 | 13 | 15 |
| 2017 | 12 | 11 |
| 2018 | 8 | 18 |
| 2019 | 14 | 16 |
| 2020 | 14 | 16 |
| 2021 | 6 | 13 |
| 2022 | 7 | 10 |
| 2023 | 6 | 13 |
| 2024 | 9 | 15 |
| 2025 | 6 | 21 |
| 2026 | 3 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Organic electroluminescence device and polycyclic compound for organic electroluminescence device25 Aug 2026US 12,721,037 B2Samsung Display Co., Ltd.
- Quinone protected forms and conjugates4 Aug 2026US 12,697,392 B2Cambridge Enterprise Limited
- Organic electroluminescent compound and organic electroluminescent device comprising the same14 Apr 2026US 12,604,659 B2DuPont Specialty Materials Korea Ltd.
- Organic electroluminescent element and electronic device9 Dec 2025US 12,492,162 B2Idemitsu Kosan Co., Ltd.
- Compound and organic light emitting device comprising same14 Oct 2025US 12,446,466 B2LG Chem.Ltd.
- Benzocarbazole derivatives as inhibitors of drp110 Sep 2026US 2026/0265212 A1Asha Therapeutics LLC
- Aromatic amine compound, electroluminescent device, and display apparatus20 Aug 2026US 2026/0247854 A1Boe Technology Group Co., Ltd.
- Synthesis of derivatives of siphonochilone and therapeutic use thereof21 May 2026US 2026/0138962 A1
- Phosphor for detecting fire blight pathogen and use thereof30 Apr 2026US 2026/0116865 A1University-Industry Cooperation Group of Kyung Hee University
- Compound, organic electroluminescent device, and display apparatus16 Apr 2026US 2026/0107682 A1Boe Technology Group Co., Ltd.
Most cited
By later US patents
- Thiomethylated benzofuran-2-ones78US 5,252,643 ACiba-Geigy Corporation · 1993
- Recording material59US 4,985,345 ARicoh Company, Ltd. · 1991
- Photochromic compound, process for production thereof, use thereof and composition containing said photochromic compound47US 5,130,058 ATokuyama Soda Kabushiki Kaisha · 1992
- Quinones as disease therapies40US 6,809,176 B2SLIL Biomedical Corporation · 2004
- Benzothiophenes, benzofurans, and indoles useful in the treatment of insulin resistance and hyperglycemia38US 6,251,936 B1American Home Products Corporation · 2001