C07H 15/24
Condensed ring systems having three or more rings
C07H15/24 (Condensed ring systems having three or more rings) appears on 939 US grants and 770 published applications in this corpus.
Search patents in C07H- Granted patents
- 939
- Published applications
- 770
- Assignees
- 452
- Inventors
- 2,067
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 14 | 0 |
| 1978 | 17 | 0 |
| 1979 | 13 | 0 |
| 1980 | 23 | 0 |
| 1981 | 29 | 0 |
| 1982 | 26 | 0 |
| 1983 | 21 | 0 |
| 1984 | 13 | 0 |
| 1985 | 11 | 0 |
| 1986 | 16 | 0 |
| 1987 | 10 | 0 |
| 1988 | 10 | 0 |
| 1989 | 19 | 0 |
| 1990 | 28 | 0 |
| 1991 | 18 | 0 |
| 1992 | 24 | 0 |
| 1993 | 15 | 0 |
| 1994 | 13 | 0 |
| 1995 | 14 | 0 |
| 1996 | 15 | 0 |
| 1997 | 29 | 0 |
| 1998 | 29 | 0 |
| 1999 | 20 | 0 |
| 2000 | 15 | 0 |
| 2001 | 15 | 7 |
| 2002 | 9 | 13 |
| 2003 | 13 | 19 |
| 2004 | 18 | 23 |
| 2005 | 8 | 27 |
| 2006 | 13 | 20 |
| 2007 | 8 | 21 |
| 2008 | 8 | 15 |
| 2009 | 9 | 12 |
| 2010 | 13 | 21 |
| 2011 | 7 | 19 |
| 2012 | 13 | 27 |
| 2013 | 12 | 29 |
| 2014 | 33 | 38 |
| 2015 | 23 | 32 |
| 2016 | 19 | 43 |
| 2017 | 27 | 47 |
| 2018 | 30 | 51 |
| 2019 | 31 | 45 |
| 2020 | 34 | 57 |
| 2021 | 22 | 48 |
| 2022 | 30 | 43 |
| 2023 | 30 | 36 |
| 2024 | 22 | 36 |
| 2025 | 25 | 23 |
| 2026 | 16 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Chemically cleavable group15 Sep 2026US 12,735,444 B2Tagworks Pharmaceuticals B.V.
- Stevia extracts8 Sep 2026US 12,727,609 B2PureCircle Sdn Bhd
- Prodrugs for sustained releasing therapeutic agents and uses thereof8 Sep 2026US 12,729,186 B2Liangjiang Medicine Co., Ltd.
- Semicarbazone-based saponin conjugate18 Aug 2026US 12,708,638 B2Sapreme Technologies B.V.
- High-purity steviol glycosides18 Aug 2026US 12,709,768 B2PureCircle USA Inc.
- Improved isolation of steviol glycosides1 Oct 2026US 2026/0297119 A1Dsm IP Assets B.V.
- Steviol glycoside solubility enhancers1 Oct 2026US 2026/0297120 A1Cargill, Incorporated
- Method for preparing glucosyl stevioside using mother liquor sugar, separating and purifying glucosyl stevioside and recovering glucose10 Sep 2026US 2026/0265801 A1Dongtai Haorui Biotechnology Co., Ltd.
- Qs-21 compositions and processes for producing the same and uses therefor30 Jul 2026US 2026/0216324 A1Q-Vant Biosciences, Inc.
- High-solubility rebaudioside d complex30 Jul 2026US 2026/0217753 A1Suntory Holdings Limited
Most cited
By later US patents
- Saponin adjuvant520US 5,057,540 ACambridge Biotech Corporation · 1991
- Anthracycline conjugates having a novel linker and methods for their production315US 5,122,368 ABristol-Myers Squibb Company · 1992
- Cytotoxic agents comprising modified doxorubicins and daunorubicins and their therapeutic use211US 6,630,579 B2ImmunoGen, Inc. · 2003
- Extraction, separation and recovery of diterpene glycosides from Stevia rebaudiana plants175US 4,361,697 AF. K. Suzuki International, Inc. · 1982
- Branched hydrazone linkers174US 5,824,805 A1998