C07D 473/08
With methyl radicals in positions 1 and 3
Official title: with methyl radicals in positions 1 and 3, e.g. theophylline
C07D473/08 (With methyl radicals in positions 1 and 3) appears on 275 US grants and 198 published applications in this corpus.
Search patents in C07D- Granted patents
- 275
- Published applications
- 198
- Assignees
- 176
- Inventors
- 771
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 5 | 0 |
| 1978 | 8 | 0 |
| 1979 | 4 | 0 |
| 1980 | 5 | 0 |
| 1981 | 7 | 0 |
| 1982 | 2 | 0 |
| 1983 | 11 | 0 |
| 1984 | 5 | 0 |
| 1985 | 10 | 0 |
| 1986 | 14 | 0 |
| 1987 | 10 | 0 |
| 1988 | 7 | 0 |
| 1989 | 7 | 0 |
| 1990 | 5 | 0 |
| 1991 | 5 | 0 |
| 1992 | 5 | 0 |
| 1993 | 1 | 0 |
| 1994 | 5 | 0 |
| 1995 | 6 | 0 |
| 1996 | 6 | 0 |
| 1997 | 4 | 0 |
| 1998 | 9 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 3 | 5 |
| 2003 | 3 | 8 |
| 2004 | 4 | 14 |
| 2005 | 5 | 12 |
| 2006 | 5 | 5 |
| 2007 | 8 | 6 |
| 2008 | 3 | 11 |
| 2009 | 7 | 6 |
| 2010 | 6 | 11 |
| 2011 | 2 | 10 |
| 2012 | 9 | 11 |
| 2013 | 6 | 12 |
| 2014 | 2 | 15 |
| 2015 | 10 | 7 |
| 2016 | 10 | 9 |
| 2017 | 6 | 8 |
| 2018 | 3 | 8 |
| 2019 | 10 | 6 |
| 2020 | 6 | 8 |
| 2021 | 2 | 6 |
| 2022 | 1 | 5 |
| 2023 | 4 | 2 |
| 2024 | 4 | 6 |
| 2025 | 2 | 1 |
| 2026 | 1 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Purine diones as Wnt pathway modulators24 Feb 2026US 12,559,495 B2Agency for Science, Technology and Research
- Small molecule PARG inhibitors and methods of use thereof9 Dec 2025US 12,491,188 B2Board of Regents, The University of Texas System
- Cyclic amide-containing pyridyl xanthines as A2B antagonists8 Apr 2025US 12,269,828 B2Adovate, LLC
- PAPD5 inhibitors and methods of use thereof24 Dec 2024US 12,171,755 B2Children's Medical Center Corporation
- Heterocyclic compound21 May 2024US 11,986,480 B2Tohoku University
- Heterocyclic compounds targeting the nudt5 protein16 Jul 2026US 2026/0200923 A1Oxford University Innovation Limited
- Compounds for reducing cholesterol and treating liver and kidney disease4 Jun 2026US 2026/0151398 A1McMaster University
- Papd5 inhibitors and methods of use thereof30 Apr 2026US 2026/0115182 A1Children's Medical Center Corporation
- Nucleoside derivative for preventing and treating inflammation and application thereof26 Mar 2026US 2026/0083743 A1West China Hospital, Sichuan University
- Novel cocrystals of methylxanthines, their polymorphs and process thereof5 Mar 2026US 2026/0062414 A1Fertis India Pvt Ltd
Most cited
By later US patents
- 8-[3-amino-piperidin-1-yl]-xanthines, the preparation thereof and their use as pharmaceutical compositions122US 7,407,955 B2Boehringer Ingelheim Pharma GMBH & CO.KG · 2008
- Electrochemiluminescent rhenium moieties and methods for their use120US 5,591,581 AIgen, Inc. · 1997
- Xanthine derivative and DPPIV inhibitor103US 7,074,798 B2Eisai Co., Ltd. · 2006
- 8-[3-amino-piperidin-1-yl]-xanthines, the preparation thereof and their use as pharmaceutical compositions98US 8,119,648 B2Boehringer Ingelheim Pharma GMBH & CO.KG · 2012
- 8-[3-amino-piperidin-1-yl]-xanthines, the preparation thereof and their use as pharmaceutical compositions97US 8,178,541 B2Boehringer Ingelheim Pharma GMBH & CO.KG · 2012