C07D 497/20
Spiro-condensed systems
C07D497/20 (Spiro-condensed systems) appears on 15 US grants and 13 published applications in this corpus.
Search patents in C07D- Granted patents
- 15
- Published applications
- 13
- Assignees
- 18
- Inventors
- 64
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 1 | 2 |
| 2012 | 1 | 0 |
| 2013 | 2 | 3 |
| 2014 | 1 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Photochromic cyclic compound and curable composition containing the photochromic cyclic compound12 May 2026US 12,624,048 B2Tokuyama Corporation
- Compositions and methods for the treatment of xerostomia9 May 2023US 11,643,419 B2Cellix Bio Private Limited
- 1,3-Oxathiolane derivatives, process for the preparation of 1,3-Oxathiolane derivatives and intermediates thereof16 Sep 2014US 8,835,638 B2Apotex Pharmachem Inc.
- Compounds and methods for fluorescent labeling29 Oct 2013US 8,569,516 B2Elitech Holding B.V.
- Process for the preparation of cis-2-methylspiro (1,3-oxathiolane 5-3′) quinuclidine28 May 2013US 8,450,487 B2Apicore, LLC
- Radiation-sensitive composition, method for forming pattern, and onium salt1 Jan 2026US 2026/0003267 A1Jsr Corporation
- Photochromic cyclic compound and curable composition containing the photochromic cyclic compound4 May 2023US 2023/0133211 A1Tokuyama Corporation
- Compositions and Methods for the Treatment of Xerostomia6 Feb 2020US 2020/0040003 A1Cellix Bio Private Limited
- Process for production of quinuclidine compounds18 Dec 2014US 2014/0371457 A1Daiichi Sankyo Company, Limited
- 1,3-oxathiolane derivatives, process for the preparation of 1,3-oxathiolane derivatives and intermediates thereof17 Oct 2013US 2013/0274474 A1Apotex Pharmachem Inc.
Most cited
By later US patents
- Optical isomers21US 4,981,858 AState of Israel, Represented by Prime Minister's Office Israel Institute for Biological Research · 1991
- Oxathiolanes9US 4,876,260 AState of Israel, Israel Institute of Biological Research · 1989
- Process for labelling sulfur-containing compounds7US 4,900,830 AIsrael Institute for Biological Research · 1990
- Spiro-azabicyclic muscarinic agonists7US 4,992,436 AMerck Sharp & Dohme Corp. · 1991
- Method for isomerization of trans-form 2-methylspiro (1,3-oxathiolane-5,3') q5US 4,861,886 AIshahara Sangyo Kaisha Ltd · 1989