C07C 251/22
Quinone imines
C07C251/22 (Quinone imines) appears on 27 US grants and 23 published applications in this corpus.
Search patents in C07C- Granted patents
- 27
- Published applications
- 23
- Assignees
- 25
- Inventors
- 79
- Latest grant
- 5 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 5 | 0 |
| 2001 | 2 | 0 |
| 2002 | 4 | 0 |
| 2003 | 1 | 2 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 3 |
| 2009 | 0 | 2 |
| 2010 | 2 | 1 |
| 2011 | 3 | 3 |
| 2012 | 0 | 0 |
| 2013 | 1 | 2 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 1 | 2 |
| 2017 | 1 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 2 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Compounds, compositions, methods of using, and methods for preparing compounds5 Aug 2025US 12,377,069 B2The Institute for Stem Cell Biology and Regenerative Medicine (Instem)
- Mass spectrometric identification and/or quantitation of catecholamines using aminopyrazoles8 May 2018US 9,964,552 B2DH Technologies Development Pte. Ltd.
- N-(4-(bis(4-(dimethylamino)phenyl)methylene)-8-(dimethylamino)14 Feb 2017US 9,567,291 B2Emory University
- Use of zwitterionic molecules for forming a hole or electron transport layer24 May 2016US 9,349,958 B2Centre National De La Recherche Scientifique
- Condensed polycyclic aromatic compound, production process of same, and positive electrode active material for lithium ion secondary battery containing same6 Jan 2015US 8,927,157 B2Keio University
- Compounds, compositions, methods of using, and methods for preparing compounds2 Jul 2026US 2026/0183260 A1The Institute for Stem Cell Biology and Regenerative Medicine (Instem)
- Method of preparation and properties of pure hypochlorous acid, hocl18 Jul 2024US 2024/0239657 A1Walker Cancer Research Institute, Inc.
- Compounds, compositions, methods of using, and methods for preparing compounds30 May 2024US 2024/0173288 A1The Institute for Stem Cell Biology and Regenerative Medicine (Instem)
- Chemicals and use of hypohalites in mechanism-based selective dual radical organic syntheses30 Mar 2023US 2023/0102045 A1Walker Cancer Research Institute, Inc.
- Compounds, compositions, methods of using, and methods for preparing compounds2 Sep 2021US 2021/0267932 A1The Institute for Stem Cell Biology and Regenerative Medicine (Instem)
Most cited
By later US patents
- Fullerene derivatives32US 6,380,434 B12002
- Materials with ferromagnetic properties comprising organic molecules with magnetic properties, and methods for making same13US 6,262,306 B1Gemplus · 2001
- Polymerization inhibitor for vinyl-containing materials10US 6,447,649 B1GE Betz, Inc. · 2002
- Polyorganofullerenes9US 6,020,523 A2000
- Polyorganofullerenes9US 6,046,361 A2000