C08G 73/20
Pyrrones
C08G73/20 (Pyrrones) appears on 30 US grants and 5 published applications in this corpus.
Search patents in C08G- Granted patents
- 30
- Published applications
- 5
- Assignees
- 16
- Inventors
- 40
- Latest grant
- 21 Apr 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 3 | 0 |
| 2016 | 4 | 2 |
| 2017 | 1 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Coaxial semiconductive organic nanofibers and electrospinning fabrication thereof21 Apr 2020US 10,629,814 B2University of South Florida
- Thin-film electro devices based on derivatized poly (benzo-isimidazobenzophenanthroline) ladder polymers31 Jan 2017US 9,558,892 B1The United States of America as represented by the Secretary of the Navy
- PI polyamide20 Dec 2016US 9,522,978 B2Nihon University
- Thixotropic composition20 Dec 2016US 9,525,135 B2Xerox Corporation
- Thin-film electro devices based on derivatized poly (benzo-isimidazobenzophenanthroline) ladder polymers28 Jun 2016US 9,379,328 B1The United States of America as represented by the Secretary of the Navy
- Process for preparing polybenzimidazoles17 Sep 2020US 2020/0291183 A1
- Coaxial semiconductive organic nanofibers and electrospinning fabrication thereof9 Aug 2018US 2018/0226582 A1University of South Florida
- Coatable Polymer Polarizer15 Sep 2016US 2016/0266292 A1Light Polymers Holding
- Novel pi polyamide4 Feb 2016US 2016/0032057 A1Nihon University
- Thixotropic composition31 Jul 2014US 2014/0209840 A1Xerox Corporation
Most cited
By later US patents
- Reactive end-capping agent, addition-curable quinoxaline resin oligomer and intermediate material for fiber-reinforced composite30US 4,739,075 ADirector-General of Agency of Industrial Science and Technology · 1988
- Triamino pyridine compounds20US 4,000,146 AHorizons Incorporated, a division of Horizons Research Incorporated · 1976
- Substituted tetraamino heterocyclic compounds, useful in the preparation of substituted polybenzimidazoles and poly-imidazopyrrolones19US 3,943,125 AHorizons Incorporated, a division of Horizons Research Incorporated · 1976
- Perfluoroisopropylidene dianhydride and polyimides prepared therefrom16US 4,196,277 ATRW Inc. · 1980
- Trimerization of aromatic nitriles12US 4,061,856 AThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration · 1977