C07C 31/245
Pentaerythritol
Official title: {Pentaerythritol}
C07C31/245 (Pentaerythritol) appears on 5 US grants and 1 published applications in this corpus.
Search patents in C07C- Granted patents
- 5
- Published applications
- 1
- Assignees
- 4
- Inventors
- 12
- Latest grant
- 30 Jun 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 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 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Process for producing pentaerythritol mercaptocarboxylic acid ester, polymerizable composition, resin, optical material, and lens30 Jun 2020US 10,696,627 B2Mitsui Chemicals, Inc.
- Pentaerythritol slurries25 Aug 1987US 4,689,173 AInternational Minerals & Chemical Corp.
- Treatment of waste stream from pentaerythritol manufacture16 Sep 1986US 4,612,389 AVirginia Chemicals Inc.
- Process for refining waste liquor29 Nov 1983US 4,418,226 AInternational Minerals & Chemical Corp.
- Process for producing pentaerythritol6 Jul 1976US 3,968,176 AMitsui Toatsu Chemicals, Inc.
Most cited
By later US patents