C07C 35/045
Containing a four-membered ring
Official title: {containing a four-membered ring}
C07C35/045 (Containing a four-membered ring) appears on 7 US grants and 2 published applications in this corpus.
Search patents in C07C- Granted patents
- 7
- Published applications
- 2
- Assignees
- 5
- Inventors
- 10
- Latest grant
- 5 May 2015
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 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 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Process for isolating crystallized 2,2,4,4 tetramethyl-1,3-cyclobutanediol (TMCD) particles utilizing pressure filtration5 May 2015US 9,024,080 B2Eastman Chemical Company
- Process for isolating crystallized 2,2,4,4-tetramethyl-1,3-cyclobutanediol (TMCD) particles utilizing pressure filtration14 Oct 2014US 8,859,825 B2Eastman Specialties Holdings Corporation
- Process for the manufacture of 2,2,4,4-tetramethylcyclobutanediol2 Nov 1993US 5,258,556 AEastman Kodak Company
- Process for the manufacture of 2,2,4,4-tetramethycyclobutanediol8 Dec 1992US 5,169,994 AEastman Kodak Company
- Novel cyclopropanecarboxylic acids and esters3 Jun 1980US 4,206,140 ARoussel Uclaf
- Process for isolating crystallized 2,2,4,4 tetramethyl-1,3-cyclobutanediol (tmcd) particles utilizing pressure filtration25 Dec 2014US 2014/0378716 A1Eastman Chemical Company
- Process for Isolating Crystallized 2,2,4,4-Tetramethyl-1,3-Cyclobutanediol (TMCD) Particles Utilizing Pressure Filtration21 Jun 2012US 2012/0157720 A1Eastman Chemical Company
Most cited
By later US patents
- Process for the manufacture of 2,2,4,4-tetramethycyclobutanediol80US 5,169,994 AEastman Kodak Company · 1992
- Process for the manufacture of 2,2,4,4-tetramethylcyclobutanediol74US 5,258,556 AEastman Kodak Company · 1993
- Process for isolating crystallized 2,2,4,4-tetramethyl-1,3-cyclobutanediol (TMCD) particles utilizing pressure filtration5US 8,859,825 B2Eastman Specialties Holdings Corporation · 2014
- N-protected-.alpha.-amino acid compounds3US 3,948,971 AMerck & Co., Inc. · 1976
- Process for isolating crystallized 2,2,4,4 tetramethyl-1,3-cyclobutanediol (TMCD) particles utilizing pressure filtration1US 9,024,080 B2Eastman Chemical Company · 2015