C07C 57/24
Diacetylene or polyacetylene dicarboxylic acids
C07C57/24 (Diacetylene or polyacetylene dicarboxylic acids) appears on 7 US grants and 0 published applications in this corpus.
Search patents in C07C- Granted patents
- 7
- Published applications
- 0
- Assignees
- 3
- Inventors
- 8
- Latest grant
- 23 Jan 2001
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Processless diacetylenic salt films capable of developing a black image23 Jan 2001US 6,177,578 B1ISP Investments Inc.
- Processless diacetylenic salt films capable of developing a black image24 Mar 1998US 5,731,112 AISP Investments Inc.
- Protective coatings for polyacetylenic recording media15 Jan 1991US 4,985,290 AGAF Chemicals Corporation
- Protective coatings for polyacetylenic recording media28 Aug 1990US 4,952,244 AGAF Chemicals Corporation
- Metal salts of polyacetylenic compounds and uses thereof13 Oct 1987US 4,699,997 AAllied Corporation
No published applications in this class yet.
Most cited
By later US patents
- Processless diacetylenic salt films capable of developing a black image26US 5,731,112 AISP Investments Inc. · 1998
- Metal salts of polyacetylenic compounds and uses thereof as ion exchange and thermochromic polymers12US 4,373,032 AAllied Corporation · 1983
- Processless diacetylenic salt films capable of developing a black image10US 6,177,578 B1ISP Investments Inc. · 2001
- Indicator device using metal salts of polyacetylenic compounds7US 4,646,674 AAllied Corporation · 1987
- Protective coatings for polyacetylenic recording media5US 4,952,244 AGAF Chemicals Corporation · 1990