C04B 35/63412
Coumarone polymers
Official title: {Coumarone polymers}
C04B35/63412 (Coumarone polymers) appears on 6 US grants and 0 published applications in this corpus.
Search patents in C04B- Granted patents
- 6
- Published applications
- 0
- Assignees
- 5
- Inventors
- 20
- Latest grant
- 28 Oct 1997
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 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 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Surface-treating agent for high-temperature refractory material and method for treatment therewith28 Oct 1997US 5,681,383 A
- Method of casting powder materials2 Jul 1991US 5,028,363 ANKK Corporation
- Process for vacuum-tight sealing of a ceramic tube9 Jan 1990US 4,892,498 AHoechst CeramTec Aktiengesellschaft
- Decorative flatware handles and process for their preparation4 Jun 1985US 4,521,356 ARosenthal Aktiengesellschaft
- Tap hole mixes14 Apr 1981US 4,261,878 ANippon Oil Co., Ltd.
No published applications in this class yet.
Most cited
By later US patents
- Decorative flatware handles and process for their preparation17US 4,521,356 ARosenthal Aktiengesellschaft · 1985
- Method of casting powder materials10US 5,028,363 ANKK Corporation · 1991
- Tap hole mixes7US 4,261,878 ANippon Oil Co., Ltd. · 1981
- Process for vacuum-tight sealing of a ceramic tube7US 4,892,498 AHoechst CeramTec Aktiengesellschaft · 1990
- Amorphous refractory compositions3US 4,220,474 ANippon Oil Co., Ltd. · 1980