G11B 5/7027
Graft polymers
Official title: {Graft polymers}
G11B5/7027 (Graft polymers) appears on 14 US grants and 1 published applications in this corpus.
Search patents in G11B- Granted patents
- 14
- Published applications
- 1
- Assignees
- 8
- Inventors
- 29
- Latest grant
- 31 Oct 2000
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 4 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Carboxylic acid functional polyurethane polymers and blends thereof used in magnetic recording media31 Oct 2000US 6,139,966 AImation Corp.
- Carboxylic acid functional polyurethane polymers and blends thereof used in magnetic recording media23 Feb 1999US 5,874,502 AMinnesota Mining and Manufacturing Company
- Carboxylic acid functional polyurethane polymers and blends thereof used in magnetic recording media2 Jun 1998US 5,759,666 AMinnesota Mining and Manufacturing Company
- Video recording tapes suitable for high speed contact duplication6 Jan 1998US 5,705,253 AMinnesota Mining and Manufacturing Company
- Process for producing magnetic recording medium, magnetic paint, and magnetic disk30 Oct 1990US 4,966,797 AHitachi, Ltd.
Most cited
By later US patents
- Ion exchange processes and products21US 4,246,355 AICI Australia Limited · 1981
- Process for producing magnetic recording medium, magnetic paint, and magnetic disk17US 4,966,797 AHitachi, Ltd. · 1990
- Carboxylic acid-grafted phenoxy resins13US 4,638,038 AUnion Carbide Corporation · 1987
- Magnetic recording medium11US 4,520,079 ASony Corporation · 1985
- Carboxylic acid functional polyurethane polymers and blends thereof used in magnetic recording media10US 5,759,666 AMinnesota Mining and Manufacturing Company · 1998