Y10S 521/921
Preparing a nonpolyurethane cellular particle from a nonparticulate material
Y10S521/921 (Preparing a nonpolyurethane cellular particle from a nonparticulate material) appears on 19 US grants and 0 published applications in this corpus.
Search patents in Y10S- Granted patents
- 19
- Published applications
- 0
- Assignees
- 14
- Inventors
- 30
- Latest grant
- 23 Feb 1999
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Polymer ahoy material and process for production thereof23 Feb 1999US 5,874,521 AUniversity Technologies International Inc.
- Aqueous air foams of polyhydroxy polymer23 Jun 1992US 5,124,363 AMinnesota Mining and Manufacturing Company
- Treatment of hazardous materials with aqueous air foam of polyhydroxy polymer25 Jun 1991US 5,026,735 AMinnesota Mining and Manufacturing Company
- Method of making highly adsorptive copolymers9 Oct 1990US 4,962,133 ADow Corning Corporation
- Process for the production of expanded particles of a polypropylene resin30 Jun 1987US 4,676,939 AJapan Styrene Paper Corporation
No published applications in this class yet.
Most cited
By later US patents
- Crosslinked, porous, polyacrylate beads86US 3,957,741 ACalifornia Institute of Technology · 1976
- Partially pyrolyzed macroporous polymer particles having multimodal pore distribution with macropores ranging from 50-100,000 angstroms62US 4,040,990 ARohm and Haas Company · 1977
- Method of making highly adsorptive copolymers46US 4,962,133 ADow Corning Corporation · 1990
- Treatment of hazardous materials with aqueous air foam of polyhydroxy polymer41US 5,026,735 AMinnesota Mining and Manufacturing Company · 1991
- PVA membrane and method for preparing the same38US 4,073,733 AKuraray Co., Ltd. · 1978