D21H 5/18
Of inorganic fibres with or without cellulose fibres
Official title: {of inorganic fibres with or without cellulose fibres}
D21H5/18 (Of inorganic fibres with or without cellulose fibres) appears on 32 US grants and 0 published applications in this corpus.
Search patents in D21H- Granted patents
- 32
- Published applications
- 0
- Assignees
- 21
- Inventors
- 56
- Latest grant
- 21 Feb 1989
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 6 | 0 |
| 1983 | 4 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Process for preparing sheet composites containing crystalline phosphate fibers21 Feb 1989US 4,806,205 AMonsanto Company
- Process for manufacturing an insulating fibrous piece and piece thus obtained6 Sep 1988US 4,769,194 AProduits Cellulosiques Isolants-Procelis
- High-temperature zirconia insulation and method for making same10 May 1988US 4,743,340 AMartin Marietta Energy Systems, Inc.
- Flocced mineral materials and water-resistant articles made therefrom17 Nov 1987US 4,707,298 AArmstrong World Industries, Inc.
- Fibrous composite materials7 Jul 1987US 4,678,700 AImperial Chemical Industries PLC
No published applications in this class yet.
Most cited
By later US patents
- Asbestiform crystalline calcium sodium or lithium phosphate, preparation and compositions161US 4,346,028 AMonsanto Company · 1982
- Intumescent sheet material103US 4,305,992 AMinnesota Mining and Manufacturing Company · 1981
- High vinyl polybutadiene or styrene-butadiene copolymer93US 4,397,994 AJapan Synthetic Rubber Co., Ltd. · 1983
- Fibrous materials74US 3,996,145 AImperial Chemical Industries PLC · 1976
- Fibrous insulation and process for making the same57US 3,935,060 AMcDonnell Douglas Corporation · 1976