E21F 5/16
Layers of hygroscopic or other salts deposited on floors, walls, or the
Official title: Layers of hygroscopic or other salts deposited on floors, walls, or the like, for binding dust; Deposition of such layers (dust-absorbing materials in general C09K3/22)
E21F5/16 (Layers of hygroscopic or other salts deposited on floors, walls, or the) appears on 4 US grants and 0 published applications in this corpus.
Search patents in E21F- Granted patents
- 4
- Published applications
- 0
- Assignees
- 4
- Inventors
- 8
- Latest grant
- 29 Nov 1983
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Dust control29 Nov 1983US 4,417,992 ANalco Chemical Company
- Method for reducing the amount of coal dust in the environment surrounding coal mining19 Apr 1983US 4,380,459 AAtlantic Richfield Company
- Process for suppressing dust in mines26 Feb 1980US 4,190,292 AChemische Fabrik Kalk GmbH
- Dust entrapment composition and method therefor26 Jul 1977US 4,038,443 AAkzona Incorporated
No published applications in this class yet.
Most cited
By later US patents
- Dust control115US 4,417,992 ANalco Chemical Company · 1983
- Method for reducing the amount of coal dust in the environment surrounding coal mining37US 4,380,459 AAtlantic Richfield Company · 1983
- Dust entrapment composition and method therefor20US 4,038,443 AAkzona Incorporated · 1977
- Process for suppressing dust in mines3US 4,190,292 AChemische Fabrik Kalk GmbH · 1980