Method of testing the efficiency of gas mask filters using poly-alpha olefin aerosol mixtures
US5059350A · kind A · utility
4Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 31, 1990 |
| Grant date | Oct 22, 1991 |
| Priority date | — |
| Expiry date | Dec 31, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2015/084
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved process of passing an aerosol mixture through a filter. The asol mixture solely being a poly alpha olefin having a content of hydrocarbon % by volume of: ______________________________________ % Carbon atoms, chain length ______________________________________ A. 30.9 30 B. 42.8 40 C. 20.4 50 D. 4.8 60 E. 1.1 70. ______________________________________
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.