Bonded adsorbent structures and respirators incorporating same
US5033465A · kind A · utility
69Cited by
16References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 8, 1989 |
| Grant date | Jul 23, 1991 |
| Priority date | — |
| Expiry date | Jun 8, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J20/2803
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Shaped porous filtering structures of substantially uniform thickness and density particularly suited for filtration of gases and vapors comprising spaced adsorbent granules unified into a solid, self-sustaining, unitary, impact-resistant body by adherent binder particles. Respirators incorporating such structures as the gas and vapor filtration elements and methods for making the shaped porous filtering structures are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.