Laminate sheet material
US5670238A · kind A · utility
15Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1995 |
| Grant date | Sep 23, 1997 |
| Priority date | — |
| Expiry date | Jun 14, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31978
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A composite laminate member includes outer layers of a polymer cellulose material sandwiched about a core of corrugated cardboard, the core of corrugated cardboard having flutes running in a plane parallel to the outer layers. An exemplary embodiment includes a filter medium separator for use in air filter constructions including a composite laminate member comprising outer layers of a polymer cellulose material and a fire retardant additive sandwiched about a core of corrugated cardboard.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.