Non-inflammable light-weighing tough board
US4987022A · kind A · utility
5Cited by
7References
3Claims
0Family size
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Inventor
Key dates
| Filing date | Jul 31, 1989 |
| Grant date | Jan 22, 1991 |
| Priority date | — |
| Expiry date | Jul 31, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/662
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Non-inflammable light-weighing tough boards to be used for structural and decorative material in housing and building, such as, decorative ceiling boards, sliding door overlays, partitions and so on, prepared by corrugating cardboard made of phosphated wood pulp and inorganic fiber and processing the so obtained corrugated board by impregnating with a toughening solution of inorganic toughening agent and then drying it.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.