US3705837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Woodflake composition for panels and method of making same
Assignee: WR Grace and Co
•
Filing: 1970-06-16
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Granted: 1972-12-12
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Expires: 1990-06-16
Abstract
Abstract A SPECIALIZED WOOD FLAKE SIZE IS DESCRIBED WHICH MAY BE COATED WITH A BINDER SUCH AS PORTLAND CEMENT, CAST AND BONDED TOGERTHER TO FORM A LIGHTWEIGHT CEMENTED PRODUCT. THE WOODFLAKE SIZE AND SHAPE PROVIDES ADVANTAGES IN MAKING THE CEMENTED PRODUCT. THE PRODUCT ITSELF IS ESPECIALLY ATTRACTIVE FOR USE IN THE CONSTRUCTION INDUSTRY BECAUSE OF ITS STRENGHT AND ECOMOMY AND THE FACT THAT IT IS NAILABLE, HAS GOOD THERMAL INSULATION AND ACOUSTICAL PROPERTIES, RESPONDS WELL TO MILLING AND CUTTING AND IS ATTRACTIVE IN APPEARANCE. A NOVEL METHOD IS ALSO DESCRIBED FOR MAKING THE PRODUCT.
Inventors
- 👤 Charles S Breslauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:01
CPC Classifications
B; B28; B28B; B28B1/00; B28B1/52; B28B1/525; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-12 | 1976-06-12 | 1976-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-12 | 1980-06-12 | 1980-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-12 | 1984-06-12 | 1984-12-12 | $7700.00 | Window Closed / Lapsed |