Building material made of a mixture of polyester resin and rice hulls
Abstract
Abstract THIS INVENTION RELATES TO BUILDING MATERIALS MADE WITH A MIXTURE OF RICE HULLS AND POLYESTER RESIN WHICH PREFERABLY INCLUDES FINE INORGANIC PARTICLES IN THE 0.001 TO 20 MICRON RANGE TO INCREASE THE STRENTH OF THE PRODUCT. THE RICE HULLS, WHICH MAY BE EITHER GROUND OR WHOLE, OR A MIXTURE OF BOTH, ARE THOROUGHLY COATED WITH RESIN OR POLYESTER RESIN CEMENT, AND BONDED TOGETHER MAKE A SOLID PRODUCT WHICH IS STRONG, DURABLE, INEXPENSIVE, LIGHTWEIGHT, ACID RESISTANT, AND A GOOD ELECTRICAL, THERMAL AND SOUND INSULATOR. THE PRODUCT IS IDEAL FOR MOLDING ARTICLES SUCH AS DRAINBOARDS, WALL TILES, SHINGLES, CORRUGATED SHEETS, SIDING, ROOFING, DECK PANELS, SILO DOORS, AND FRAMES. THE PRODUCT CAN BE USED EITHER AS IT COMES FROM THE MOLD, OR IT CAN BE DECORATED OR COLORED WITH A COATING OF A MIXTURE OF POLYESTER RESIN AND PIGMENT.
Inventors
- 👤 William R Varnell
- 👤 Mance R Mitchell
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |