Unitary particulate material surface structure and method and material for preparing the same
Abstract
Abstract A unitary particulate material structure for use in yards around buildings or in roofing, for example, is produced by placing a flexible sheet, such as a polyvinyl plastic sheet, upon the ground or other support material or base. A thin layer of particulate material, such as gravel, crushed rock, stones, pebbles or the like, is placed over the exposed surface of the sheet and rolled level. The structure is completed by applying a binder to the layer of particulate material so that the binder penetrates the interstices of the particulate material. The binder is applied in a dispersion of plastic material, such as synthetic resins, and filler material, such as powdered silica, dispersed in an aqueous medium. Pigments, thickening and drying agents and the like may also be included in the binder dispersion for various applications of the unitary structure produced upon drying of the applied binder dispersion.
Inventors
- 👤 A Thaning
Bibliographic Details
Claims Analysis
Total Claims: 1References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |