US3692733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resin coated sand
Assignee: Unilever Bestfoods North America
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Filing: 1971-03-08
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Granted: 1972-09-19
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Expires: 1991-03-08
Abstract
Abstract A RESIN COATED SAND EXHIBITING LOW DUST LEVELS CONSISTING ESSENTIALLY OF ABOUT 1,000 PARTS OF RESIN COATED SAND, AND FROM ABOUT 0.01 TO ABOUT 1.0 PARTS OF SILICONE FLUID.
Inventors
- 👤 Calvin Keith Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:55
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/20; B22C1/22; B22C1/205
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |