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Patent US2779745A successfully refreshed from Google Patents.
US2779745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wax-coated synthetic rubber crumb coagula for incorporation in asphalt
Assignee: Uniroyal Inc
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Filing: 1953-12-21
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Granted: 1957-01-29
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Expires: 1973-12-21
Abstract
No abstract record available.
Inventors
- 👤 Louis H Howland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:25
CPC Classifications
C; C08; C08L; C08L9/00; C08L95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
THE METHOD OF PREPARING AN ASPHALT-SYNTHETIC RUBBER MIX WHICH COMPRISES HEATING AT A TEMPERATURE ABOVE THE SOFTENING POINT OF THE ASPHALT, A MIXTURE OF THE ASPHALT AND A BUTADIENE POLYMER SYNTHETIC RUBBER IN CRUMB FORM COATED WITH MATERIAL SELECTED FROM THE GROUP CONSISTING OF MINERAL, VEGETABLE AND ANIMAL WAXES.
Claim 2
Independent Claim
49 words
THE METHOD OF PREPARING AN ASPHALT-SYNTHETIC RUBBER MIX WHICH COMPRISES HEATING AT A TEMPERATURE ABOVE THE SOFTENING POINT OF THE ASPHALT, A MIXTURE OF THE ASPHALT AND A BUTADIENE POLYMER SYNTHETIC RUBBER IN CRUMB FORM COATED WITH MATERIAL SELECTED FROM THE GROUP CONSISTING OF MINERAL, VEGETABLE AND ANIMAL WAXES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-29 | 1960-07-30 | 1961-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-29 | 1964-07-30 | 1965-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-29 | 1968-07-30 | 1969-01-29 | $7700.00 | Window Closed / Lapsed |