US3179610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joint sealer and paving compositions containing liquid polyurethane and bituminous material
Assignee: Uniroyal Inc
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Filing: 1960-08-29
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Granted: 1965-04-20
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Expires: 1980-08-29
Abstract
No abstract record available.
Inventors
- 👤 Paul R Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:46
CPC Classifications
C; C08; C08L; C08L95/00; C08L75/00; C08L75/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
106 words
THE METHOD OF MAKING A PAVING SURFACE WHICH COMPRISES MIXING MINERAL AGGREGATE WITH A BINDER COMPOSITION COMPRISING A MIXTURE OF A LIQUID POLYURETHANE PREPOLYMER AND A LIQUID BITUMINOUS MATERIAL SELECTED FROM THE GROUP CONSISTING OF ASPHALT AND TARS, SHAPING THE MINERAL AGGREGATE AND BINDER MIXTURE, AND CURING THE POLYURETHANE PREPOLYMER IN ISTU BY REACTION WITH WATER, SAID POLYURETHANE PREPOLYMER BEING THE REACTION PRODUCT OF A POLYISOCYANATE IN MOLAR EXCESS WITH A MATERIAL SELECTED FROM THE GROUP CONSISTING OF CASTOR OIL, DICARBOXYLIC ACID-GLYCOL POLYESTERS AND POLYALKYLENE ETHER POLYALCOHOLS, THE WEIGHT RATIO OF SAID POLYURETHANE PREPOLYMER TO SAID BITUMINOUS MATERIAL BEING IN THE RANGE FROM 1:19 TO 1:3.
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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |