US3144424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphalt coating composition containing asphaltenes and atactic polypropylene
Assignee: Sunoco Inc
•
Filing: 1960-11-03
•
Granted: 1964-08-11
•
Expires: 1980-11-03
Abstract
No abstract record available.
Inventors
- 👤 James B Clelland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:27
CPC Classifications
C; C08; C08L; C08L95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A COATING COMPOSITION COMPRISING FROM ABOUT 55 TO ABOUT 75 PERCENT BY WEIGHT ASPHALT, FROM ABOUT 10 TO ABOUT 30 PERCENT BY WEIGHT OF ADDED ASPHALTENES AND FROM ABOUT 10 TO ABOUT 25 PERCENT BY WEIGHT ATACTIC POLYPROPYLENE OBTAINED FROM THE STEREO-SPECIFIC POLYMERIZATION OF PROXYLENE.
Claim 2
Dependent Claim
45 words
A COATING COMPOSITION COMPRISING FROM ABOUT 55 TO ABOUT 75 PERCENT BY WEIGHT ASPHALT, FROM ABOUT 10 TO ABOUT 30 PERCENT BY WEIGHT OF ADDED ASPHALTENES AND FROM ABOUT 10 TO ABOUT 25 PERCENT BY WEIGHT ATACTIC POLYPROPYLENE OBTAINED FROM THE STEREO-SPECIFIC POLYMERIZATION OF PROXYLENE.
References Cited (Backward Citations)
US2252111A
Cited
US2475699A
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US2752264A
Cited
US2871212A
Cited
US2909441A
Cited
US2909498A
Cited
US2940920A
Cited
US3036900A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |