US3014809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphaltic composition
Assignee: Richfield Oil Corp
•
Filing: 1958-10-02
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Granted: 1961-12-26
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Expires: 1978-10-02
Abstract
No abstract record available.
Inventors
- 👤 Robert P Hoyt
- 👤 Gene C Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:12
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
AN ASPHALT COMPOSITION WHICH CONSISTS ESSENTIALLY OF A PENETRATION GRADE PETROLEUM ASPHALT HAVING INCORPORATED THEREIN ABOUT 0.1 TO 10% BY WEIGHT OF A LITHIUM STEARATE TO INCREASE THE SOFTENING POINT OF THE ASPHALT FOR A GIVEN PENETRATION.
Claim 2
Dependent Claim
37 words
AN ASPHALT COMPOSITION WHICH CONSISTS ESSENTIALLY OF A PENETRATION GRADE PETROLEUM ASPHALT HAVING INCORPORATED THEREIN ABOUT 0.1 TO 10% BY WEIGHT OF A LITHIUM STEARATE TO INCREASE THE SOFTENING POINT OF THE ASPHALT FOR A GIVEN PENETRATION.
References Cited (Backward Citations)
GB404939A
Cited
US2389926A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-25 | 1965-06-26 | 1965-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-25 | 1969-06-26 | 1969-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-25 | 1973-06-26 | 1973-12-26 | $7700.00 | Window Closed / Lapsed |