Patent US3431128A successfully refreshed from Google Patents.
US3431128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphaltic coating compositions containing n-alkyl amino acids
Assignee: Chevron USA Inc
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Filing: 1964-03-25
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Granted: 1969-03-04
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Expires: 1984-03-25
Abstract
No abstract record available.
Inventors
- 👤 Thornton K Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:47
CPC Classifications
C; C09; C09D; C09D195/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
AS A ROOF COATING MATERIAL OF SUPERIOR WEATHERING ABILITY, AN AIR BLOWN ASPHALTIC COMPOSITION HAVING A RING AND BALL SOFTENING POINT IN THE RANGE OF 130*F. TO 250* F. AND CONTIANING FROM 0.1% TO 10% BY WEIGHT OF AN N-ALKYL AMINO ACID OF THE GENERAL FORMULA
Claim 2
Dependent Claim
46 words
AS A ROOF COATING MATERIAL OF SUPERIOR WEATHERING ABILITY, AN AIR BLOWN ASPHALTIC COMPOSITION HAVING A RING AND BALL SOFTENING POINT IN THE RANGE OF 130*F. TO 250* F. AND CONTIANING FROM 0.1% TO 10% BY WEIGHT OF AN N-ALKYL AMINO ACID OF THE GENERAL FORMULA
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) | 1972-03-03 | 1972-09-02 | 1973-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-03 | 1976-09-02 | 1977-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-03 | 1980-09-02 | 1981-03-04 | $7700.00 | Window Closed / Lapsed |