US2690976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphalt blend
Assignee: Standard Oil Co
•
Filing: 1949-12-03
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Granted: 1954-10-05
•
Expires: 1969-12-03
Abstract
No abstract record available.
Inventors
- 👤 John D Bartleson
- 👤 Harley F Hardman
- 👤 Margaret L Sunday
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:59
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
AN ASPHALT BLEND COMPRISING A MAJOR PROPORTION OF AN ASPHALT WHICH DOES NOT ADHERE SATISFACTORILY TO AGGREGATE AND AN AMOUNT WITHIN THE RANGE OF 0.01% TO 1% TO IMPROVE THE ADHESION CHARACTERISTIC OF SAID ASPHALT OF THE PRODUCT OF REACTING A LIQUID OLEFIN WITH PHOSPHORUS PENTASULFIDE IN THE PROPORTIONS OF ABOUT 0.25 TO 0.75 MOL OF PHOSPHORUS PENTASULFIDE PER MOL OF OLEFIN AT A TEMPERATURE WITHIN THE RANGE OF 150* TO 425* F., AND THEN REACTING WITH A HIGHER ALIPHATIC HYDROCARBON AMINE IN THE PROPORTIONS OF ABOUT 0.1 TO 1.5 EQUIVALENTS PER SAPONIFICATION EQUIVALENT OF SAID REACTION PRODUCT.
Claim 2
Dependent Claim
98 words
AN ASPHALT BLEND COMPRISING A MAJOR PROPORTION OF AN ASPHALT WHICH DOES NOT ADHERE SATISFACTORILY TO AGGREGATE AND AN AMOUNT WITHIN THE RANGE OF 0.01% TO 1% TO IMPROVE THE ADHESION CHARACTERISTIC OF SAID ASPHALT OF THE PRODUCT OF REACTING A LIQUID OLEFIN WITH PHOSPHORUS PENTASULFIDE IN THE PROPORTIONS OF ABOUT 0.25 TO 0.75 MOL OF PHOSPHORUS PENTASULFIDE PER MOL OF OLEFIN AT A TEMPERATURE WITHIN THE RANGE OF 150* TO 425* F., AND THEN REACTING WITH A HIGHER ALIPHATIC HYDROCARBON AMINE IN THE PROPORTIONS OF ABOUT 0.1 TO 1.5 EQUIVALENTS PER SAPONIFICATION EQUIVALENT OF SAID REACTION PRODUCT.
References Cited (Backward Citations)
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Cited
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US2409799A
Cited
US2412633A
Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-04 | 1958-04-05 | 1958-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-04 | 1962-04-05 | 1962-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-04 | 1966-04-05 | 1966-10-05 | $7700.00 | Window Closed / Lapsed |