US2592564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphalt cutback containing an aliphatic phosphoric acid ester
Assignee: Standard Oil Co
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Filing: 1948-05-22
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Granted: 1952-04-15
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Expires: 1968-05-22
Abstract
No abstract record available.
Inventors
- 👤 Harley F Hardman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:16
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/521
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
AN ASPHALT COMPOSITION CONSISITNG ESSENTIALLY OF CUTBACK ASPHALT AND A PHOSPHORIC ACID ESTER OF AN ALIPHATIC HYDROXY COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALCOHOLS, HYDROXY ESTERS AND HYDROXY ACIDS CONTAINING ONLY CARBON HYDROGEN AND OXYGEN AND HAVING 10 TO 18 CARBON ATOMS, SAID PHOSPHORIC ACID ESTER HAVING AN ACID HYDROGEN ATOM IN THE PHOSPHORIC ACID RADICAL AND BEING IN AN AMOUNT TO IMPROVE THE ADHERENCE OF THE CUTBACK ASPHALT TO WET STONE.
Claim 2
Dependent Claim
73 words
AN ASPHALT COMPOSITION CONSISITNG ESSENTIALLY OF CUTBACK ASPHALT AND A PHOSPHORIC ACID ESTER OF AN ALIPHATIC HYDROXY COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALCOHOLS, HYDROXY ESTERS AND HYDROXY ACIDS CONTAINING ONLY CARBON HYDROGEN AND OXYGEN AND HAVING 10 TO 18 CARBON ATOMS, SAID PHOSPHORIC ACID ESTER HAVING AN ACID HYDROGEN ATOM IN THE PHOSPHORIC ACID RADICAL AND BEING IN AN AMOUNT TO IMPROVE THE ADHERENCE OF THE CUTBACK ASPHALT TO WET STONE.
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) | 1955-04-15 | 1955-10-15 | 1956-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-15 | 1959-10-15 | 1960-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-15 | 1963-10-15 | 1964-04-15 | $7700.00 | Window Closed / Lapsed |