US2693425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphalt cement of improved wetting properties
Assignee: Standard Oil Co
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Filing: 1952-04-14
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Granted: 1954-11-02
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Expires: 1972-04-14
Abstract
No abstract record available.
Inventors
- 👤 Harley F Hardman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:28
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/521
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
125 words
AN ASPHALT COMPOSITION CONSISTING ESSENTIALLY OF ASPHALT CEMENT HAVING A SOFTENING POINT WITHIN THE RANGE FROM ABOUT 90 TO 140* F. AND A PENETRATION AT 77* F. OF FROM ABOUT 50 TO ABOUT 220 AND A SMALL AMOUNT OF AN ACIDIC ORGANIC PHOSPHORUS COMPOUND HAVING A PENTAVALENT PHOSPHORUS ATOM, OF WHICH TWO VALENCES ARE TAKEN WITH AN OXY OXYGEN ATOM, FROM ONE TO TWO VALENCES ARE TAKEN WITH AN ORGANIC ETHER RADICAL OF FROM TWO ABOUT 24 CARBON ATOMS CONTAINING ONLY CARBON, HYDROGEN AND OXYGEN AND LINKED TO THE PHOSPHOROUS ATOM THROUGH THE OXY OXYGEN ATOM AND THE REMAINING VALENCES TAKEN WITH HYDROXYL GROUPS HAVING AN ACID HYDROGEN ATOM, SAID COMPOUND BEING IN AN AMOUNT TO IMPROVE THE ADHESION OF THE ASPHALT TO WET STONE.
Claim 2
Dependent Claim
125 words
AN ASPHALT COMPOSITION CONSISTING ESSENTIALLY OF ASPHALT CEMENT HAVING A SOFTENING POINT WITHIN THE RANGE FROM ABOUT 90 TO 140* F. AND A PENETRATION AT 77* F. OF FROM ABOUT 50 TO ABOUT 220 AND A SMALL AMOUNT OF AN ACIDIC ORGANIC PHOSPHORUS COMPOUND HAVING A PENTAVALENT PHOSPHORUS ATOM, OF WHICH TWO VALENCES ARE TAKEN WITH AN OXY OXYGEN ATOM, FROM ONE TO TWO VALENCES ARE TAKEN WITH AN ORGANIC ETHER RADICAL OF FROM TWO ABOUT 24 CARBON ATOMS CONTAINING ONLY CARBON, HYDROGEN AND OXYGEN AND LINKED TO THE PHOSPHOROUS ATOM THROUGH THE OXY OXYGEN ATOM AND THE REMAINING VALENCES TAKEN WITH HYDROXYL GROUPS HAVING AN ACID HYDROGEN ATOM, SAID COMPOUND BEING IN AN AMOUNT TO IMPROVE THE ADHESION OF THE ASPHALT TO WET STONE.
Claim 3
Dependent Claim
47 words
AN ASPHALT COMPOSITION OF HIGH WETTING PROPERTIES CONSISTING ESSENTIALLY OF ASPHALT CEMENT HAVING A SOFTENIGN POINT WITHIN THE RANGE FROM ABOUT 90 TO 140* F. AND A PENETRATION AT 77* F. OF FROM ABOUT 50 TO ABOUT 220, AND ABOUT 2% OF A PYROPHOSPHATE OF THE FORMULA
Claim 4
Dependent Claim
47 words
AN ASPHALT COMPOSITION OF HIGH WETTING PROPERTIES CONSISTING ESSENTIALLY OF ASPHALT CEMENT HAVING A SOFTENIGN POINT WITHIN THE RANGE FROM ABOUT 90 TO 140* F. AND A PENETRATION AT 77* F. OF FROM ABOUT 50 TO ABOUT 220, AND ABOUT 2% OF A PYROPHOSPHATE OF THE 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) | 1957-11-01 | 1958-05-03 | 1958-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-01 | 1962-05-03 | 1962-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-01 | 1966-05-03 | 1966-11-02 | $7700.00 | Window Closed / Lapsed |