US2582823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphalt composition
Assignee: Shell Development Co
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Filing: 1948-03-23
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Granted: 1952-01-15
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Expires: 1968-03-23
Abstract
No abstract record available.
Inventors
- 👤 Frederick M Fowkes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:36
CPC Classifications
C; C08; C08L; C08L95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
AN ASPHALT COMPOSITION COMPRISING AN ASPHALTIC MATERIAL, A SOLID AND AT THE INTERFACE THEREBETWEEN AN AMINE SALT OF A WATER-SOLUBLE ACID-ACTING AGENT WHEREIN THE AMINE IS SELECTED FROM THE GROUP CONSISTING OF (1) A LONG CHAIN ALIPHATIC HYDROCARBON AMINE AND (2) AN OLEIC ACID PARTIAL AMIDE OF A HYDROGENATED POLYAMINE CONDENSATION PRODUCT OF ACROLEIN AND AMMONIA AND THE ACID-ACTING AGENT IS COMPOSED OF A POLYVALENT ANION AND ONLY MONOVALENT CATIONS, SAID AMINE SALT BEING SUBSTANTIALLY INSOLUBLE BOTH IN WATER AND IN ASPHALT AND BEING PRESENT AT LEAST IN AN AMOUNT SUFFICIENT TO IMPROVE THE ADHESION OF THE ASPHALT TO THE SOLID.
Claim 2
Dependent Claim
101 words
AN ASPHALT COMPOSITION COMPRISING AN ASPHALTIC MATERIAL, A SOLID AND AT THE INTERFACE THEREBETWEEN AN AMINE SALT OF A WATER-SOLUBLE ACID-ACTING AGENT WHEREIN THE AMINE IS SELECTED FROM THE GROUP CONSISTING OF (1) A LONG CHAIN ALIPHATIC HYDROCARBON AMINE AND (2) AN OLEIC ACID PARTIAL AMIDE OF A HYDROGENATED POLYAMINE CONDENSATION PRODUCT OF ACROLEIN AND AMMONIA AND THE ACID-ACTING AGENT IS COMPOSED OF A POLYVALENT ANION AND ONLY MONOVALENT CATIONS, SAID AMINE SALT BEING SUBSTANTIALLY INSOLUBLE BOTH IN WATER AND IN ASPHALT AND BEING PRESENT AT LEAST IN AN AMOUNT SUFFICIENT TO IMPROVE THE ADHESION OF THE ASPHALT TO THE SOLID.
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) | 1955-01-14 | 1955-07-16 | 1956-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-14 | 1959-07-16 | 1960-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-14 | 1963-07-16 | 1964-01-15 | $7700.00 | Window Closed / Lapsed |