US2935486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphalt, isobutylene-styrene copolymer, hydrocarbon oil adhesive for laminates
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1955-07-05
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Granted: 1960-05-03
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Expires: 1975-07-05
Abstract
No abstract record available.
Inventors
- 👤 Andrew F Sayko
- 👤 Raymond G Newberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:29
CPC Classifications
C; C09; C09J; C09J195/00; C08; C08L; C08L2666/00; C08L2666/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
AN IMPROVED ASPHALTIC COMPOSITION COMPRISING AN ASPHALT TO WHICH HAS BEEN ADDED FROM ABOUT 0.25% TO ABOUT 10% BY WEIGHT, BASED UPON THE ASPHALT, OF A COPOLYMER OF FROM ABOUT 20 TO ABOUT 80 WT. PERCENT OF STYRENE AND ABOUT 80 TO ABOUT 20 WT. PERCENT OF ISOBUTYLENE, SAID COPOLYMER HAVING AN INTRINSIC VISCOSITY GREATER THAN 0.7 AND HAVING BEEN PREPARED BY COPOLYMERIZATION AT TEMPERATURES BELOW -50* C., AND FROM ABOUT 300 TO ABOUT 500 WT. PERCENT, BASED UPON THE COPOLYMER OF A HYDROCARBON OIL CONTAINING FROM 0 TO 30 WT. PERCENT AROMATICS AND HAVING A VISCOSITY AT 100* F. BETWEEN ABOUT 50 AND 500 SAYBOLT UNIVERSAL SECONDS.
Claim 2
Dependent Claim
108 words
AN IMPROVED ASPHALTIC COMPOSITION COMPRISING AN ASPHALT TO WHICH HAS BEEN ADDED FROM ABOUT 0.25% TO ABOUT 10% BY WEIGHT, BASED UPON THE ASPHALT, OF A COPOLYMER OF FROM ABOUT 20 TO ABOUT 80 WT. PERCENT OF STYRENE AND ABOUT 80 TO ABOUT 20 WT. PERCENT OF ISOBUTYLENE, SAID COPOLYMER HAVING AN INTRINSIC VISCOSITY GREATER THAN 0.7 AND HAVING BEEN PREPARED BY COPOLYMERIZATION AT TEMPERATURES BELOW -50* C., AND FROM ABOUT 300 TO ABOUT 500 WT. PERCENT, BASED UPON THE COPOLYMER OF A HYDROCARBON OIL CONTAINING FROM 0 TO 30 WT. PERCENT AROMATICS AND HAVING A VISCOSITY AT 100* F. BETWEEN ABOUT 50 AND 500 SAYBOLT UNIVERSAL SECONDS.
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) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |