US2802798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High grade paving asphalt and method of making same
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1954-07-19
•
Granted: 1957-08-13
•
Expires: 1974-07-19
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:11
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/02; C10C3/026; C08; C08L; C08L95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A METHOD OF IMPROVING THE DUCTILITY OF OXIDIZED ASPHALT WHICH COMPRISES MIXING WITH OXIDIZED ASPHALT EQUAL PROPORTIONS OF, IN AMOUNTS OF 1 TO 3% BY WEIGHT BASED ON THE ASPHALT, A COPOLYMER OF AN ALIPHATIC MONOOLEFIN AND AN AROMATIC MONO-OLEFIN AND A HYDROCARBON OIL HAVING A VICOSITY AT 210*F. BETWEEN 70 AND 1000, AND 10-40% BY WEIGHT OF A VACUUM-REDUCED ASPHALT THE COPOLYMER CONTAINING ABOUT 20 TO 80% OF SAID AROMATIC AROMATIC MONO-OLEFIN.
Claim 2
Independent Claim
73 words
A METHOD OF IMPROVING THE DUCTILITY OF OXIDIZED ASPHALT WHICH COMPRISES MIXING WITH OXIDIZED ASPHALT EQUAL PROPORTIONS OF, IN AMOUNTS OF 1 TO 3% BY WEIGHT BASED ON THE ASPHALT, A COPOLYMER OF AN ALIPHATIC MONOOLEFIN AND AN AROMATIC MONO-OLEFIN AND A HYDROCARBON OIL HAVING A VICOSITY AT 210*F. BETWEEN 70 AND 1000, AND 10-40% BY WEIGHT OF A VACUUM-REDUCED ASPHALT THE COPOLYMER CONTAINING ABOUT 20 TO 80% OF SAID AROMATIC AROMATIC MONO-OLEFIN.
References Cited (Backward Citations)
FR927636A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |