US3374104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphalt compositions and process for preparing same
Assignee: Mobil Oil AS
•
Filing: 1963-10-04
•
Granted: 1968-03-19
•
Expires: 1983-10-04
Abstract
No abstract record available.
Inventors
- 👤 Lester A H Baum
- 👤 Henschel Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:13
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A PROCESS FOR PREPARING HEAT-STABLE THERMAL ASPHALTS WHICH COMPRISES: BLENDING A RESINOUS PITCH MATERIAL DEFICIENT IN HIGHBOILING AROMATIC OILS AND HAVING A SOFTENING POINT (R&B) FROM ABOUT 75*F. TO ABOUT 140*F., A SPECIFIC GRAVITY AT 77*F. FROM ABOUT 1.0 TO ABOUT 1.3 AND A CONRADSON CARBON NUMBER FROM ABOUT 25 TO 45%, WITH A SOLID MATERIAL CONTAINING AT LEAST ABOUT 20% BY WEIGHT OF HIGH BOILING AROMATIC OILS AND HAVING A SOFTENING POINT (R&B) FROM ABOUT 80*F. TO ABOUT 120*F.; A SPECIFIC GRAVITY AT 77*F. FROM ABOUT 1.0 TO ABOUT 1.3; AND A CONRADSON CARBON NUMBER FROM ABOUT 20 TO ABOUT 35*; AND DISTILLING THE RESULTING BLEND TO RECOVER A HEAT-STABLE THERMAL ASPHALT HAVING A SOFTENING POINT (R&B) FROM ABOUT 150*F. TO ABOUT 270*F.
Claim 2
Dependent Claim
124 words
A PROCESS FOR PREPARING HEAT-STABLE THERMAL ASPHALTS WHICH COMPRISES: BLENDING A RESINOUS PITCH MATERIAL DEFICIENT IN HIGHBOILING AROMATIC OILS AND HAVING A SOFTENING POINT (R&B) FROM ABOUT 75*F. TO ABOUT 140*F., A SPECIFIC GRAVITY AT 77*F. FROM ABOUT 1.0 TO ABOUT 1.3 AND A CONRADSON CARBON NUMBER FROM ABOUT 25 TO 45%, WITH A SOLID MATERIAL CONTAINING AT LEAST ABOUT 20% BY WEIGHT OF HIGH BOILING AROMATIC OILS AND HAVING A SOFTENING POINT (R&B) FROM ABOUT 80*F. TO ABOUT 120*F.; A SPECIFIC GRAVITY AT 77*F. FROM ABOUT 1.0 TO ABOUT 1.3; AND A CONRADSON CARBON NUMBER FROM ABOUT 20 TO ABOUT 35*; AND DISTILLING THE RESULTING BLEND TO RECOVER A HEAT-STABLE THERMAL ASPHALT HAVING A SOFTENING POINT (R&B) FROM ABOUT 150*F. TO ABOUT 270*F.
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) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |