US2780607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic bitumen compositions
Assignee: Individual
•
Filing: 1952-03-14
•
Granted: 1957-02-05
•
Expires: 1972-03-14
Abstract
No abstract record available.
Inventors
- 👤 George W Rappleyea
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:06
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A COMPOSITION COMPRISING A HEAT POLYMERIZED PRODUCT OF A MIXTURE OF AN ASPHALTIC FUEL OIL CONTAINING ABOUT 10 TO 60% ASPHALT, A SUBSTANTIALLY DRY, SOLID CARBOHYDRATE MATERIAL IN AMOUNT UP TO ABOUT 75% BY WEIGHT, SAID POLYMERIZATION HAVING BEEN ACCOMPLISHED IN THE PRESENCE OF A CATALYTIC AGENT SELECTED FROM THE GROUP CONSISTING OF SULFUR, SULFURIC ACID,LIME, CAUSTIC SODA AND CAUSTIC POTASH.
Claim 2
Dependent Claim
61 words
A COMPOSITION COMPRISING A HEAT POLYMERIZED PRODUCT OF A MIXTURE OF AN ASPHALTIC FUEL OIL CONTAINING ABOUT 10 TO 60% ASPHALT, A SUBSTANTIALLY DRY, SOLID CARBOHYDRATE MATERIAL IN AMOUNT UP TO ABOUT 75% BY WEIGHT, SAID POLYMERIZATION HAVING BEEN ACCOMPLISHED IN THE PRESENCE OF A CATALYTIC AGENT SELECTED FROM THE GROUP CONSISTING OF SULFUR, SULFURIC ACID,LIME, CAUSTIC SODA AND CAUSTIC POTASH.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-05 | 1960-08-06 | 1961-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-05 | 1964-08-06 | 1965-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-05 | 1968-08-06 | 1969-02-05 | $7700.00 | Window Closed / Lapsed |