US3087887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing of specification paving and industrial asphalts
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1959-12-21
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Granted: 1963-04-30
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Expires: 1979-12-21
Abstract
No abstract record available.
Inventors
- 👤 Luke W Corbett
- 👤 Adams Clark Edward
- 👤 Hamner Glen Porter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:18
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A PROCESS FOR PREPARING AN IMPROVED ASPHALT WHICH PROCESS COMPRISES CONTACTING A PETROLEUM FRACTION CONTAINING ASPHALTNESS WITH A LIQUID PARAFFIN INTO WHICH SAID ASPHALTNESS PRECIPITATE AS SOLIDS, SEPARATING SAID ASPHALTENES FROM SAID FRACTION SLURRIED IN SAID LIQUID PARAFFIN, SEPARATING SAID ASPHALTNESS FROM SAID PARAFFIN, ADMIXING SAID ASPHALTENES WITH A HYDROCARBON SOLVENT, BLENDING THE RESULTING SOLUTION OF ASPHALTENES WITH AN ASPHALT RESIUUM CONTAINING BOTH ASPHALTENES AND PETROLENES AND SEPARTING AND HYDROCARBON SOLVENT FROM THE RESULTING IMPROVED ASPHALT, SAID SOLUTION OF ASPHALTENES BEING BLENDED WITH SAID ASPHALT RESIDUUM IN AN AMOUNT SUCH THAT THE ASPHALTENES ADDED TO SAID ASPHALT RESIDUUM COMPRISES ABOUT 2 TO 50 WT. PERCENT OF SAID IMPROVED ASPHALT.
Claim 2
Dependent Claim
109 words
A PROCESS FOR PREPARING AN IMPROVED ASPHALT WHICH PROCESS COMPRISES CONTACTING A PETROLEUM FRACTION CONTAINING ASPHALTNESS WITH A LIQUID PARAFFIN INTO WHICH SAID ASPHALTNESS PRECIPITATE AS SOLIDS, SEPARATING SAID ASPHALTENES FROM SAID FRACTION SLURRIED IN SAID LIQUID PARAFFIN, SEPARATING SAID ASPHALTNESS FROM SAID PARAFFIN, ADMIXING SAID ASPHALTENES WITH A HYDROCARBON SOLVENT, BLENDING THE RESULTING SOLUTION OF ASPHALTENES WITH AN ASPHALT RESIUUM CONTAINING BOTH ASPHALTENES AND PETROLENES AND SEPARTING AND HYDROCARBON SOLVENT FROM THE RESULTING IMPROVED ASPHALT, SAID SOLUTION OF ASPHALTENES BEING BLENDED WITH SAID ASPHALT RESIDUUM IN AN AMOUNT SUCH THAT THE ASPHALTENES ADDED TO SAID ASPHALT RESIDUUM COMPRISES ABOUT 2 TO 50 WT. PERCENT OF SAID IMPROVED ASPHALT.
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) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |