US3317447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphaltene treating process
Assignee: Sunoco Inc
•
Filing: 1965-08-25
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Granted: 1967-05-02
•
Expires: 1985-08-25
Abstract
No abstract record available.
Inventors
- 👤 Ernest P Black
- 👤 James B Clelland
- 👤 Lucretia G Ferris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:29
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A PROCESS FOR THE PREPARATION OF MODIFIED ASPHALTENES WHICH COMPRISES HEATING AT A TEMPERATURE IN THE RANGE OF 300-1000*F. A MIXTURE CNSISTING ESSENTIALLY OF ASPHALTENES AND POLYPROPYLENE IN THE RANGE OF 1-20 TO 20-1 PARTS BY WEIGHT OF JPOLYPROPYLENE TO ASPHALTENES IN THE MIXTURE AND 1-30 WEIGHT PERCENT ELEMENTAL SULFUR BASED ON THE WEIGHT OF THE TOTAL LMIXTURE AND RECOVERING A REACTIN PRODUCT HAVING A MELTING POINT IN THE RANGE OF 275-600*F. AND A MAXIMUM SOLUBILITY IN CARBON DISULFIDE OF 70 WEIGHT PERCENT.
Claim 2
Dependent Claim
83 words
A PROCESS FOR THE PREPARATION OF MODIFIED ASPHALTENES WHICH COMPRISES HEATING AT A TEMPERATURE IN THE RANGE OF 300-1000*F. A MIXTURE CNSISTING ESSENTIALLY OF ASPHALTENES AND POLYPROPYLENE IN THE RANGE OF 1-20 TO 20-1 PARTS BY WEIGHT OF JPOLYPROPYLENE TO ASPHALTENES IN THE MIXTURE AND 1-30 WEIGHT PERCENT ELEMENTAL SULFUR BASED ON THE WEIGHT OF THE TOTAL LMIXTURE AND RECOVERING A REACTIN PRODUCT HAVING A MELTING POINT IN THE RANGE OF 275-600*F. AND A MAXIMUM SOLUBILITY IN CARBON DISULFIDE OF 70 WEIGHT PERCENT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-01 | 1970-10-31 | 1971-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-01 | 1974-10-31 | 1975-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-01 | 1978-10-31 | 1979-05-02 | $7700.00 | Window Closed / Lapsed |