Patent JPS5123369A successfully refreshed from Google Patents.
US3264206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cross-linked asphaltenes
Assignee: Sunoco Inc
•
Filing: 1961-12-22
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Granted: 1966-08-02
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Expires: 1981-12-22
Abstract
No abstract record available.
Inventors
- 👤 Seymour W Ferris
- 👤 Ernest P Black
- 👤 James B Clelland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:49
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/005
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
30 words
A COMPOSITION CONSISTING ESSENTIALLY OF CROSS-LINKED ASPHALTENE MOLECULES CHARACTERIZED BY A MELTING POINT OF AT LEAST 600*F., AND A SOLUBILITY IN CARBON DISULFIDE OF NOT MORE THAN 50 WT. PERCENT.
Claim 2
Dependent Claim
30 words
A COMPOSITION CONSISTING ESSENTIALLY OF CROSS-LINKED ASPHALTENE MOLECULES CHARACTERIZED BY A MELTING POINT OF AT LEAST 600*F., AND A SOLUBILITY IN CARBON DISULFIDE OF NOT MORE THAN 50 WT. PERCENT.
Claim 3
Dependent Claim
61 words
A PROCESS FOR THE PREPARATION OF CROSS-LINKED ASPHALTENES WHICH COMPRISES CHLORINATING A BITUMINOUS FEED MATERIAL CONTAINING 50-100 PERCENT ASPHALTENES AT A TEMPERATURE IN THE RANGE OF 50-100*F. UNTIL THE ASPHALTENES CONTAIN 5-30 WT. PERCENT CHLORINE AND DECHLORINATING THE INTERMEDIATE PRODUCT IN AN INERT ATMOSPHERE AT A TEMPERATURE IN THE RANGE OF 200-700*F. UNTIL THE PRODUCT CONTAINS FROM 1-10 WT. PERCENT CHLORINE.
Claim 4
Dependent Claim
61 words
A PROCESS FOR THE PREPARATION OF CROSS-LINKED ASPHALTENES WHICH COMPRISES CHLORINATING A BITUMINOUS FEED MATERIAL CONTAINING 50-100 PERCENT ASPHALTENES AT A TEMPERATURE IN THE RANGE OF 50-100*F. UNTIL THE ASPHALTENES CONTAIN 5-30 WT. PERCENT CHLORINE AND DECHLORINATING THE INTERMEDIATE PRODUCT IN AN INERT ATMOSPHERE AT A TEMPERATURE IN THE RANGE OF 200-700*F. UNTIL THE PRODUCT CONTAINS FROM 1-10 WT. PERCENT CHLORINE.
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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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |