US2783188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of fractionating asphalt and similar bituminous materials
Assignee: KERR MC GEE OIL IND Inc
•
Filing: 1951-03-30
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Granted: 1957-02-26
•
Expires: 1971-03-30
Abstract
No abstract record available.
Inventors
- 👤 George A Agoston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:39
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
THE PROCESS OF FRACTIONATING ASPHALT AND SIMILAR BITUMINOUS MATERIAL CONTAINING RESINS, OILS, AND A FRACTION OF HIGHER AVERAGE MOLECULAR WEIGHT AND GREATER AVERAGE MOLECULAR COMPLEXITY THAN THE CORRESPONDING AVERAGES OF THE RESINS, WHICH COMPRISES MIXING SUCH MATERIAL WITH A SOLVENT CONTAINING SUBSTANTIALLY HYDROCARBONS SELECTED FROM THE GROUP CONSISTING OF N-PENTANE, ISOPENTANE AND HEXANE, THEN SEPARATING THE UNDISSOLVED MATERIAL FROM THE RESULTING SOLUTION INCLUDING THE OILS AND RESINS, CONTACTING SAID SOLUTION WITH AN ADSORBENT MATERIAL WHICH
Claim 2
Dependent Claim
75 words
THE PROCESS OF FRACTIONATING ASPHALT AND SIMILAR BITUMINOUS MATERIAL CONTAINING RESINS, OILS, AND A FRACTION OF HIGHER AVERAGE MOLECULAR WEIGHT AND GREATER AVERAGE MOLECULAR COMPLEXITY THAN THE CORRESPONDING AVERAGES OF THE RESINS, WHICH COMPRISES MIXING SUCH MATERIAL WITH A SOLVENT CONTAINING SUBSTANTIALLY HYDROCARBONS SELECTED FROM THE GROUP CONSISTING OF N-PENTANE, ISOPENTANE AND HEXANE, THEN SEPARATING THE UNDISSOLVED MATERIAL FROM THE RESULTING SOLUTION INCLUDING THE OILS AND RESINS, CONTACTING SAID SOLUTION WITH AN ADSORBENT MATERIAL WHICH
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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) | 1960-02-26 | 1960-08-27 | 1961-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-26 | 1964-08-27 | 1965-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-26 | 1968-08-27 | 1969-02-26 | $7700.00 | Window Closed / Lapsed |