US2610925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber reclaiming oil
Assignee: Individual
•
Filing: 1950-06-14
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Granted: 1952-09-16
•
Expires: 1970-06-14
Abstract
No abstract record available.
Inventors
- 👤 Fred W Staten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:02
CPC Classifications
C; C08; C08J; C08J11/00; C08J11/04; C08J11/10; C08J11/18; C08J2321/00; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/62
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
103 words
A RUBBER RECLAIMING OIL COMPRISING A MIXTURE OF DI(HYDROXYARYL)-SULFIDES IN COMBINATION WITH A MIXTURE OF CARBOXYLIC ACIDS, THESE INGREDIENTS BEING PREPARED FROM A DISTILLATION FRACTION BOILING BETWEEN 300* AND 650* F. OF A CRUDE OIL PRODUCED BY THE DESTRUCTIVE DISTILLATION OF OIL SHALE BY EXTRACTING SAID FRACTION WITH A STRONG ALKALINE SOLUTION, ACIDIFYING SAID ALKALINE EXTRACT TO RECOVER THE PHENOLIC ACIDS AND CARBOXYLIC ACIDS PRESENT THEREIN, AND CONVERTING SAID PHENOLIC ACIDS TO DI(HYDROXYARYL)-SULFIDES, SAID RECLAIMING OIL CONTAINING NO LESS THAN 20% AND NO MORE THAN 70% BY WEIGHT OF CARBOXYLIC ACIDS BASED ON THE WEIGHT OF SAID DI(HYDROXYARYL)SULFIDES AND SAID CARBOXYLIC ACIDS ALONE.
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) | 1955-09-16 | 1956-03-17 | 1956-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-16 | 1960-03-17 | 1960-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-16 | 1964-03-17 | 1964-09-16 | $7700.00 | Window Closed / Lapsed |