US2736662A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid for reclaiming rubber
Assignee: Individual
•
Filing: 1951-08-14
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Granted: 1956-02-28
•
Expires: 1971-08-14
Abstract
No abstract record available.
Inventors
- 👤 Edward A Van Valkenburgh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:07
CPC Classifications
C; C08; C08J; C08J11/00; C08J11/04; C08J11/10; C08J11/18; A; A01; A01G; A01G31/00; C08J2321/00; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/62
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
82 words
A HOMOGENEOUS LIQUID FOR USE IN RECLAIMING RUBBER BY THE ACID PROCESS, SAID COMPOSITION CONSISTING ESSENTIALLY OF HEAT TREATED CRUDE TALL OIL PREHEATED TO A TEMPERATURE IN EXCESS OF ABOUT 260* F. AND BLENDED WITH A MUCH LARGER PROPORTION OF PETROLEUM HYDROCARBON OIL, LARGELY NON-VOLATILE AT THE TEMPERATURE OF VULCANIZATION THE PROPORTIONS OF HEAT TREATED CRUDE TALL OIL AND HYDROCARBON OIL BEING FROM ABOUT 5% TO 40% OF THE HEAT TREATED CRUDE TALL OIL AND 60% TO 95% OF LIQUID HYDROCARBON OIL.
References Cited (Backward Citations)
US649080A
Cited
US1897686A
Cited
US2275186A
Cited
US2316499A
Cited
US2387827A
Cited
US2555257A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-27 | 1959-08-29 | 1960-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-27 | 1963-08-29 | 1964-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-27 | 1967-08-29 | 1968-02-28 | $7700.00 | Window Closed / Lapsed |