Patent US2558764A successfully refreshed from Google Patents.
US2558764A
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Process for the reclamation of rubber in the presence of alpha, alpha-dialkylarylmethyl hydroperoxide
Assignee: Hercules Powder Co
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Filing: 1948-06-30
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Granted: 1951-07-03
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Expires: 1968-06-30
Abstract
No abstract record available.
Inventors
- 👤 John R Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:55
CPC Classifications
C; C08; C08J; C08J11/00; C08J11/04; C08J11/10; C08J11/18; C08J11/22; C08J2321/00; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/62
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
52 words
THE PROCESS OF RECLAIMING A VULCANIZED RUBBER MATERIAL WHICH COMPRISES HEATING THE RUBBER MATERIAL IN THE PRESENCE OF FROM ABOUT 0.1% TO ABOUT 50% OT ITS WEIGHT OF A HYDROPEROXIDE WHICH STRUCTURALLY IS AN AROMATIC HYDROCARBON HAVING ATTACHED TO THE RING THEREOF AT LEAST ONE BUT NOT MORE THAN TWO A,A-DIALKYL-A-HYDROPEROXYMETHYL GROUPS.
References Cited (Backward Citations)
US922339A
Cited
US2261166A
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US2069151A
Cited
US2324980A
Cited
US2395523A
Cited
US2403772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-02 | 1955-01-01 | 1955-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-02 | 1959-01-01 | 1959-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-02 | 1963-01-01 | 1963-07-03 | $7700.00 | Window Closed / Lapsed |