Patent US6259309B1 successfully refreshed from Google Patents.
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Method of reclaiming fiber-reinforced rubber
Assignee: Goodrich Corp
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Filing: 1949-01-21
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Granted: 1951-09-11
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Expires: 1969-01-21
Abstract
No abstract record available.
Inventors
- 👤 Richard K Carr
- 👤 Earl B Busenburg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:19
CPC Classifications
C; C08; C08J; C08J11/00; C08J11/04; C08J11/10; C08J11/16; C08J2301/00; C08J2301/02; C08J2321/00; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/62
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
85 words
THE METHOD OF RECLAIMING A FIBER-CONTAINTING SULFUR-VULCANIZED RUBBER COMPOSITION WHICH METHOD COMPRISES SUBJECTING SAID COMPOSITION IN FINELY-DIVIDED FORM TO MINERAL ACID VAPORS AT A TEMPERATURE OF 70* TO 250* C. FOR A PERIOD OF TIME NOT OVER 5 MINUTES WHILE MAINTAINING SAID COMPOSITION IN AN ESSENTIALLY DRY CONDITION, REMOVING THE COMPOSITION FROM SAID VAPORS, AND HEATING IT FOR TWO TO FIVE HOURS IN A LIQUID AQUEOUS MEDIUM AT A TEMPERATURE OF 330* TO 400* F. TO RENDER THE RUBBER PLASTIC AND REMOVE THE FIBER THEREFROM.
References Cited (Backward Citations)
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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) | 1954-09-10 | 1955-03-12 | 1955-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-10 | 1959-03-12 | 1959-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-10 | 1963-03-12 | 1963-09-11 | $7700.00 | Window Closed / Lapsed |