Patent US2715618A successfully refreshed from Google Patents.
US2715618A
Expired / Lapsed
US
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Rubber treatment
Assignee: Uniroyal Inc
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Filing: 1953-12-16
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Granted: 1955-08-16
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Expires: 1973-12-16
Abstract
No abstract record available.
Inventors
- 👤 Kenneth W Doak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:25
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/28; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A PROCESS WHICH COMPRISES MIXING RUBBER WITH A RELATIVELY LARGE AMOUNT OF RUBBER-REINFORCING CARBON BLACK AND FROM 0.75 TO 3 PARTS OF LITHIUM NITRATE, CALCULATED AS ANHYDROUS SALT, PER 100 PARTS OF SAID RUBBER HEATING THE MIXTURE AT A TEMPERATURE OF AT LEAST 275* F. BUT BELOW THAT AT WHICH THE RUBBER WOULD BE HARMED, THEREAFTER INCORPORATING VULCANIZING AND OTHER DESIRED INGREDIENTS, SHAPING THE MASS, AND VULCANIZING THE RESULTING SHAPED MASS.
Claim 2
Dependent Claim
71 words
A PROCESS WHICH COMPRISES MIXING RUBBER WITH A RELATIVELY LARGE AMOUNT OF RUBBER-REINFORCING CARBON BLACK AND FROM 0.75 TO 3 PARTS OF LITHIUM NITRATE, CALCULATED AS ANHYDROUS SALT, PER 100 PARTS OF SAID RUBBER HEATING THE MIXTURE AT A TEMPERATURE OF AT LEAST 275* F. BUT BELOW THAT AT WHICH THE RUBBER WOULD BE HARMED, THEREAFTER INCORPORATING VULCANIZING AND OTHER DESIRED INGREDIENTS, SHAPING THE MASS, AND VULCANIZING THE RESULTING SHAPED MASS.
References Cited (Backward Citations)
US2118601A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-15 | 1959-02-14 | 1959-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-15 | 1963-02-14 | 1963-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-15 | 1967-02-14 | 1967-08-16 | $7700.00 | Window Closed / Lapsed |