US2649431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vulcanization of synthetic rubber with alkyl dimethylol phenol and formaldehyde
Assignee: Uniroyal Inc
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Filing: 1951-03-05
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Granted: 1953-08-18
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Expires: 1971-03-05
Abstract
No abstract record available.
Inventors
- 👤 Julian R Little
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:48
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
THE METHOD OF VULCANIZING SYNTHETIC RUBBER SELECTED FROM THE GROUP CONSISTING OF POLYMERS OF ALIPHATIC CONJUGATED DIOLEFINS AND COPOLYMERS OF AN ALIPHATIC CONJUGATED DIOLEFIN AND ANOTHER MONOMER, WHICH COPOLYMERS CONTAIN COPOLYMERIZED THEREIN AT LEAST 25% OF AN ALIPHATIC CONJUGATED DIOLEFIN, WHICH COMPRISES HEATING A MIXTURE OF SAID RUBBER, CARBON BLACK IN AN AMOUNT EQUAL TO AT LEAST 15 PARTS PER 100 PARTS OF SAID RUBBER, A VULCANIZING AGENT COMPOSED OF A COMPOUND HAVING THE FORMULA
Claim 2
Independent Claim
75 words
THE METHOD OF VULCANIZING SYNTHETIC RUBBER SELECTED FROM THE GROUP CONSISTING OF POLYMERS OF ALIPHATIC CONJUGATED DIOLEFINS AND COPOLYMERS OF AN ALIPHATIC CONJUGATED DIOLEFIN AND ANOTHER MONOMER, WHICH COPOLYMERS CONTAIN COPOLYMERIZED THEREIN AT LEAST 25% OF AN ALIPHATIC CONJUGATED DIOLEFIN, WHICH COMPRISES HEATING A MIXTURE OF SAID RUBBER, CARBON BLACK IN AN AMOUNT EQUAL TO AT LEAST 15 PARTS PER 100 PARTS OF SAID RUBBER, A VULCANIZING AGENT COMPOSED OF A COMPOUND HAVING THE FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |