US3264254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reacting vulcanizable elastomers with dinitrosoanilines
Assignee: Monsanto Co
•
Filing: 1956-06-11
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Granted: 1966-08-02
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Expires: 1976-06-11
Abstract
No abstract record available.
Inventors
- 👤 Ching C Tung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:53
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
THE PROCESS WHICH COMPRISES HEATING WITHIN THE RANGE OF 250*F.-370*F. FOR A TIME WITHIN THE RANGE OF ABOUT ONE MINUTE TO SIXTEEN HOURS BUTYL RUBBER WHICH IS A COPOLYMER OF AT LEAST 85% ISOBUTYLENE AND A SMALL AMOUNT, NOT MORE THAN 85% ISOBUTYLENE AND A SMALL HAVING INCORPORATED THEREIN CARBON BLACK WITHIN THE RANGE OF 25-60 PARTS PER 100 PARTS BY WEIGHT OF COPOLYMER AND A COMPOUND WITHIN THE RANGE OF 0.01-3.0 PARTS PER 100 PARTS BY WEIGHT OF COPOLYMER WHICH INCREASES THE RESILIENCE OF THE VULCANIZATE PREPARED FROM THE COPOLYMER TREATED AS AFORESAID, REPRESENTED BY THE GENERAL FORMULA
Claim 2
Dependent Claim
99 words
THE PROCESS WHICH COMPRISES HEATING WITHIN THE RANGE OF 250*F.-370*F. FOR A TIME WITHIN THE RANGE OF ABOUT ONE MINUTE TO SIXTEEN HOURS BUTYL RUBBER WHICH IS A COPOLYMER OF AT LEAST 85% ISOBUTYLENE AND A SMALL AMOUNT, NOT MORE THAN 85% ISOBUTYLENE AND A SMALL HAVING INCORPORATED THEREIN CARBON BLACK WITHIN THE RANGE OF 25-60 PARTS PER 100 PARTS BY WEIGHT OF COPOLYMER AND A COMPOUND WITHIN THE RANGE OF 0.01-3.0 PARTS PER 100 PARTS BY WEIGHT OF COPOLYMER WHICH INCREASES THE RESILIENCE OF THE VULCANIZATE PREPARED FROM THE COPOLYMER TREATED AS AFORESAID, REPRESENTED BY THE GENERAL FORMULA
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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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |