US2702287A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber treatment
Assignee: Uniroyal Inc
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Filing: 1952-05-27
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Granted: 1955-02-15
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Expires: 1972-05-27
Abstract
No abstract record available.
Inventors
- 👤 Alfred N Iknayan
- 👤 Lester C Peterson
- 👤 Harvey J Batts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:16
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/18; C08L23/20; C08L23/22
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
99 words
THE METHOD WHICH COMPRISES INTIMATELY ADMIXING A RUBBERY COPOLYMER OF ISOBUTYLENE AND FROM 0.5 TO 10% OF A CONJUGATED C4 TO C6 DIOLEFIN WITH A MATERIAL SELECTED FROM THE GROUP CONSISTING OF 4-HYDROCARBON-2,6-DIMETHYLOLPHENOLS AND HEAT-REACTIVE OIL-SOLUBLE SELF-CONDENSATION PRODUCTS THEREOF IN AMOUNT EQUAL TO FROM 0.25 TO 2 PART PER 100 PARTS OF SAID COPOLYMER, PRE-SCORCHING THE MIXTURE BY HEATING IT AT AN ELEVATED TEMPERATURE UNTIL THE CURING ACTION OF SAID MATERIAL UPON SAID COPOLYMER HAS BEEN SUBSTANTIALLY COMPLETELY EXHAUSTED, ADMIXING THE THUS PRE-SCORCHED MIXTURE WITH SULFUR IN AMOUNT SUFFICIENT TO COMPLETELY CURE SAID COPOLYMER, AND VULCANIZING THE RESULTING MIXTURE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-14 | 1958-08-16 | 1959-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-14 | 1962-08-16 | 1963-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-14 | 1966-08-16 | 1967-02-15 | $7700.00 | Window Closed / Lapsed |