Patent US2690780A successfully refreshed from Google Patents.
US2690780A
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US
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Compounding of butyl rubber
Assignee: Goodyear Tire and Rubber Co
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Filing: 1951-06-16
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Granted: 1954-10-05
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Expires: 1971-06-16
Abstract
No abstract record available.
Inventors
- 👤 Cousins Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:56
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/29; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/69; C08K5/32; Y; Y10; Y10S; Y10S156/00; Y10S156/91
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
78 words
AN INNER TUBE COMPRISING A SYNTHETIC RUBBER FORMED BY POLYMERIZING A MAJOR PROPORTION OF AN ISO-OLEFIN AND A MINOR PROPORTION OF A MULTI-OLEFIN, SAID RUBBER BEING COMPOUNDED WITH FROM 0.01 TO 1.00 PART BY WEIGHT OF (A) AN ORGANIC NITROGEN-BEARING COMPOUND SELECTED FROM THE GROUP CONSISTING OF ARYL DINITROSO COMPOUNDS AND ARYL DIOXIMES, AND FROM 0.10 TO 20.00 PARTS BY WEIGHT OF (B) AT LEAST ONE ORGANIC ISOCYANATE COMPOUND CONTAINING AT LEAST ONE ISOCYANATE GROUP AND THEREAFTER CURED.
References Cited (Backward Citations)
US2526504A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-04 | 1958-04-05 | 1958-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-04 | 1962-04-05 | 1962-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-04 | 1966-04-05 | 1966-10-05 | $7700.00 | Window Closed / Lapsed |