Patent US2994357A successfully refreshed from Google Patents.
US2994357A
Expired / Lapsed
US
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Modification of rubbery copolmers
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1956-07-06
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Granted: 1961-08-01
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Expires: 1976-07-06
Abstract
No abstract record available.
Inventors
- 👤 George E Serniuk
- 👤 Francis P Baldwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:46
CPC Classifications
B; B60; B60C; B60C1/00; C; C08; C08F; C08F8/00; C08F8/30; Y; Y10; Y10S; Y10S152/00; Y10S152/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
IN A TIRE ADAPTED FOR USE WITHOUT AN INNER TUBE, THE COMBINATION WHICH COMPRISES AN OPEN BELLIED BODY TERMINATING IN SPACED BEAD PORTIONS, AN INNER LINING, AIR SEALING MEANS AT SAID BEAD PORTIONS, AND A TREAD AREA INTERMEDIATE OF SAID BEAD PORTIONS, THE COMPOSITION OF AT LEAST SAID TREAD AREA COMPRISING A MAJOR PROPORTION OF AN OIL EXTENDED BUTYL RUBBER CONSISTING OF AN ISOOLEFIN WITH A MULTIOLEFIN REACTED WITH UP TO ONE MOLECULE OF A COMBINED MONO-AZOCARBOXYLATE COMPOUND PER DOUBLE BOND IN THE BUTYL RUBBER POLYMER CONSISTING OF AN ISOOLEFIN WITH A MULTIOLEFIN, SAID COMPOSITION HAVING BEEN CURED IN THE PRESENCE OF ADDED CURATIVES AT A TEMPERATURE LEVEL BETWEEN ABOUT 250* AND 400*F. SAID COMPOSITION BEING UNVULCANIZABLE IN THE ABSENCE OF ADDED CURATIVES.
Claim 2
Dependent Claim
123 words
IN A TIRE ADAPTED FOR USE WITHOUT AN INNER TUBE, THE COMBINATION WHICH COMPRISES AN OPEN BELLIED BODY TERMINATING IN SPACED BEAD PORTIONS, AN INNER LINING, AIR SEALING MEANS AT SAID BEAD PORTIONS, AND A TREAD AREA INTERMEDIATE OF SAID BEAD PORTIONS, THE COMPOSITION OF AT LEAST SAID TREAD AREA COMPRISING A MAJOR PROPORTION OF AN OIL EXTENDED BUTYL RUBBER CONSISTING OF AN ISOOLEFIN WITH A MULTIOLEFIN REACTED WITH UP TO ONE MOLECULE OF A COMBINED MONO-AZOCARBOXYLATE COMPOUND PER DOUBLE BOND IN THE BUTYL RUBBER POLYMER CONSISTING OF AN ISOOLEFIN WITH A MULTIOLEFIN, SAID COMPOSITION HAVING BEEN CURED IN THE PRESENCE OF ADDED CURATIVES AT A TEMPERATURE LEVEL BETWEEN ABOUT 250* AND 400*F. SAID COMPOSITION BEING UNVULCANIZABLE IN THE ABSENCE OF ADDED CURATIVES.
References Cited (Backward Citations)
US2393321A
Cited
US2469819A
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US2566384A
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US2575249A
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US2839117A
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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) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |