US2985608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of improving processing of low unsaturation rubbery compositions
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1958-09-23
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Granted: 1961-05-23
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Expires: 1978-09-23
Abstract
No abstract record available.
Inventors
- 👤 John J Higgins
- 👤 Winthrope C Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:40
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/45; C08K5/46; C08K5/47; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K5/04; C08K5/09; C08K5/098; C08K5/39; C08L; C08L23/00; C08L23/02; C08L23/18; C08L23/20; C08L23/22; C08L23/26; C08L23/28; C08L23/283
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A METHOD FOR IMPROVING THE PROCESSING OF BUTYL RUBBER WHICH IS A COPOLYMER OF A MAJOR PROPORTION OF AN ISOOLEFIN HAVING 4 TO 14 CARBON ATOMS AND WHICH BUTLY RUBBER HAS BEEN COMPOUNDED WITH 2 TO 12 PARTS BY WEIGHT BASED ON RUBBER OF POLYMETHYLOL META-SUBSTITUTED PHENOLIC SUBSTANCES HAVING THE FORMULA
Claim 2
Independent Claim
51 words
A METHOD FOR IMPROVING THE PROCESSING OF BUTYL RUBBER WHICH IS A COPOLYMER OF A MAJOR PROPORTION OF AN ISOOLEFIN HAVING 4 TO 14 CARBON ATOMS AND WHICH BUTLY RUBBER HAS BEEN COMPOUNDED WITH 2 TO 12 PARTS BY WEIGHT BASED ON RUBBER OF POLYMETHYLOL META-SUBSTITUTED PHENOLIC SUBSTANCES HAVING THE FORMULA
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) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |