Patent US2775537A successfully refreshed from Google Patents.
US2775537A
Expired / Lapsed
US
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Double cements for bonding dissimilar rubbery materials
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1952-04-29
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Granted: 1956-12-25
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Expires: 1972-04-29
Abstract
No abstract record available.
Inventors
- 👤 Howard L Wilson
- 👤 Samuel B Robison
- 👤 Winthrope C Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:04
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/12; C08J5/124; C08J2309/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31826; Y10T428/31833; Y10T428/31837; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
AN ARTICLE OF MANUFACTURE COMPRISING A FIRST BODY OF A LOW TEMPERATURE INTERPOLYMER OF A MAJOR AMOUNT OF ISOBUTYLENE WITH A MINOR PROPORTION OF A CONJUGATED DIOLEFIN, THE INTERPOLYMER BEING CHARACTERIZED BY A LOW UNSATURATION WITHIN THE RANGE OF A WIJS IODINE NUMBER BETWEEN ABOUT 0.5 AND 50, A MOLECULAR WEIGHT ABOVE ABOUT 20,000 AND REACTIVITY WITH A CURING AGENT TO YIELD AN ELASTRIC PRODUCT, A LAYER OF INTERPOLYMER ADHERENT THERETO AS A CEMENT, SAID CEMENT INTERPOLYMER HAVING A WIJS IODINE NUMBER ABOVE ABOUT 50 AND HAVING BEEN PREPARED FROM AN OLEFINIC FEED MIXTURE HAVING ABOUT 20 TO 100 PARTS OF DIOLEFIN HAVING FROM ABOUT 4 TO 6 CARBON ATOMS
Claim 2
Dependent Claim
110 words
AN ARTICLE OF MANUFACTURE COMPRISING A FIRST BODY OF A LOW TEMPERATURE INTERPOLYMER OF A MAJOR AMOUNT OF ISOBUTYLENE WITH A MINOR PROPORTION OF A CONJUGATED DIOLEFIN, THE INTERPOLYMER BEING CHARACTERIZED BY A LOW UNSATURATION WITHIN THE RANGE OF A WIJS IODINE NUMBER BETWEEN ABOUT 0.5 AND 50, A MOLECULAR WEIGHT ABOVE ABOUT 20,000 AND REACTIVITY WITH A CURING AGENT TO YIELD AN ELASTRIC PRODUCT, A LAYER OF INTERPOLYMER ADHERENT THERETO AS A CEMENT, SAID CEMENT INTERPOLYMER HAVING A WIJS IODINE NUMBER ABOVE ABOUT 50 AND HAVING BEEN PREPARED FROM AN OLEFINIC FEED MIXTURE HAVING ABOUT 20 TO 100 PARTS OF DIOLEFIN HAVING FROM ABOUT 4 TO 6 CARBON ATOMS
References Cited (Backward Citations)
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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) | 1959-12-25 | 1960-06-25 | 1960-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-25 | 1964-06-25 | 1964-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-25 | 1968-06-25 | 1968-12-25 | $7700.00 | Window Closed / Lapsed |