Patent US2619481A successfully refreshed from Google Patents.
US2619481A
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US
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Curing rubbery olefinic copolymers
Assignee: Standard Oil Development Co
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Filing: 1949-04-28
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Granted: 1952-11-25
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Expires: 1969-04-28
Abstract
No abstract record available.
Inventors
- 👤 Francis P Baldwin
- 👤 Winthrope C Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:30
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/32; C08K5/33; C08K5/36; C08K5/45; C08K5/46; C08K5/47
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A COMPOSITION OF MATTER COMPRISING IN COMBINATION AN ELASTOMER CONTAINING A MAJOR PROPORTION OF ISOBUTYLENE COPOLYMERIZED WITH A MINOR PROPORTION OF A MULTIOLEFIN HAVING FROM 4 TO 14, INCLUSIVE, CARBON ATOMS PER MOLECULE, CHARACTERIZED BY A STAUDINGER MOLECULAR WEIGHT NUMBER WITHIN THE RANGE BETWEEN 30,000 AND 60,000, AN IODINE NUMBER WITHN THE RANGE BETWEEN 0.5 AND 175, AND REACTIVITY WITH SULFUR IN A CURING REACTION, TOGETHER WITH AMOUNTS OF A SUBSTANCE CONTAINING A QUINONOID NUCLEUS WITHIN THE RANGE BETWEEN 0.5 PARTS AND 5 PARTS PER HUNDRED OF ELASTOMER AND FROM 0.5 PARTS TO 5 PARTS OF A THIAZYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF 2,2''-BENZOTHIAZYL DISULFIDE AND BENZOTHIAZYL-2MONOCYCLOHEXYL SULFENAMIDE.
Claim 2
Dependent Claim
110 words
A COMPOSITION OF MATTER COMPRISING IN COMBINATION AN ELASTOMER CONTAINING A MAJOR PROPORTION OF ISOBUTYLENE COPOLYMERIZED WITH A MINOR PROPORTION OF A MULTIOLEFIN HAVING FROM 4 TO 14, INCLUSIVE, CARBON ATOMS PER MOLECULE, CHARACTERIZED BY A STAUDINGER MOLECULAR WEIGHT NUMBER WITHIN THE RANGE BETWEEN 30,000 AND 60,000, AN IODINE NUMBER WITHN THE RANGE BETWEEN 0.5 AND 175, AND REACTIVITY WITH SULFUR IN A CURING REACTION, TOGETHER WITH AMOUNTS OF A SUBSTANCE CONTAINING A QUINONOID NUCLEUS WITHIN THE RANGE BETWEEN 0.5 PARTS AND 5 PARTS PER HUNDRED OF ELASTOMER AND FROM 0.5 PARTS TO 5 PARTS OF A THIAZYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF 2,2''-BENZOTHIAZYL DISULFIDE AND BENZOTHIAZYL-2MONOCYCLOHEXYL SULFENAMIDE.
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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) | 1955-11-25 | 1956-05-26 | 1956-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-25 | 1960-05-26 | 1960-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-25 | 1964-05-26 | 1964-11-25 | $7700.00 | Window Closed / Lapsed |