US2674586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidized isoolefin-cyclodiolefin copolymers
Assignee: Standard Oil Development Co
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Filing: 1950-04-26
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Granted: 1954-04-06
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Expires: 1970-04-26
Abstract
No abstract record available.
Inventors
- 👤 Welch Lester Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:59
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/06; C08F2810/00; C08F2810/10; C08F2810/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A PROCESS WHICH CONSISTS IN CONTACTING A VULCANIZABLE, RUBBER-LIKE COPOLYMER OF AN ISOOLEFIN HAVING 3 TO 5 CARBON ATOMS AND A CYCLIC CONJUGATED DIOLEFIN CONTAINING BOTH DOUBLE BONDS IN THE RING HAVING 5 TO 8 CARBON ATOMS WITH AN OXIDIZING AGENT SELECTED FROM THE GROUP CONSISTING OF AIR, OXYGEN, BENZOYL PEROXIDE, POTASSIUM PERSULFATE, AND CALCIUM PEROXIDE AT A TEMPERATURE BETWEEN 90 AND 200* C. UNTIL 0.1 AND 5 WEIGHT PERCENT OF OXYGEN IS COMBINED WITH THE COPOLYMER.
Claim 2
Dependent Claim
77 words
A PROCESS WHICH CONSISTS IN CONTACTING A VULCANIZABLE, RUBBER-LIKE COPOLYMER OF AN ISOOLEFIN HAVING 3 TO 5 CARBON ATOMS AND A CYCLIC CONJUGATED DIOLEFIN CONTAINING BOTH DOUBLE BONDS IN THE RING HAVING 5 TO 8 CARBON ATOMS WITH AN OXIDIZING AGENT SELECTED FROM THE GROUP CONSISTING OF AIR, OXYGEN, BENZOYL PEROXIDE, POTASSIUM PERSULFATE, AND CALCIUM PEROXIDE AT A TEMPERATURE BETWEEN 90 AND 200* C. UNTIL 0.1 AND 5 WEIGHT PERCENT OF OXYGEN IS COMBINED WITH THE COPOLYMER.
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) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |