US2740769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparing interpolymers of vinylidene cyanide with aliphatic conjugated diolefins
Assignee: Goodrich Corp
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Filing: 1953-03-31
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Granted: 1956-04-03
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Expires: 1973-03-31
Abstract
No abstract record available.
Inventors
- 👤 Gilbert Harry
- 👤 Floyd F Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:52
CPC Classifications
C; C08; C08F; C08F236/00; C08F236/02; C08F236/04; C08F22/00; C08F22/30; C08F22/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
THE METHOD WHICH COMPRISES POLYMERIZING IN THE ABSENCE OF WATER A MIXTURE OF MONOMERIC MATERIALS, AT LEAST TWO OF WHICH ARE VINYLIDENE CYANIDE AND AN ALIPHATIC CONJUGATED DIENE, WITH A CATALYST COMBINATION OF FROM 0.002 TO 5.0% EACH OF AN ORGANIC THIOL AND SULFUR DIOXIDE.
Claim 2
Independent Claim
45 words
THE METHOD WHICH COMPRISES POLYMERIZING IN THE ABSENCE OF WATER A MIXTURE OF MONOMERIC MATERIALS, AT LEAST TWO OF WHICH ARE VINYLIDENE CYANIDE AND AN ALIPHATIC CONJUGATED DIENE, WITH A CATALYST COMBINATION OF FROM 0.002 TO 5.0% EACH OF AN ORGANIC THIOL AND SULFUR DIOXIDE.
References Cited (Backward Citations)
US2281613A
Cited
US2383055A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-03 | 1959-10-03 | 1960-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-03 | 1963-10-03 | 1964-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-03 | 1967-10-03 | 1968-04-03 | $7700.00 | Window Closed / Lapsed |