Patent US3828169A successfully refreshed from Google Patents.
Patent US3010945A successfully refreshed from Google Patents.
US3010945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerizing vinyl cyclic acetals with cobaltous salts of dicarboxylic acid half-esters
Assignee: EIDP Inc
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Filing: 1958-05-26
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Granted: 1961-11-28
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Expires: 1978-05-26
Abstract
No abstract record available.
Inventors
- 👤 Carol K Ikeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:46
CPC Classifications
C; C08; C08F; C08F24/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A COMPOSITION COMPRISING A VINYL CYCLIC ACETAL COMPOUND AND A CATALYTIC AMOUNT OF A COBALT (OUS) SALT OF A HALF ESTER OF A DICARBOXYLIC ACID, SAID COMPOUND CONTAINING A PLURALITY OF CYCLIC RADICALS HAVING THE FOLLOWING STRUCTURAL FORMULA:
Claim 2
Dependent Claim
38 words
A COMPOSITION COMPRISING A VINYL CYCLIC ACETAL COMPOUND AND A CATALYTIC AMOUNT OF A COBALT (OUS) SALT OF A HALF ESTER OF A DICARBOXYLIC ACID, SAID COMPOUND CONTAINING A PLURALITY OF CYCLIC RADICALS HAVING THE FOLLOWING STRUCTURAL FORMULA:
References Cited (Backward Citations)
US2401776A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-27 | 1965-05-29 | 1965-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-27 | 1969-05-29 | 1969-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-27 | 1973-05-29 | 1973-11-28 | $7700.00 | Window Closed / Lapsed |