Patent US3336261A successfully refreshed from Google Patents.
US3336261A
Expired / Lapsed
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Polycyanoterephthalylidene polymers and method of preparation
Assignee: Dow Chemical Co
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Filing: 1963-12-02
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Granted: 1967-08-15
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Expires: 1983-12-02
Abstract
No abstract record available.
Inventors
- 👤 Harry A Smith
- 👤 William K Carriugton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:03
CPC Classifications
C; C08; C08G; C08G16/00; C08G16/02; C08G16/0212; C08G16/0218
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A THERMOPLASTIC RESINOUS RESINOUS POLYMER CONSISTING ESSENTIALLY OF THE FOLLOWING UNITED IN POLYMERIC FORM:
Claim 2
Dependent Claim
14 words
A THERMOPLASTIC RESINOUS RESINOUS POLYMER CONSISTING ESSENTIALLY OF THE FOLLOWING UNITED IN POLYMERIC FORM:
References Cited (Backward Citations)
FR985765A
Cited
DE1088637B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |