Patent US3355414A successfully refreshed from Google Patents.
US3355414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermosetting polyesters
Assignee: Eastman Kodak Co
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Filing: 1961-09-14
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Granted: 1967-11-28
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Expires: 1981-09-14
Abstract
No abstract record available.
Inventors
- 👤 John R Caldwell
- 👤 Jr Winston J Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:28
CPC Classifications
C; C09; C09D; C09D169/00; C07; C07C; C07C39/00; C07C39/12; C07C39/17; C07C39/23; C08; C08G; C08G63/00; C08G63/64; C08G64/00; C08G64/04; C08G64/045; C08G64/16; C08G64/1691; C07C2601/00; C07C2601/12; C07C2601/16; C07C2602/00; C07C2602/36; C07C2602/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
AN OLEFINICALLY UNSATURATED, LINEAR THERMOSETTING POLYCARBONATE OR COPOLY(ESTER-CARBONATE) OF CONSTITUENTS CONSISTING ESSENTIALLY OF (A) A MEMBER SELECTED FROM THE GROUP CONSISTING OF BISPHENOLS FREE OF OLEFINIC UNSATURATION AND OLEFINICALLY UNSATURATED BISPHENOLS, SAID OLEFINICALLY UNSATURATED BISPHENOLS BEING SELECTED FRM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
42 words
AN OLEFINICALLY UNSATURATED, LINEAR THERMOSETTING POLYCARBONATE OR COPOLY(ESTER-CARBONATE) OF CONSTITUENTS CONSISTING ESSENTIALLY OF (A) A MEMBER SELECTED FROM THE GROUP CONSISTING OF BISPHENOLS FREE OF OLEFINIC UNSATURATION AND OLEFINICALLY UNSATURATED BISPHENOLS, SAID OLEFINICALLY UNSATURATED BISPHENOLS BEING SELECTED FRM THE GROUP CONSISTING OF
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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) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |