Patent US3299000A successfully refreshed from Google Patents.
US3299000A
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Polycarbonates from substituted 4, 4'-(cyclohexylmethylene) bis
Assignee: Eastman Kodak Co
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Filing: 1964-01-07
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Granted: 1967-01-17
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Expires: 1984-01-07
Abstract
No abstract record available.
Inventors
- 👤 Jr Winston J Jackson
- 👤 John R Caldwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:16
CPC Classifications
C; C07; C07C; C07C39/00; C07C39/24; C07C39/42; C08; C08G; C08G64/00; C08G64/04; C08G64/06; C08G64/08; C08G64/10; C08G64/18; C08G64/183; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
THE POLYMER CONSISTING ESSENTIALLY OF THE RECURRING STRUCTURAL UNIT
Claim 2
Dependent Claim
9 words
THE POLYMER CONSISTING ESSENTIALLY OF THE RECURRING STRUCTURAL UNIT
References Cited (Backward Citations)
US3153008A
Cited
US3161615A
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US3062781A
Cited
US3220975A
Cited
US3146273A
Cited
US3182088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |