US3287442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polycarbonate elastomers
Assignee: Eastman Kodak Co
•
Filing: 1962-10-18
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Granted: 1966-11-22
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Expires: 1982-10-18
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
2026-10-23 18:29
CPC Classifications
C; C08; C08L; C08L75/00; C08G; C08G18/00; C08G18/06; C08G18/83; C08G18/831; C08G4/00; C08G63/00; C08G63/64; C08G64/00; C08G64/18; C08L69/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
A HIGHLY ELEATIC POLYCARBONATE COMPRISING THE REACTION PRODUCT DERIVED FROM (A) AT LEAST ONE COMPOUND SELECTED FROM THE CLASS CONSISTING OF BISPHENOLS HAVING THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
27 words
A HIGHLY ELEATIC POLYCARBONATE COMPRISING THE REACTION PRODUCT DERIVED FROM (A) AT LEAST ONE COMPOUND SELECTED FROM THE CLASS CONSISTING OF BISPHENOLS HAVING THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |