US3546178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of linear poly(ester-amides)
Assignee: Eastman Kodak Co
•
Filing: 1968-12-23
•
Granted: 1970-12-08
•
Expires: 1988-12-23
Abstract
No abstract record available.
Inventors
- 👤 John R Caldwell
- 👤 Russell Gilkey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:52
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2899408A
Cited
US2547113A
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US2740764A
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US2891929A
Cited
US2831831A
Cited
US2848439A
Cited
US2901466A
Cited
FR1278284A
Cited
US3313777A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |