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US3450677A
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Polymers derived from diamines and phosphites or phosphonites
Assignee: Eastman Kodak Co
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Filing: 1966-12-01
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Granted: 1969-06-17
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Expires: 1986-12-01
Abstract
No abstract record available.
Inventors
- 👤 Richard L Mcconnell
- 👤 Harry W Coover Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:30
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2284896A
Cited
US2292443A
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US3116268A
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FR1167050A
Cited
US3044984A
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US3030340A
Cited
US3290258A
Cited
US3284497A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |