US3488706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel polymers containing quaternary ammonium groups
Assignee: Eastman Kodak Co
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Filing: 1968-03-01
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Granted: 1970-01-06
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Expires: 1988-03-01
Abstract
No abstract record available.
Inventors
- 👤 Hyman L Cohen
- 👤 Louis M Minsk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:35
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/42; G03C8/52; G03C8/56; C; C08; C08F; C08F8/00; G03C1/00; G03C1/76; G03C1/825; G03C1/835; G03C5/00; G03C5/56; G03C7/00; G03C7/22; G03C7/25; Y; Y10; Y10S; Y10S430/00; Y10S430/142
Claims Analysis
Total Claims: 0
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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) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |