US3403019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoconductive electrostatic elements containing polyurethanes in the photoconductive layer
Assignee: Eastman Kodak Co
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Filing: 1965-02-15
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Granted: 1968-09-24
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Expires: 1985-02-15
Abstract
No abstract record available.
Inventors
- 👤 Frederick A Stahly
- 👤 Richard A Weitzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:15
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/05; G03G5/0528; G03G5/0592; G03G5/0557; G03G5/0575; G03G5/10; G03G5/104; G03G5/14; G03G5/142
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) | 1971-09-24 | 1972-03-25 | 1972-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-24 | 1976-03-25 | 1976-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-24 | 1980-03-25 | 1980-09-24 | $7700.00 | Window Closed / Lapsed |