US3533786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoconductive elements containing ionic cycloheptenyl photoconductive compounds
Assignee: Eastman Kodak Co
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Filing: 1967-07-18
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Granted: 1970-10-13
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Expires: 1987-07-18
Abstract
No abstract record available.
Inventors
- 👤 Jerome J Looker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:00
CPC Classifications
C; C07; C07C; C07C247/00; C07D; C07D249/00; C07D249/02; C07D249/04; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0601; G03G5/0605; G03G5/0607; G03G5/0612; G03G5/0622; G03G5/0624; G03G5/0627; G03G5/0629; G03G5/0635; G03G5/0637
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3141770A
Cited
US3250615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |