US3484237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organic photoconductive compositions and their use in electrophotographic processes
Assignee: International Business Machines Corp
•
Filing: 1966-06-13
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Granted: 1969-12-16
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Expires: 1986-06-13
Abstract
No abstract record available.
Inventors
- 👤 Meredith D Shattuck
- 👤 Ulo Vahtra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:24
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/07; G03G5/071; G03G5/072; G03G5/073
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB990368A
Cited
US3287120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-15 | 1973-06-16 | 1973-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-15 | 1977-06-16 | 1977-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-15 | 1981-06-16 | 1981-12-16 | $7700.00 | Window Closed / Lapsed |