US3536484A
Expired / Lapsed
US
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Small molecule heterocyclic photoconductors and their use in electrophotography
Assignee: International Business Machines Corp
•
Filing: 1967-12-15
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Granted: 1970-10-27
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Expires: 1987-12-15
Abstract
No abstract record available.
Inventors
- 👤 Barry F Dowden
- 👤 Meredith David Shattuck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:42
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0664; G03G5/0666; G03G5/0668; C; C07; C07C; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/72; C07C45/74; C07C49/00; C07C49/587; C07C49/657; C07C49/683; C07D; C07D455/00; C07D455/03; C07D455/04; C09; C09B; C09B23/00; C09B23/0008; C09B23/005; C09B23/0058; C09B23/0066; G03G5/0622; G03G5/0624; G03G5/0635; G03G5/0638; G03G5/0644; G03G5/0646; G03G5/065; G03G5/0661
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3232755A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |