US3549358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophotographic process using organic photoconductors having at least two chromophores
Assignee: International Business Machines Corp
•
Filing: 1968-12-23
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Granted: 1970-12-22
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Expires: 1988-12-23
Abstract
No abstract record available.
Inventors
- 👤 Nicholas J Clecak
- 👤 Robert J Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:59
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0622; G03G5/0644; G03G5/0646; G03G5/065; C; C07; C07D; C07D455/00; C07D455/03; C07D455/04; G03G5/0601; G03G5/0612; G03G5/0661; G03G5/0664; G03G5/0666; G03G5/0672; G03G5/0675; G03G5/0677; G03G5/0679
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) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |