US3761308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of photoconductive films
Assignee: International Business Machines Corp
•
Filing: 1971-11-22
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Granted: 1973-09-25
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Expires: 1991-11-22
Abstract
Abstract ADHERENT STRESS-FREE FILMS OF PHOTOCONDUCTORS ARE PREPARED ON A SUBSTRATE AT TEMPERATURES BELWO 150*C. BY A GAS PHASE REACTION BETWEEN A LOWER DIALKYL ZINC, CADMIUM OR MERCURY GAS AND A CHALCOGEN HYDRIDE IN THE PRESENCE OF AN INERT GAS DILUENT.
Inventors
- 👤 G Galli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:56
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/22; C23C16/30; C23C16/305; C23C16/306
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |