Patent US3036040A successfully refreshed from Google Patents.
Patent US3248261A successfully refreshed from Google Patents.
US3248261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoconducting layers
Assignee: International Business Machines Corp
•
Filing: 1962-08-16
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Granted: 1966-04-26
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Expires: 1982-08-16
Abstract
No abstract record available.
Inventors
- 👤 Narken Bernt
- 👤 Sunners Brian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:33
CPC Classifications
C; C03; C03C; C03C8/00; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/085; Y; Y10; Y10S; Y10S430/00; Y10S430/136
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
THE METHOD FOR PRODUCING A PHOTOCONDUCING LAYER COMPRISING: COATING A SUBSTRATE WITH A MATERIAL INCLUDING PRIMARILY AN INTIMATE MIXTURE OF GASS FRIT AND AN UNACTIVATED SUBSTANCE IN A NONPHOTOCONDUCTING STATE SELECTED FROM THE GROUP CONSISTING OF SULFIDES, SELENIDES, TELLURIDES AND SULFOSELENIDES OF CADMIUM; SAID SUBSTANCE PRESENT IN SAID MATERIAL IN AN AMOUNT IN THE RANGE OF 10 TO 50 PERCENT;
Claim 2
Independent Claim
60 words
THE METHOD FOR PRODUCING A PHOTOCONDUCING LAYER COMPRISING: COATING A SUBSTRATE WITH A MATERIAL INCLUDING PRIMARILY AN INTIMATE MIXTURE OF GASS FRIT AND AN UNACTIVATED SUBSTANCE IN A NONPHOTOCONDUCTING STATE SELECTED FROM THE GROUP CONSISTING OF SULFIDES, SELENIDES, TELLURIDES AND SULFOSELENIDES OF CADMIUM; SAID SUBSTANCE PRESENT IN SAID MATERIAL IN AN AMOUNT IN THE RANGE OF 10 TO 50 PERCENT;
References Cited (Backward Citations)
US2698915A
Cited
US2857541A
Cited
US2765385A
Cited
US2824992A
Cited
US2866117A
Cited
US3017296A
Cited
US2997677A
Cited
US2955269A
Cited
US2997408A
Cited
US2937353A
Cited
US3010044A
Cited
US3129108A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |