US3238062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoconductor preparation
Assignee: International Business Machines Corp
•
Filing: 1962-04-20
•
Granted: 1966-03-01
•
Expires: 1982-04-20
Abstract
No abstract record available.
Inventors
- 👤 Sunners Brian
- 👤 Arthur H Mones
- 👤 Galli Guido
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:13
CPC Classifications
H; H10; H10P; H10P95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A METHOD OF FORMING A PHOTOCONDUCTIVE LAYER HAVING SUPERIOR TEMPERATURE AND LIGHT STABILITY CHARACTERISTICS COMPRISING: COATING A SUBSTRATE WITH A MATERIAL CONSISTING ESSENTIALLY OF AT LEAST ONE COMPOUND FROM THE GROUP CONSISTING OF CADMIUM SULFIDE AND CADMIUM SELENIDE, AND INCLUDING MINOR PORTIONS OF A DONOR ELEMENT SELECTED FROM THE GROUP CONSISTING OF ELEMENTS FROM THE THIRD AND SEVENTH COLUMNS OF THE PERIODIC TABLE AND AN ACCEPTOR ELEMENT SELECTED FROM THE GROUP CONSISTING OF SILVER AND COPPER, SAID DONOR ELEMENT BEING IN SUFFICIENT QUANTITY TO ACT AS A CHEMICAL FLUX; SINTERING THE SUPPORTED COATING IN AN INERT ATMOSPHERE TO THEREBY FORM A SUBSTANTIALLY CONTINUOUS POLYCRYSTALLINE PHOTOCONDUCTOR LAYER; AND HEATING THE COATING IN AN INERT FLUID CONTAINING AN ELEMENT FROM THE GROUP CONSISTING OF SULFUR AND SELENIUM AT A TEMPERATURE OF APPROXIMATELY 180*220*C. FOR A PREDETERMINED TIME TO INCREASE THE STABILITY OF SAID COATING.
Claim 2
Independent Claim
142 words
A METHOD OF FORMING A PHOTOCONDUCTIVE LAYER HAVING SUPERIOR TEMPERATURE AND LIGHT STABILITY CHARACTERISTICS COMPRISING: COATING A SUBSTRATE WITH A MATERIAL CONSISTING ESSENTIALLY OF AT LEAST ONE COMPOUND FROM THE GROUP CONSISTING OF CADMIUM SULFIDE AND CADMIUM SELENIDE, AND INCLUDING MINOR PORTIONS OF A DONOR ELEMENT SELECTED FROM THE GROUP CONSISTING OF ELEMENTS FROM THE THIRD AND SEVENTH COLUMNS OF THE PERIODIC TABLE AND AN ACCEPTOR ELEMENT SELECTED FROM THE GROUP CONSISTING OF SILVER AND COPPER, SAID DONOR ELEMENT BEING IN SUFFICIENT QUANTITY TO ACT AS A CHEMICAL FLUX; SINTERING THE SUPPORTED COATING IN AN INERT ATMOSPHERE TO THEREBY FORM A SUBSTANTIALLY CONTINUOUS POLYCRYSTALLINE PHOTOCONDUCTOR LAYER; AND HEATING THE COATING IN AN INERT FLUID CONTAINING AN ELEMENT FROM THE GROUP CONSISTING OF SULFUR AND SELENIUM AT A TEMPERATURE OF APPROXIMATELY 180*220*C. FOR A PREDETERMINED TIME TO INCREASE THE STABILITY OF SAID COATING.
References Cited (Backward Citations)
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US2833675A
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US2765385A
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US2879182A
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US3142586A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |