US3265532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preparing gallium sulfide flakes and photoconductive device using same
Assignee: Wyeth Holdings LLC
•
Filing: 1962-06-06
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Granted: 1966-08-09
•
Expires: 1982-06-06
Abstract
No abstract record available.
Inventors
- 👤 Mooser Emanuel
- 👤 Boelsterli Hans Ulrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:57
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
96 words
A PROCESS FOR PREPARING GALLIUM SULFIDE IN FLAKE FORM, SUITABLE FOR USE IN PHOTOCONDUCTIVE DEVICES, WHICH COMPRISES HEATING IN AN AREA OF A TRANSPORT REACTION VESSEL GALLIUM SULFIDE IN THE PRESENCE OF A HALOGEN TRANSPORT REAGENT AND AT A TEMPERATURE BELOW THE MELTING POINT OF GALLIUM SULFIDE AND COLLECTING SAID GALLIUM SULFIDE IN A SECOND AREA OF SAID VESSEL SAID SECOND AREA BEING INITIALLY FREE FROM GALLIUM SULFIDE AT A TEMPERATURE BELOW THE MELTING POINT OF GALLIUM SULFIDE AND BELOW THAT AT WHICH THE GALLIUM SULFIDE IS HEATED IN SAID FIRST AREA OF SAID REACTION VESSEL.
Claim 2
Dependent Claim
96 words
A PROCESS FOR PREPARING GALLIUM SULFIDE IN FLAKE FORM, SUITABLE FOR USE IN PHOTOCONDUCTIVE DEVICES, WHICH COMPRISES HEATING IN AN AREA OF A TRANSPORT REACTION VESSEL GALLIUM SULFIDE IN THE PRESENCE OF A HALOGEN TRANSPORT REAGENT AND AT A TEMPERATURE BELOW THE MELTING POINT OF GALLIUM SULFIDE AND COLLECTING SAID GALLIUM SULFIDE IN A SECOND AREA OF SAID VESSEL SAID SECOND AREA BEING INITIALLY FREE FROM GALLIUM SULFIDE AT A TEMPERATURE BELOW THE MELTING POINT OF GALLIUM SULFIDE AND BELOW THAT AT WHICH THE GALLIUM SULFIDE IS HEATED IN SAID FIRST AREA OF SAID REACTION VESSEL.
Claim 3
Dependent Claim
37 words
A PHOTOCONDUCTIVE DEVICE COMPRISING A PAIR OF CONDUCTIVE ELEMENTS, AT LEAST ONE OF WHICH IS LIGHT TRANSMITTING, HAVING POSITIONED THEREBETWEEN AS A PHOTOCONDUCTIVE MATERIAL FLAKES OF GALLIUM SULFIDE, GROWN BY THE TRANSPORT REACTION PROCESS OF CLAIM 1.
References Cited (Backward Citations)
US3117297A
Cited
US1219432A
Cited
US2843914A
Cited
US2868736A
Cited
US2994621A
Cited
US3001078A
Cited
US3033989A
Cited
US3092725A
Cited
US3110685A
Cited
US3145125A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |