US3238150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoconductive cadmium sulfide powder and method for the preparation thereof
Assignee: Xerox Corp
•
Filing: 1962-09-12
•
Granted: 1966-03-01
•
Expires: 1982-09-12
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Behringer
- 👤 Corrsin Lester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:44
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
97 words
A METHOD OF PREPARING PHOTOCONDUCTIVE CADMIUM SULFIDE POWDER IN ONLY TWO FIRING STEPS COMPRISING: (A) FIRING A MIXTURE OF CADMIUM SULFIDE POWDER WITH ACTIVATOR PROPORTIONS OF COPPER AND A HALOGEN IN ABOUT 1 PART BY WEIGHT OF ZINC CHLORIDE FLUX TO ABOUT 10 PARTS BY WEIGHT OF CADMIUM SULFIDE AT ABOUT 600* C. FOR ABOUT 20 MINUTES, (B) WASHING THE RESULTING MATERIAL WITH DEIONIZED WATER TO REMOVE WATER SOLUBLE MATERIALS, AND (C) REFIRIANG THE WASHED PRODUCT AT ABOUT 600* C. FOR ABOUT 20 MINUTES AFTER WETTING SAID PRODUCT WITH A 0.1 M AQUEOUS SOLUTION OF ZINC CHLORIDE.
Claim 2
Independent Claim
97 words
A METHOD OF PREPARING PHOTOCONDUCTIVE CADMIUM SULFIDE POWDER IN ONLY TWO FIRING STEPS COMPRISING: (A) FIRING A MIXTURE OF CADMIUM SULFIDE POWDER WITH ACTIVATOR PROPORTIONS OF COPPER AND A HALOGEN IN ABOUT 1 PART BY WEIGHT OF ZINC CHLORIDE FLUX TO ABOUT 10 PARTS BY WEIGHT OF CADMIUM SULFIDE AT ABOUT 600* C. FOR ABOUT 20 MINUTES, (B) WASHING THE RESULTING MATERIAL WITH DEIONIZED WATER TO REMOVE WATER SOLUBLE MATERIALS, AND (C) REFIRIANG THE WASHED PRODUCT AT ABOUT 600* C. FOR ABOUT 20 MINUTES AFTER WETTING SAID PRODUCT WITH A 0.1 M AQUEOUS SOLUTION OF ZINC CHLORIDE.
Claim 3
Dependent Claim
12 words
A PHOTOCONDUCTING CADMIUM SULFIDE POWDER PREPARED BY THE METHOD OF CLAIM 1.
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) | 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 |