US2615849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infrared quenchable zinc sulfide phosphors
Assignee: RCA Corp
•
Filing: 1948-12-31
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Granted: 1952-10-28
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Expires: 1968-12-31
Abstract
No abstract record available.
Inventors
- 👤 John A Markoski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:21
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/60; C09K11/602; C09K11/605
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A PHOSPHOR MATERIAL CONSISTING ESSENTIALLY OF A SUBSTANCE FROM THE CLASS CONSISTING OF ZINC SULPHIDE AND ZINC CADMIUM SULPHIDE AND BETWEEN 0.0018% AND 0.0036% IRON, SAID PHOSPHOR MATERIAL BEING ACTIVATED WITH A SMALL PERCENTAGE OF A MATERIAL FROM THE CLASS CONSISTING OF COPPER, AND COPPER AND SILVER.
Claim 2
Dependent Claim
47 words
A PHOSPHOR MATERIAL CONSISTING ESSENTIALLY OF A SUBSTANCE FROM THE CLASS CONSISTING OF ZINC SULPHIDE AND ZINC CADMIUM SULPHIDE AND BETWEEN 0.0018% AND 0.0036% IRON, SAID PHOSPHOR MATERIAL BEING ACTIVATED WITH A SMALL PERCENTAGE OF A MATERIAL FROM THE CLASS CONSISTING OF COPPER, AND COPPER AND SILVER.
References Cited (Backward Citations)
US2075399A
Cited
US2447322A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-28 | 1956-04-28 | 1956-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-28 | 1960-04-28 | 1960-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-28 | 1964-04-28 | 1964-10-28 | $7700.00 | Window Closed / Lapsed |