US2867587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-stabilized zinc phosphate phosphors
Assignee: RCA Corp
•
Filing: 1954-11-01
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Granted: 1959-01-06
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Expires: 1974-11-01
Abstract
No abstract record available.
Inventors
- 👤 Daniel J Donahue
- 👤 Stanley A Hoshowsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:08
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A METHOD OF WATER-STABILIZING FINELY-DIVIDED ZINC PHOSPHATE PHOSPHOR PARTICLES PRIOR TO DEPOSITION ON A SUPPORT INCLUDING MIXING INTO AN AQUEOUS MEDIUM (1) THE ZINC PHOSPHATE PHOSPHOR PARTICLES AND (2) SUFFICIENT FREE ZINC OXIDE TO MAINTAIN SAID MIXTURE IN THE RANGE OF PH BETWEEN 6.5 AND 10.
Claim 2
Independent Claim
46 words
A METHOD OF WATER-STABILIZING FINELY-DIVIDED ZINC PHOSPHATE PHOSPHOR PARTICLES PRIOR TO DEPOSITION ON A SUPPORT INCLUDING MIXING INTO AN AQUEOUS MEDIUM (1) THE ZINC PHOSPHATE PHOSPHOR PARTICLES AND (2) SUFFICIENT FREE ZINC OXIDE TO MAINTAIN SAID MIXTURE IN THE RANGE OF PH BETWEEN 6.5 AND 10.
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) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |