US3347693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High brightness luminescent evaporated film
Assignee: Raytheon Co
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Filing: 1964-07-07
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Granted: 1967-10-17
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Expires: 1984-07-07
Abstract
No abstract record available.
Inventors
- 👤 Paul H Wendland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:49
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/61; C09K11/615; C09K11/58; C09K11/582; C09K11/584; G; G21; G21K; G21K4/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A METHOD FOR PREPARING A LUMINESCENT FILM WHICH COMPRISES THE STEPS OF EVAPORATING A LAYER OF CADMIUM CHLORIDE ONTO A SUBSTRATE, EVAPORATING A LAYER OF CADMIUM SULFIDE OVER THE CADMIUM CHLORIDE LAYER, EVAPORATING SILVER ACTIVATOR ONTO THE RESULTING LAYER, HEATING THE RESULTING LAYER IN AN INERT ATMOSPHERE, EVAPORATING A LAYER OF ZINC SULFIDE OVER THE RESULTING LAYER, AND HEATING THE RESULTING LAYER IN AN INERT ATMOSPHERE.
Claim 2
Independent Claim
66 words
A METHOD FOR PREPARING A LUMINESCENT FILM WHICH COMPRISES THE STEPS OF EVAPORATING A LAYER OF CADMIUM CHLORIDE ONTO A SUBSTRATE, EVAPORATING A LAYER OF CADMIUM SULFIDE OVER THE CADMIUM CHLORIDE LAYER, EVAPORATING SILVER ACTIVATOR ONTO THE RESULTING LAYER, HEATING THE RESULTING LAYER IN AN INERT ATMOSPHERE, EVAPORATING A LAYER OF ZINC SULFIDE OVER THE RESULTING LAYER, AND HEATING THE RESULTING LAYER IN AN INERT ATMOSPHERE.
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) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |