Patent US3387975A successfully refreshed from Google Patents.
US3387975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making color screen of a cathode ray tube
Assignee: Sony Corp
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Filing: 1965-03-10
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Granted: 1968-06-11
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Expires: 1985-03-10
Abstract
No abstract record available.
Inventors
- 👤 Tamura Michio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:42
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/04; H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/227; H01J9/2271; Y; Y10; Y10S; Y10S430/00; Y10S430/143
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1983005A
Cited
US2618555A
Cited
US3046118A
Cited
US2893866A
Cited
US2848328A
Cited
US3114065A
Cited
US3067349A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-11 | 1971-12-11 | 1972-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-11 | 1975-12-11 | 1976-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-11 | 1979-12-11 | 1980-06-11 | $7700.00 | Window Closed / Lapsed |