US3544354A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing a phosphor composition for screening a color cathode-ray tube
Assignee: Zenith Electronics LLC
•
Filing: 1966-06-01
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Granted: 1970-12-01
•
Expires: 1986-06-01
Abstract
No abstract record available.
Inventors
- 👤 Irwin Kachel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:23
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/18; H01J29/187; H01J9/00; H01J9/20; H01J9/22; H01J9/221; H01J9/223
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2817599A
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US2903377A
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US3017288A
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US2996380A
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US3397950A
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US3275466A
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US3308326A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |