Patent US3201630A successfully refreshed from Google Patents.
US3201630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Charge storage sheet with tapered apertures
Assignee: TDK Micronas GmbH
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Filing: 1955-03-30
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Granted: 1965-08-17
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Expires: 1975-03-30
Abstract
No abstract record available.
Inventors
- 👤 Richard K Orthuber
- 👤 Charles V Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:44
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J29/395
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
FOR USE IN AN ELECTRON DISCHARGE IMAGE TUBE, A STORAGE SCREEN COMPRISING A SHEET-LIKE MEMBER OF INSULATING MATERIAL HAVING FLAT PARALLEL FACES, A PLURALITY OF APERTURES THROUGH SAID MEMBER, SAID APERTURES BEING TAPERED INWARDLY FROM ONE FACE OF SAID MEMBER TO THE OTHER, THE DEGREE OF APERTURE TAPER BEING SUFFICIENT TO PREVENT FLOOD ELECTRONS FROM IMPINGING UPON THE APERTURE WALLS, AND A COATING OF CONDUCTIVE MATERIAL ON SAID ONE FACE.
Claim 2
Dependent Claim
70 words
FOR USE IN AN ELECTRON DISCHARGE IMAGE TUBE, A STORAGE SCREEN COMPRISING A SHEET-LIKE MEMBER OF INSULATING MATERIAL HAVING FLAT PARALLEL FACES, A PLURALITY OF APERTURES THROUGH SAID MEMBER, SAID APERTURES BEING TAPERED INWARDLY FROM ONE FACE OF SAID MEMBER TO THE OTHER, THE DEGREE OF APERTURE TAPER BEING SUFFICIENT TO PREVENT FLOOD ELECTRONS FROM IMPINGING UPON THE APERTURE WALLS, AND A COATING OF CONDUCTIVE MATERIAL ON SAID ONE FACE.
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) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |