Patent JPS63254728A successfully refreshed from Google Patents.
Patent US3669550A successfully refreshed from Google Patents.
US3669550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coordinate detector
Assignee: TDK Micronas GmbH
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Filing: 1970-03-23
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Granted: 1972-06-13
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Expires: 1990-03-23
Abstract
Abstract APPARATUS TO DETECT THE CARTESIAN OR ANGULAR COORDINATES OF AN OBJECT HAVING A DIFFERENT CHROMATICITY OR LIGHT INTENSITY THAN ITS BACKGROUND SO AS TO MAKE ITS DISCERNMENT POSSIBLE. AN ELECTRON MULTIPLIER IS EMPLOYED WHICH HAS COLUMNS AND ROWS OF HOLES IN A DIELECTROC. THE HOLES HAVE SURFACES WHICH SUPPORT SECONDLARY EMISSION. THE COORDINATES OF THE OBJECT ARE THUS DETERMINED BY DETECTING WHICH HOLE IS FLOODED OR DENIED ELECTRONS FROM A PHOTOCATHODE DUE TO THE EXISTENCE OF THE OBJECT.
Inventors
- 👤 John M Grant
- 👤 Albert D Stolzy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:32
CPC Classifications
G; G01; G01D; G01D5/00; G01D5/26; G01S; G01S3/00; G01S3/78; G01S3/782; G01S3/783; G01S3/784; H; H01; H01J; H01J43/00; H01J43/04; H01J43/06; H01J43/18; H01J43/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |