US3244922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron multiplier having undulated passage with semiconductive secondary emissive coating
Assignee: TDK Micronas GmbH
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Filing: 1962-11-05
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Granted: 1966-04-05
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Expires: 1982-11-05
Abstract
No abstract record available.
Inventors
- 👤 Lozure G Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:06
CPC Classifications
H; H01; H01J; H01J43/00; H01J43/04; H01J43/06; H01J43/18; H01J43/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
IN AN ELECTRON MULTIPLIED DEVICE, A DYNODE ELEMENT COMPRISING A BLOCK OF DIELECTRIC MATERIAL, AN ELONGATED TUBULAR PASSAGE THROUGH SAID BLOCK BETWEEN TWO ENDS THEREOF AND HAVING A PLURALITY OF UNDULATIONS ON THE INTERIOR WALLS, SAID PASSAGE HAVING AN ELONGATED CONTINUOUS COATING OF SEMI-CONDUCTIVE SECONDARY-EMISSIVE MATERIAL ON THE SURFACE OF SAID WALLS.
Claim 2
Dependent Claim
52 words
IN AN ELECTRON MULTIPLIED DEVICE, A DYNODE ELEMENT COMPRISING A BLOCK OF DIELECTRIC MATERIAL, AN ELONGATED TUBULAR PASSAGE THROUGH SAID BLOCK BETWEEN TWO ENDS THEREOF AND HAVING A PLURALITY OF UNDULATIONS ON THE INTERIOR WALLS, SAID PASSAGE HAVING AN ELONGATED CONTINUOUS COATING OF SEMI-CONDUCTIVE SECONDARY-EMISSIVE MATERIAL ON THE SURFACE OF SAID WALLS.
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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |