Patent US3592522A successfully refreshed from Google Patents.
US3592522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing tubes for tubular electron-multipliers
Assignee: Thales SA
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Filing: 1969-06-12
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Granted: 1971-07-13
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Expires: 1989-06-12
Abstract
Abstract The tube is cut along two of its generatrices 14 and 24, over the whole of its length, and the two halves 12 and 22 thus obtained receive a secondary electron emissive coating on their inner walls. The two halves are then replaced in their initial position relatively to one another.
Inventors
- 👤 Henri Rougeot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:12
CPC Classifications
H; H01; H01J; H01J43/00; H01J43/04; H01J43/06; H01J43/18; H01J43/24
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
68 words
A method of manufacturing tubes for tubular electronmultipliers comprising the following steps: cutting the tube over the whole of its length along two of its generatrices, depositing on the inner wall of the two tube halves thus obtained a resistive layer having secondary electron emission properties, replacing, after processing, the two tube halves in their initial position in relation to one another and maintaining them in this position.
Claim 2
Independent Claim
68 words
A method of manufacturing tubes for tubular electronmultipliers comprising the following steps: cutting the tube over the whole of its length along two of its generatrices, depositing on the inner wall of the two tube halves thus obtained a resistive layer having secondary electron emission properties, replacing, after processing, the two tube halves in their initial position in relation to one another and maintaining them in this position.
Claim 3
Dependent Claim
20 words
A method of manufacturing the tubes of tubular eleCtron-multipliers as claimed in claim 1, in which said tubes are rectilinear.
Claim 4
Dependent Claim
20 words
A method of manufacturing the tubes of tubular electron-multipliers as claimed in claim 1, in which said tubes are curved.
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) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |