US4031423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Channel structure for multi-channel electron multipliers and method of making same
Assignee: American Optical Corp
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Filing: 1969-04-30
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Granted: 1977-06-21
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Expires: 1989-04-30
Abstract
Abstract An electron multiplier channel structure having channel walls formed of alternate strips of different glasses. One glass has optimum electrical conductivity properties and the other glass has optimum secondary electron-emitting properties. The strips are contiguous so that electrical conducting strips can readily supply electrons to neighboring electron emitting strips when an electrical potential is applied across the multi-channel structure.
Inventors
- 👤 Walter P. Siegmund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:24
CPC Classifications
H; H01; H01J; H01J43/00; H01J43/04; H01J43/06; H01J43/18; H01J43/24; H01J9/00; H01J9/02; H01J9/12; H01J9/125; H01J2201/00; H01J2201/32
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
80 words
An electron multiplier component comprising a glass plate having a multiplicity of juxtapositioned channels extending from one face through the plate to an opposite face thereof, the inner wall of each channel being formed of a plurality of contiguous strips of glass extending along substantially the full length of the channel, said strips being alternately one of a glass having high electrical conductivity and another of a glass having high electron emissive properties and a matrix glass surrounding said strips.
Claim 2
Dependent Claim
80 words
An electron multiplier component comprising a glass plate having a multiplicity of juxtapositioned channels extending from one face through the plate to an opposite face thereof, the inner wall of each channel being formed of a plurality of contiguous strips of glass extending along substantially the full length of the channel, said strips being alternately one of a glass having high electrical conductivity and another of a glass having high electron emissive properties and a matrix glass surrounding said strips.
Claim 3
Dependent Claim
31 words
An electron multiplier component according to claim 1 further including an electrically conductive coating on each of said faces of said plate applied to ends of said strips and matrix glass.
Claim 4
Dependent Claim
28 words
An electron multiplier component according to claim 1 wherein said alternate strips of glass are one of high lead content and the other being substantially free of lead.
Claim 5
Dependent Claim
29 words
An electron multiplier component according to claim 1 wherein said alternate strips of glass are one having a reducible metallic content and the other having a non-reducible metallic content.
References Cited (Backward Citations)
US3243642A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-20 | 1980-12-20 | 1981-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-20 | 1984-12-20 | 1985-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-20 | 1988-12-20 | 1989-06-21 | $7700.00 | Window Closed / Lapsed |