US3321660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron multiplier having resistive secondary emissive surface which is adapted to sustain a potential gradient, whereby successive multiplication is possible
Assignee: RCA Corp
•
Filing: 1962-05-24
•
Granted: 1967-05-23
•
Expires: 1982-05-24
Abstract
No abstract record available.
Inventors
- 👤 Edward G Ramberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:25
CPC Classifications
H; H01; H01J; H01J43/00; H01J43/04; H01J43/06; H01J43/18; H01J43/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
AN ELECTRON MULTIPLIER COMPRISING; (A) A HOLLOW ELONGATED MEMBER, (B) A COATING OF SECONDARY ELECTRON EMISSIVE MATERIAL ON THE INNER SURFACE OF SAID MEMBER; AND (C) A CONDUCTIVE MEANS EXTENDING LONGITUDINALLY WITHIN SAID MEMBER AND SPACED FROM SAID INNER SURFACE;
Claim 2
Dependent Claim
40 words
AN ELECTRON MULTIPLIER COMPRISING; (A) A HOLLOW ELONGATED MEMBER, (B) A COATING OF SECONDARY ELECTRON EMISSIVE MATERIAL ON THE INNER SURFACE OF SAID MEMBER; AND (C) A CONDUCTIVE MEANS EXTENDING LONGITUDINALLY WITHIN SAID MEMBER AND SPACED FROM SAID INNER SURFACE;
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) | 1970-05-22 | 1970-11-21 | 1971-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-22 | 1974-11-21 | 1975-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-22 | 1978-11-21 | 1979-05-23 | $7700.00 | Window Closed / Lapsed |