US3238406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ruggedized photodiode tube with semicylindrical cathode and anode of elongated cross-section
Assignee: Individual
•
Filing: 1962-11-14
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Granted: 1966-03-01
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Expires: 1982-11-14
Abstract
No abstract record available.
Inventors
- 👤 Alfred L Greilich
- 👤 Marcus R Mccraven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:26
CPC Classifications
H; H01; H01J; H01J40/00; H01J40/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A PHOTODIODE TUBE COMPRISING A HERMETICALLY SEALED ENVELOPE, A SEMICYLINDRICAL CATHODE DISPOSED WITHIN SAID ENVELOPE, SAID CATHODE HAVING A SURFACE RESPONSIVE TO ELECTROMAGNETIC RADIATION BY THE EMISSION OF ELECTRONS, AN ANODE OF ELONGATED CORSS SECTION DISPOSED WITHIN SAID ENVELOPE, THE NARROW EDGE OF SAID ELONGATED CROSS SECTION BEING CONVEXLY CURVED, SAID CURVED EDGE OF SAID ANODE BEING COAXIAL WITH THE FACING SURFACE OF SAID SEMICYLINDRICAL CATHODE, AND AN ELECTRICAL CONNECTOR MEANS CONNECTED TO SAID ANODE AND CATHODE HERMETICALLY PENETRATING SAID ENVELOPE TO THE EXTERIOR THEREOF.
Claim 2
Dependent Claim
85 words
A PHOTODIODE TUBE COMPRISING A HERMETICALLY SEALED ENVELOPE, A SEMICYLINDRICAL CATHODE DISPOSED WITHIN SAID ENVELOPE, SAID CATHODE HAVING A SURFACE RESPONSIVE TO ELECTROMAGNETIC RADIATION BY THE EMISSION OF ELECTRONS, AN ANODE OF ELONGATED CORSS SECTION DISPOSED WITHIN SAID ENVELOPE, THE NARROW EDGE OF SAID ELONGATED CROSS SECTION BEING CONVEXLY CURVED, SAID CURVED EDGE OF SAID ANODE BEING COAXIAL WITH THE FACING SURFACE OF SAID SEMICYLINDRICAL CATHODE, AND AN ELECTRICAL CONNECTOR MEANS CONNECTED TO SAID ANODE AND CATHODE HERMETICALLY PENETRATING SAID ENVELOPE TO THE EXTERIOR THEREOF.
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |