US3082342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photo-electric tube
Assignee: US Philips Corp
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Filing: 1960-02-24
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Granted: 1963-03-19
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Expires: 1980-02-24
Abstract
No abstract record available.
Inventors
- 👤 Pietri Georges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:17
CPC Classifications
H; H01; H01J; H01J43/00; H01J43/04; H01J43/06; H01J43/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
AN ELECTRON OPTICAL SYSTEM FOR A PHOTOMULTIPLIER TUBE AND THE LIKE COMPRISING A PHOTO-CATHODE, A FOCUSSING ELECTRODE, A HOLLOW ACCELERATING ELECTRODE, AN ANODE, AND A DECELERATING ELECTRODE SURROUNDING A PORTION OF THE ACCELERATING ELECTRODE, SAID DECELERATING ELECTRODE HAVING A SCREEN PORTION BETWEEN THE ACCELERATING ELECTRODE AND THE ANODE FOR DECELERATING PHOTOELECTRONS EMITTED BY THE PHOTOCATHODE, SAID SCREEN PORTION OF THE DECELERATING ELECTRODE HAVING AN APERTURE THEREIN OPPOSITE THE ANODE WHICH IS SUBSTANTIALLY SMALLER THAN THE DIAMETER OF THE PORTION OF THE ACCELERATING ELECTRODE OPPOSITE THE ANODE, SAID APERTURE BEING APPROXIMATELY ADJACENT A FOCUSSING POINT OF PHOTOELECTRONS FROM SAID PHOTOCATHODE BETWEEN
Claim 2
Dependent Claim
100 words
AN ELECTRON OPTICAL SYSTEM FOR A PHOTOMULTIPLIER TUBE AND THE LIKE COMPRISING A PHOTO-CATHODE, A FOCUSSING ELECTRODE, A HOLLOW ACCELERATING ELECTRODE, AN ANODE, AND A DECELERATING ELECTRODE SURROUNDING A PORTION OF THE ACCELERATING ELECTRODE, SAID DECELERATING ELECTRODE HAVING A SCREEN PORTION BETWEEN THE ACCELERATING ELECTRODE AND THE ANODE FOR DECELERATING PHOTOELECTRONS EMITTED BY THE PHOTOCATHODE, SAID SCREEN PORTION OF THE DECELERATING ELECTRODE HAVING AN APERTURE THEREIN OPPOSITE THE ANODE WHICH IS SUBSTANTIALLY SMALLER THAN THE DIAMETER OF THE PORTION OF THE ACCELERATING ELECTRODE OPPOSITE THE ANODE, SAID APERTURE BEING APPROXIMATELY ADJACENT A FOCUSSING POINT OF PHOTOELECTRONS FROM SAID PHOTOCATHODE BETWEEN
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) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |