US3213316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube with highly porous target
Assignee: Westinghouse Electric Corp
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Filing: 1962-12-03
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Granted: 1965-10-19
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Expires: 1982-12-03
Abstract
No abstract record available.
Inventors
- 👤 Gerhard W Goetze
- 👤 Alvin H Boerio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:40
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J29/44; H01J31/00; H01J31/08; H01J31/26; H01J31/28; H01J31/34; H01J31/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
AN ELECTRON DISCHARGE DEVICE COMPRISING A STORAGE ELECTRODE INCLUDING AN ELECTRICALLY CONDUCTIVE MEANS, A POROUS FILM DEPOSIT OF FROM ONE TO FIVE PERCENT OF ITS NORMAL BULK DENSITY OF HIGH RESISTIVE MATERIAL DEPOSITED ON ONE SURFACE OF SAID CONDUCTIVE MEANS AND HAVING THE PROPERTY OF GENERATING ELECTRONS IN RESPONSE TO ELECTRON BOMBARDMENT, MEANS FOR DIRECTING A WRITING ELECTRON BEAM MODULATED WITH A SIGNAL AT SAID TARGET OF A PREDETERMINED ENERGY TO PENETRATE SAID POROUS FILM TO GENERATE SECONDARY ELECTRONS WITHIN SAID POROUS FILM, MEANS FOR ESTABLISHING A FIELD ACROSS SAID POROUS FILM TO COLLECT SAID SECONDARY ELECTRONS EMITTED INTO THE VACUUM SPACES BETWEEN PARTICLES BUT INADEQUATE TO COLLECT CHARGE CARRIERS WITHIN THE SOLID MATERIAL, AND MEANS FOR DIRECTING ELECTRONS BELOW SAID PREDERMINED ENERGY AT SAID EXPOSED SURFACE OF SAID POROUS FILM TO RESTORE SAID EXPOSED SURFACE TO AN EQUILIBRIUM POTENTIAL WHILE DERIVING A SIGNAL CORRESPONDING TO THE SIGNAL ON SAID WRITING BEAM.
Claim 2
Dependent Claim
152 words
AN ELECTRON DISCHARGE DEVICE COMPRISING A STORAGE ELECTRODE INCLUDING AN ELECTRICALLY CONDUCTIVE MEANS, A POROUS FILM DEPOSIT OF FROM ONE TO FIVE PERCENT OF ITS NORMAL BULK DENSITY OF HIGH RESISTIVE MATERIAL DEPOSITED ON ONE SURFACE OF SAID CONDUCTIVE MEANS AND HAVING THE PROPERTY OF GENERATING ELECTRONS IN RESPONSE TO ELECTRON BOMBARDMENT, MEANS FOR DIRECTING A WRITING ELECTRON BEAM MODULATED WITH A SIGNAL AT SAID TARGET OF A PREDETERMINED ENERGY TO PENETRATE SAID POROUS FILM TO GENERATE SECONDARY ELECTRONS WITHIN SAID POROUS FILM, MEANS FOR ESTABLISHING A FIELD ACROSS SAID POROUS FILM TO COLLECT SAID SECONDARY ELECTRONS EMITTED INTO THE VACUUM SPACES BETWEEN PARTICLES BUT INADEQUATE TO COLLECT CHARGE CARRIERS WITHIN THE SOLID MATERIAL, AND MEANS FOR DIRECTING ELECTRONS BELOW SAID PREDERMINED ENERGY AT SAID EXPOSED SURFACE OF SAID POROUS FILM TO RESTORE SAID EXPOSED SURFACE TO AN EQUILIBRIUM POTENTIAL WHILE DERIVING A SIGNAL CORRESPONDING TO THE SIGNAL ON SAID WRITING BEAM.
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) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |