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US3474417A Expired / Lapsed US ⏱️ 0.0 years remaining

Field effect solid state image pickup and storage device

Assignee: Xerox Corp
•
Filing: 1966-09-29
•
Granted: 1969-10-21
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Expires: 1986-09-29
📄 Original PDF 🌐 Google Patents

Abstract

No abstract record available.

Inventors

  • 👤 Benjamin Kazan

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 05:54
CPC Classifications
H; H10; H10F; H10F39/00; H10F39/10; H10F39/107; G; G11; G11C; G11C17/00; G11C17/08; G11C17/10; G11C17/12; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J29/45; H04; H04N; H04N25/00; H04N25/70; H04N25/76

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 181 words
AN INFORMATION STORAGE DEVICE COMPRISING; (A) AN ARRAY OF ELECTRICAL CONDUCTORS COMPRISING A PLURALITY OF INDIVIDUAL CONDUCTORS HAVING A GAP IN ELECTRICAL CONTINUITY BETWEEN EACH CONDUCTOR AND EVERY OTHER CONDUCTOR OF THE ARRAY, (B) A PHOTOCONDUCTIVE FIELD-EFFECT SEMICONDUCTOR ELEMENT IN INTIMATE CONTACT WITH EACH OF SAID INDIVIDUAL CONDUCTORS IN SAID ARRAY AT THE GAP IN CONTINUITY BETWEEN SAID CONDUCTOR AND ANOTHER OF SAID CONDUCTORS, WITH EACH OF SAID CONDUCTORS BEING SEPARATED FROM ANOTHER CONDUCTOR BY AT LEAST A PORTION OF SAID SEMICONDUCTOR, SAID ELEMENT HAVING AN EXPOSED SURFACE SUITABLE FOR THE DEPOSITION AND RETENTION OF ELECTROSTATIC CHARGE THEREON, (C) MEANS TO FORM A CHARGE PATTERN ON SAID EXPOSED SURFACE OF SAID FIELD-EFFECT SEMICONDUCTOR ELEMENT CORRESPONDING TO AN ELECTROMAGNETIC RADIATION INPUT PATTERN, WHEREBY THE ELECTRICAL CONDUCTIVITY OF SAID SEMICONDUCTOR ELEMENT IS ALTERED IN CORRESPONDANCE TO SAID CHARGE PATTERN, (D) MEANS TO SEQUENTIALY APPLY A VOLTAGE AT EACH OF SAID CONTINUITY GAPS IN SAID ARRAY WHICH IS FILLED BY SAID FIELD-EFFECT SEMICONDUCTOR ELEMENT, AND (E) MEANS TO DETECT CHANGES IN THE INSTANTANEOUS CONDUCTIVITY OF SAID FIELD-EFFECT SEMICONDUCTOR ELEMENT AT EACH OF SAID GAPS.
Claim 2
Dependent Claim 181 words
AN INFORMATION STORAGE DEVICE COMPRISING; (A) AN ARRAY OF ELECTRICAL CONDUCTORS COMPRISING A PLURALITY OF INDIVIDUAL CONDUCTORS HAVING A GAP IN ELECTRICAL CONTINUITY BETWEEN EACH CONDUCTOR AND EVERY OTHER CONDUCTOR OF THE ARRAY, (B) A PHOTOCONDUCTIVE FIELD-EFFECT SEMICONDUCTOR ELEMENT IN INTIMATE CONTACT WITH EACH OF SAID INDIVIDUAL CONDUCTORS IN SAID ARRAY AT THE GAP IN CONTINUITY BETWEEN SAID CONDUCTOR AND ANOTHER OF SAID CONDUCTORS, WITH EACH OF SAID CONDUCTORS BEING SEPARATED FROM ANOTHER CONDUCTOR BY AT LEAST A PORTION OF SAID SEMICONDUCTOR, SAID ELEMENT HAVING AN EXPOSED SURFACE SUITABLE FOR THE DEPOSITION AND RETENTION OF ELECTROSTATIC CHARGE THEREON, (C) MEANS TO FORM A CHARGE PATTERN ON SAID EXPOSED SURFACE OF SAID FIELD-EFFECT SEMICONDUCTOR ELEMENT CORRESPONDING TO AN ELECTROMAGNETIC RADIATION INPUT PATTERN, WHEREBY THE ELECTRICAL CONDUCTIVITY OF SAID SEMICONDUCTOR ELEMENT IS ALTERED IN CORRESPONDANCE TO SAID CHARGE PATTERN, (D) MEANS TO SEQUENTIALY APPLY A VOLTAGE AT EACH OF SAID CONTINUITY GAPS IN SAID ARRAY WHICH IS FILLED BY SAID FIELD-EFFECT SEMICONDUCTOR ELEMENT, AND (E) MEANS TO DETECT CHANGES IN THE INSTANTANEOUS CONDUCTIVITY OF SAID FIELD-EFFECT SEMICONDUCTOR ELEMENT AT EACH OF SAID GAPS.

References Cited (Backward Citations)

US2887632A Cited
US2940941A Cited
US3165634A Cited
US3010025A Cited
US3191040A Cited
US3317712A Cited
US3372317A Cited
US3348074A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1972-10-20 1973-04-21 1973-10-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1976-10-20 1977-04-21 1977-10-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1980-10-20 1981-04-21 1981-10-21 $7700.00 Window Closed / Lapsed

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