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US3195077A Expired / Lapsed US ⏱️ 0.0 years remaining

Semiconductor multisection r-c filter of tapered monolithic construction having progressively varied values of impedance per section

Assignee: Westinghouse Electric Corp
•
Filing: 1960-09-06
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Granted: 1965-07-13
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Expires: 1980-09-06
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Abstract

No abstract record available.

Inventors

  • 👤 Irving F Barditch
  • 👤 Robert P Donovan
  • 👤 Bento Robert

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 05:09
CPC Classifications
H; H03; H03H; H03H1/00; H03H1/02; H10; H10D; H10D84/00; H10D84/201; H10D84/204; H10D84/206; H10D99/00

Claims Analysis

Total Claims: 1
Claim 1
Independent Claim 99 words
A MONOLITHIC SEMICONDUCTOR MULTISECTION FILTER DEVICE COMPRISING TWO SEMICONDUCTOR REGIONS OF OPPOSITE CONDUCTIVITY TYPE FORMING A P-N JUNCTION WHICH WHEN REVERSE BIASED PROVIDES A CAPACITANCE, THE REGIONS TAPERERING IN WIDTH ALONG THE LENGTH OF THE DEVICE WHEREBY THE CAPACITANCE PER UNIT LENGTH OF THE REVERSE BIASED JUNCTION PROGRESSIVELY VARIES ALONG THE LENGTH OF THE DEVICE, AT LEAST ONE OF THE SEMCONDUCTOR REGIONS TAPERING IN DEPTH ALONG THE LENGTH OF THE DEVICE TO PROVIDE A PROGRRESSIVELY VARYING VALVE OF RESISTANCE. VARYING IN THE SENSE OPPOSITE TO THE SENSE OF THE VARIATION OF THE CAPACITANCE ALONG THE LENGTH OF SAID DEVICE.

References Cited (Backward Citations)

US2681993A Cited
US2761020A Cited
US2816228A Cited
US2913676A Cited
US3022472A Cited
US2959504A Cited
US3118114A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1968-07-12 1969-01-11 1969-07-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1972-07-12 1973-01-11 1973-07-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1976-07-12 1977-01-11 1977-07-13 $7700.00 Window Closed / Lapsed

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