The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 09, 1976
Filed:
Jan. 31, 1975
Applicant:
Inventors:
Hitoo Iwasa, Takatsuki, JA;
Gota Kano, Nagaoka-kyo, JA;
Assignee:
Matsushita Electric Industrial Co., Ltd., Kadoma, JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01H / ; G01D / ; G08B / ; H03K / ;
U.S. Cl.
CPC ...
307308 ; 307116 ; 307304 ; 317D / ; 3402 / ;
Abstract
A touch-operation semiconductor switch is constituted by employing a switching device and a semiconductor negative resistance device comprising a complemetary connection of a depletion mode n-channel junction type field-effect transistor (hereinafter: FET) and a depletion mode p-channel junction type FET, both FETs being connected by source to source to each other, and by each gate to each drain of the other FET, and a touching terminal is connected to said common connected sources, so that the on-off state of the negative resistance device is inversed when the touching terminal is touched by human body.