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:
Apr. 20, 1976
Filed:
Feb. 20, 1974
Takehide Takemura, Hirakata, JA;
Shunji Minami, Moriguchi, JA;
Matsushita Electric Industrial Co., Ltd., Osaka, JA;
Abstract
An electronic power varying controller device adapted for a dimmer, etc. and having substantially no mechanically sliding portions, comprising a thyristor connected with a load such as a lamp, a firing phase controller circuit for the thyristor, a field effect transistor for controlling the firing phase controller circuit, a capacitor connected in parallel with the gate circuit of the field effect transistor, a highly insulating switch connected in series to the gate of the field effect transistor, and a switch to be connected with the highly insulating switch for selecting a positive or negative potential.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile