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:
Sep. 23, 2008
Filed:
Aug. 16, 2007
Applicants:
Wen-kuang Hou, Miaoli County, TW;
Chih-chieh Cheng, Taoyuan County, TW;
Inventors:
Wen-Kuang Hou, Miaoli County, TW;
Chih-Chieh Cheng, Taoyuan County, TW;
Assignee:
Darfon Electronics Corp., Taoyuan, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H 13/70 (2006.01);
U.S. Cl.
CPC ...
Abstract
A keyboard. A membrane circuit board includes a plurality of switches. At least one keycap is disposed on the membrane circuit board and includes a plurality of activating pillars respectively corresponding to and separated from the switches. When the keycap is moved toward the membrane circuit board, one of the activating pillars compresses one of the switches, outputting a signal corresponding to the keycap.
Hou, Wen-Kuang. (2008). Keyboards (U.S. Patent No. 7427725). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7427725
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile