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:
Jan. 05, 1993
Filed:
Jul. 16, 1991
Hisamitsu Takahashi, Mobara, JP;
Tatsuo Yamaura, Mobara, JP;
Masao Miyagishima, Mobara, JP;
Takao Kishino, Mobara, JP;
Futaba Denshi Kogyo K.K., Mobara, JP;
Abstract
A key board switch capable of permitting all key switches to exhibit an N-key rollover function at a low cost while preventing an increase in thickness of the key board switch. For this purpose, a thin film diode is used for a contact of the key switch. The thin film diode may form at least one of the contacts of each of the key switches. Alternatively, the thin film diode may be connected in series to at least one of the contacts of each of the key switches. Alternatively, the thin film diode may be connected in series to at least one of the contacts of each of the key switches.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile