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:
Jul. 20, 2010
Filed:
Aug. 10, 2006
Hisashi Ishii, Niigata, JP;
Minoru Yoshida, Niigata, JP;
Hisashi Ishii, Niigata, JP;
Minoru Yoshida, Niigata, JP;
Sunarrow Limited, Tokyo, JP;
Abstract
Preparing a resin film having a transparency and a thickness of 0.2 mm or less such as PC, PET, PU or the like; drawing the resin film in such a manner to form concave portions at positions corresponding to a plurality of the key tops of the resin film by pinching the resin film between heating drawing dies; forming a pressing element on the undersurface of the film by filling a filler (resin) into the concave portion formed by means of the drawing; and disposing the key tops by means of adhesion, the key tops formed on the top surface of the resin film by means of the resin formation, the mold printing or the like after the formation of the pressing elements, which achieves further thinner configuration of the key sheet with the configuration that the key tops and the pressing elements are disposed, respectively on the top surface and the undersurface of the resin film.