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:
Jun. 30, 2015
Filed:
May. 04, 2012
Applicant:
Yong Yan, Sunnyvale, CA (US);
Inventor:
Yong Yan, Sunnyvale, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08B 21/00 (2006.01); G02B 26/08 (2006.01); H01H 13/84 (2006.01);
U.S. Cl.
CPC ...
G02B 26/08 (2013.01); H01H 13/84 (2013.01); H01H 2217/018 (2013.01); H01H 2219/054 (2013.01); H01H 2219/064 (2013.01); H01H 2223/034 (2013.01); H01H 2223/046 (2013.01);
Abstract
A method of utilizing raised parts on a keypad surface, called separation walls, is disclosed. Separation walls can help prevent unintended key hits so that keys can be smaller and be placed with higher densities on small devices. Separation walls with slits can also make light beam keypads operable with multiple fingers at a higher input speed.