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:
Oct. 12, 2021
Filed:
Feb. 13, 2019
Applicant:
Roland Corporation, Shizuoka, JP;
Inventors:
Yukihide Takata, Shizuoka, JP;
Yoshiyasu Kitagawa, Shizuoka, JP;
Assignee:
Roland Corporation, Shizuoka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10C 3/12 (2006.01); B44F 9/00 (2006.01); G10H 1/34 (2006.01);
U.S. Cl.
CPC ...
G10C 3/125 (2013.01); B44F 9/00 (2013.01); G10H 1/346 (2013.01);
Abstract
There is provided a keyboard instrument in which a plurality of white keys and a plurality of black keys are arranged in a widthwise direction, a total width dimension of the plurality of white keys that constitute one octave is set to 160 mm or less, and a width dimension of an upper surface of each of the black keys is set to 9 mm or more and 10.5 mm or less.