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. 20, 1989
Filed:
Feb. 05, 1988
Applicant:
Inventors:
Muneo Ishida, Hamamatsu, JP;
Mithuo Yamashita, Hamamatsu, JP;
Masanari Onishi, Himeji, JP;
Masahiro Tanaka, Hyogo, JP;
Assignee:
Kawai Musical Instrument Manufacturing Co., Ltd., Hamamatsu, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10C / ;
U.S. Cl.
CPC ...
84437 ; 84438 ; 8445 / ;
Abstract
A keyboard for a musical instrument is composed of a resin composition, having a durometer hardness of 82 or larger, and the composition comprises a cellulose derivative resin and a silica having 3.0 or less silanol groups in the area of 100 square angstrom and a BET specific surface area of 10 to 210 m.sup.2 /g. It may comprises a substrate and the keyboard.