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. 10, 2012
Filed:
Feb. 10, 2010
Applicants:
Tatsuya Hiraku, Hamamatsu, JP;
Hiroyasu Abe, Hamamatsu, JP;
Inventors:
Tatsuya Hiraku, Hamamatsu, JP;
Hiroyasu Abe, Hamamatsu, JP;
Assignee:
Yamaha Corporation, Hamamatsu-Shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10D 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An acoustic timber for use in an acoustic musical instrument is constituted of a plurality of woody members, such as woody fibers, woody veneers, blasted bamboo fibers, and defibrated bamboo fibers, whose fiber length is 50 mm or more. An epoxy resin is impregnated into the woody members with an impregnation factor of 5 weight-percent through 50 weight-percent. The woody members impregnated with the epoxy resin are joined together by way of heating and compressive molding so that the fibers thereof are uniformly aligned in the desired fiber-aligning direction.