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:
Feb. 26, 2013
Filed:
Apr. 05, 2011
Akio Yamamoto, Hamamatsu, JP;
Hiroshi Nakaya, Hamamatsu, JP;
Tatsuya Hiraku, Hamamatsu, JP;
Toshiharu Fukushima, Hamamatsu, JP;
Akio Yamamoto, Hamamatsu, JP;
Hiroshi Nakaya, Hamamatsu, JP;
Tatsuya Hiraku, Hamamatsu, JP;
Toshiharu Fukushima, Hamamatsu, JP;
Yamaha Corporation, Hamamatsu-Shi, JP;
Abstract
A stick of a string instrument bow includes a base material having an arched-rod shaped carbon fiber resin layer made of carbon fiber resin and a glass fiber resin layer which covers the outer surface of the carbon fiber resin layer and is made of glass fiber resin, and the glass fiber resin layer has a non-adhesion portion formed of an air layer present within the glass fiber resin layer and an adhesion portion which does not include the air layer.