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:
Apr. 18, 2017
Filed:
Apr. 16, 2014
Nippon Takkyu Co., Ltd., Tokyo, JP;
Toray Industries, Inc., Tokyo, JP;
Hidenori Mochizuki, Tokyo, JP;
Hitoshi Egawa, Tokyo, JP;
Tetsu Sato, Koga, JP;
Tadakatsu Takasaki, Ichihara, JP;
Satoshi Toki, Tokyo, JP;
Nippon Takkyu Co., Ltd., , JP;
Toray Industries, Inc., , JP;
Abstract
A table tennis ball faithfully reproduces the playing characteristics of celluloid table tennis balls without using celluloid, and a thermoplastic resin composition for table tennis balls provides a table tennis ball having an excellent balance of elastic modulus, impact resistance, and density. The table tennis ball is composed of a celluloid-free thermoplastic resin or thermoplastic resin composition having a flexural modulus according to ISO 178 of 1650 MPa or more, a Charpy impact strength according to ISO 179 of 20 kJ/mor more, and a density according to ISO 1183 of less than 1.20 g/cm, has a diameter of 39.0 mm or more, and weighs 2.0 to 3.5 g.