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:
May. 01, 2012
Filed:
Apr. 23, 2007
Applicants:
Takeshi Fukuda, Osaka, JP;
Satoshi Maruyama, Osaka, JP;
Junji Hirose, Osaka, JP;
Kenji Nakamura, Osaka, JP;
Masato Doura, Osaka, JP;
Inventors:
Takeshi Fukuda, Osaka, JP;
Satoshi Maruyama, Osaka, JP;
Junji Hirose, Osaka, JP;
Kenji Nakamura, Osaka, JP;
Masato Doura, Osaka, JP;
Assignee:
Toyo Tire & Rubber Co., Ltd., Osaka-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B24D 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A polishing pad of excellent durability has a polishing layer is arranged on a base material layer, and the polishing layer comprises a thermosetting polyurethane foam having roughly spherical interconnected cells with an average cell diameter of 35 to 300 μm.