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. 05, 2008
Filed:
Sep. 23, 2004
Applicants:
Kai Yasuoka, Tokyo, JP;
Hitoshi Kurosaki, Tokyo, JP;
Kenichi Kazama, Tokyo, JP;
Inventors:
Assignee:
Shinano Electric Refining Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 44/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for producing a polyurethane grinding tool is provided, the process including a step of mixing one or more types of polyol component selected from the group consisting of polyether polyols and polyester polyols with inorganic abrasive grains, a step of mixing an organic polyisocyanate component with inorganic abrasive grains, a step of uniformly mixing the polyol component mixed with the abrasive grains and the polyisocyanate component mixed with the abrasive grains by means of a rotary-static mixer, and a step of molding the mixture thus obtained by reacting the mixture in a mold.