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:
Dec. 02, 2003
Filed:
Feb. 20, 2002
Masanori Chiba, Gunma-ken, JP;
Nisshinbo Industries, Inc., Tokyo, JP;
Abstract
A non-asbestos friction material is made by molding and curing a composition which includes a fibrous base other than asbestos, a binder, an organic filler, an inorganic filler and an abrasive. The abrasive is composed of one or more inorganic substance selected from among inorganic substances having a Mohs hardness of at least 4.5 and inorganic substances having a Mohs hardness of less than 4.5 and containing at least 50 wt % of a component having a Mohs hardness of at least 4.5. The total amount of organic substances and the total amount of abrasive are in a volumetric ratio of from 1.5/1 to 3.5/1. The friction material thus constituted generates little squeal or other undesirable noise and has a good wear resistance.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile