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:
Jan. 27, 2004
Filed:
Jan. 16, 2001
Daikin Industries, Ltd., Osaka, JP;
Abstract
A carbon black filler for crosslinkable elastomer composition having a content of impurity metals of not more than 300 ppm and a pH value of 5.0 to 11.0. The filler can be obtained by subjecting a starting carbon black filler to extraction treatment with an acid to reduce a content of impurity metals of the filler and then alkali treatment with an alkali to neutralize a remaining acid. The filler does not cause a crosslinking failure even when added to an elastomer composition and can provide an elastomer molded article suitable as a very clean sealing material for semi-conductor production apparatuses.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile