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:
Sep. 09, 2003
Filed:
Aug. 30, 2001
Applicant:
Inventors:
Katsunao Chikahata, Nagareyama, JP;
Koichiro Hayashi, Matsudo, JP;
Assignee:
Hitachi Powdered Metals Co., Ltd., Matsudo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22F 3/00 ;
U.S. Cl.
CPC ...
B22F 3/00 ;
Abstract
Disclosed is a sintered alloy material for valve guides, containing: 1.5% to 4% by mass of carbon; 1% to 20% by mass of copper; 0.1% to 2% by mass of tin; 0.01% or more than 0.01% and less than 0.1% by mass of phosphorus; and an iron base. The metallographic structure of the sintered alloy material has a matrix phase composed mainly of pearlite, and a free carbon phase being dispersed in the matrix phase.
Chikahata, Katsunao. (2003). Material for valve guides (U.S. Patent No. 6616726). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6616726
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile