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:
Apr. 30, 1991
Filed:
Sep. 28, 1989
Applicant:
Inventors:
Minoru Sasabe, Chiba, JP;
Masao Imamura, Yamagata, JP;
Yasunobu Yoshida, Yamagata, JP;
Shinya Andoh, Yamagata, JP;
Hiroshi Miyake, Yamagata, JP;
Assignee:
Tosoh Corporation, Shinnanyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22C / ; C22C / ;
U.S. Cl.
CPC ...
501 87 ; 75233 ; 75303 ; 75313 ; 148423 ; 419 14 ; 419 19 ; 420 71 ; 420116 ; 420129 ; 420428 ; 420588 ; 420590 ; 423417 ;
Abstract
A chromium additive of the formula: Cr.sub.x C.sub.y O.sub.z where 0.04.ltoreq.y.ltoreq.0.35, and 0.03.ltoreq.z.ltoreq.0.30 for x=1, said additive having an X ray diffraction peak at d=3.32 .ANG. (2.theta.=26.8.degree.).