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:
Mar. 22, 1983
Filed:
Jun. 25, 1981
Applicant:
Inventor:
Hideomi Ishibe, Hirakata, JP;
Assignee:
Nippon Seisen Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22F / ;
U.S. Cl.
CPC ...
75 / ; 75 / ; 75 / ; 1481261 ;
Abstract
A columnar stainless steel short fiber having a diameter of 2 to 20 .mu.m. and an aspect ratio of the length to the diameter of 1 to 50. The short fiber is prepared by heat-treating a stainless steel fiber for adjusting the growth of crystal grains and subjecting the heat-treated fiber to intergranular selective corrosion in an acidic solution. The short fiber is useful as a material of sintered metallic filters, and sintered compacts of the short fiber have high porosity, uniform pore size, excellent mechanical strength and small pressure loss.