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. 06, 1988
Filed:
Dec. 10, 1987
Applicant:
Inventors:
Assignee:
Mitsubishi Chemical Industries Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D01D / ; D01F / ;
U.S. Cl.
CPC ...
264 292 ; 264 294 ; 264136 ; 264138 ; 264145 ; 264157 ; 2642907 ; 2642978 ; 2642902 ; 264D / ;
Abstract
A method for fibrillating carbonaceous fibers, which comprises contacting a tow of carbonaceous fibers to rotating surfaces of rollers for fibrillation, wherein at least two rollers are disposed so that the center axes of the rollers intersect the direction of advance of the tow of carbonaceous fibers and the rotating surfaces of the rollers are substantially alternately inclined in opposite directions, thereby to exert a shearing force to the tow in a direction transverse to the direction of advance of the tow.