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:
May. 20, 1986
Filed:
Sep. 07, 1982
Applicant:
Inventor:
Takayuki Izumi, Ohi, JP;
Assignee:
Toa Nenryo Kogyo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10C / ; D01F / ; D01F / ;
U.S. Cl.
CPC ...
208 22 ; 208 39 ; 208 40 ; 4234472 ; 4234474 ; 4234476 ;
Abstract
This invention describes a substantially homogeneous, optically anisotropic carbonaceous pitch characterized in that the major portion of said pitch consists of a continuous, optically anisotropic phase, said optically anisotropic phase contains spherules of an optically isotropic phase having diameters of not more than about 100 .mu.m and dispersed in said optically anisotropic phase, the content of said optically isotropic spherules is up to about 20% on the basis of said pitch as a whole, said pitch contains at least about 30 wt % (based on said pitch) of a quinoline-soluble component, and said pitch has a lower softening point.