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:
Jan. 22, 1991
Filed:
May. 23, 1988
Applicant:
Inventors:
Toshiro Kobayashi, Toyohashi, JP;
Hisashi Hiraishi, Tsuzuki, JP;
Makoto Hineno, Hirakata, JP;
Tomoshi Kawata, Yokohama, JP;
Yuuji Kohara, Kodaira, JP;
Masaharu Saito, Hatano, JP;
Assignees:
Kubota Ltd., Osaka, JP;
Kabushikikaisha Tokyo Kikai Seisakusho, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B41F / ;
U.S. Cl.
CPC ...
101348 ; 29132 ;
Abstract
A roller for use in lithography which comprises a surface layer of finely and uniformly mixed ultra-hard material and lipophilic material. The ultra-hard material is preferably tungsten carbide-cobalt and the lipophilic material is preferably aluminum bronze casting, the aluminum bronze casting being mixed with the tungsten carbide-cobalt in the ratio of 25-40% by weight.