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:
Jun. 20, 1978
Filed:
Oct. 20, 1976
Applicant:
Inventors:
Norishige Tsukada, Nishinomiya, JA;
Kazuo Hagihara, Tokyo, JA;
Kozo Tsuji, Takatsuki, JA;
Masanori Fujimoto, Ibaraki, JA;
Tsuneyuki Nagase, Takatsuki, JA;
Assignees:
Sumitomo Chemical Company, Limited, Osaka, JA;
Hayashibara Biochemical Laboratories, Inc., BOTH OF, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41N / ;
U.S. Cl.
CPC ...
101465 ; 101451 ; 106-2 ;
Abstract
A protective coating material for lithographic printing plate, which comprises pullulan or pullulan derivatives. Said material is superior to hitherto used gum arabic solution in the protection of the surface of lithographic printing plate against oxidation and scumming as well as in the ability to enhance the hydrophilic character of metallic surface of a non-image area.