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:
Feb. 19, 1985
Filed:
Jan. 25, 1983
Applicant:
Inventor:
Yuji Enomoto, Ibaraki, JP;
Assignees:
Agency of Industrial Science & Technology, Tokyo, JP;
Ministry of International Trade & Industry, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
427 39 ; 427 35 ; 427 38 ; 427 46 ; 134-1 ;
Abstract
An article to be coated by vacuum deposition of a metallic substance is given a preliminary surface treatment to ensure perfect deposition of the metallic substance. This preliminary surface treatment is effected by placing the article under treatment in an atmosphere of the same reaction gas vacuumized to the same degree as during vacuum deposition, causing a hot filament to release thermionicelectrons within the atmosphere thereby inducing the phenomenon of discharge, and causing ions by the discharge to bombard the article under treatment.