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:
Mar. 01, 1988
Filed:
Oct. 20, 1986
Applicant:
Inventors:
Assignees:
Dainippon Screen Mfg. Co., Ltd., Kyoto, JP;
Sanyo-Kokusaku Pulp Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ; A61L / ;
U.S. Cl.
CPC ...
428349 ; 428507 ; 428511 ; 428513 ; 428514 ; 427 97 ; 427154 ; 156155 ;
Abstract
Disclosed is a masking tape suitable for use in manufacturing a printed circuit board. The masking tape comprises a water soluble paper as a tape base material, and a water soluble adhesive agent applied to one side of the paper. A method of filling through-holes employing such a water soluble masking tape in a process of manufacturing a printed circuit board is also disclosed.