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. 19, 1993
Filed:
Jul. 22, 1991
Applicant:
Inventors:
Assignee:
Nippon CMK Corp., , JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B44C / ; C23F / ;
U.S. Cl.
CPC ...
156640 ; 156656 ; 1566591 ; 156666 ; 156345 ; 156901 ;
Abstract
An etching method of forming circuit patterns on a printed circuit board is disclosed. The etching method comprises step of supplying etching solvent with discharge pressure of substantially 5.about.10 kg/cm.sup.2 and discharge particle diameter of 100.about.200 .mu.m.
Seki, Kameharu. (1993). Etching method of forming microcircuit patterns on a printed circuit (U.S. Patent No. 5180465). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5180465
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile