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:
Dec. 08, 1992
Filed:
Jul. 22, 1991
Applicant:
Inventors:
Assignee:
Nippon CMK Corp., , JP;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
156345 ; 156640 ;
Abstract
An etching apparatus for forming circuit patterns on a printed circuit board comprises a conveyor for conveying printed circuit boards, a solvent pump for pumping etching solution, nozzles for spraying etching liquid or water on the printed circuit board, and a rinsing device for rinsing the surface of the printed circuit board. The discharge pressure of the pump for the etching solvent is preferably in the range 5.about.10 kg/cm.sup.2 and the distance between the nozzles and the printed circuit board is 50.about.200 mm.
Seki, Kameharu. (1992). Etching apparatus for forming microcircuit patterns on a printed circuit (U.S. Patent No. 5169477). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5169477
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile