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:
Apr. 24, 2001
Filed:
Jun. 24, 1999
Applicant:
Inventors:
Assignee:
Fuji Photo Film Co., Ltd., Minami-Ashigara, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25F 3/02 ;
U.S. Cl.
CPC ...
C25F 3/02 ;
Abstract
This invention provides an apparatus for electrolytic treatment capable of removing the ununiformity according to the frequency and can achieve high treating speed and high current density treatment, which comprises etching a metal web electrolytically using alternating waveform current continuously, wherein a frequency-variable means having an ability to vary frequency of an electric power supply of said alternating waveform current arbitrarily is provided, and a method therefor.