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.

Date of Patent:
Jul. 13, 1976

Filed:

Jun. 03, 1975
Applicant:
Inventors:

Hiroshi Watanabe, Hiratsuka, JA;

Isao Shimamura, Hiratsuka, JA;

Norio Murohushi, Yamakita, JA;

Masao Abe, Yokohama, JA;

Yoshio Ando, Tokyo, JA;

Masaaki Takahashi, Tokyo, JA;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25D / ; C25D / ;
U.S. Cl.
CPC ...
204211 ; 204205 ; 204206 ;
Abstract

A continuous electrolytic treatment apparatus for anodic oxidation and electrolytic coloring operations on an object such as a strip, wire or foil of aluminum and its alloys, wherein there are provided electric field buffer means which comprises a plurality of self-standing plates of plastic resin or the like having an electrically insulating property. The electric field buffer means are located at least in one zone in the electrolytic cell so that it can serves to effectively buffer concentration of excessive electric current to the interface between the object and the electrolytic solution at the above mentioned zone, thereby preventing burning in the surface of the object or in the oxide film formed thereon during the anodic oxidation treatment and unevenness in coloring of the object during the electrolytic coloring operation due to such current concentration, particularly when treating with a high current density.


Find Patent Forward Citations

Watanabe, Hiroshi. (1976). Continuous apparatus for electrolytic treatment on a long structure of (U.S. Patent No. 3969211). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3969211

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