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. 29, 1992
Filed:
May. 23, 1991
Applicant:
Inventors:
Tetsuo Aoyama, Niigata, JP;
Mayumi Takahashi, Niigata, JP;
Toshio Kondo, Niigata, JP;
Hideki Fukuda, Niigata, JP;
Assignee:
Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
L23F / ;
U.S. Cl.
CPC ...
106203 ; 106162 ; 156625 ; 156665 ; 252 791 ; 127 29 ;
Abstract
A surface treating agent for an aluminum line pattern substrate is disclosed, comprising an aqueous solution containing 0.01 to 15% by weight of quaternary ammonium hydroxide represented by the general formula: ##STR1## wherein R is an alkyl group having 1 to 3 carbon atoms, or a hydroxy-substituted alkyl group having 1 to 3 carbon atoms, and R.sup.1, R.sup.2 and R.sup.3 are independently an alkyl group having 1 to 3 carbon atoms, and 0.1 to 20% by weight of sugar or sugar alcohol. This agent can inhibit the after-corrosion of aluminum effectively.