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:
Aug. 05, 1986
Filed:
Sep. 11, 1985
Applicant:
Inventor:
Ching-Ping Wong, Lawrence Township, Mercer County, NJ (US);
Assignee:
AT&T Technologies, Inc., Berkeley Heights, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23G / ; C23G / ;
U.S. Cl.
CPC ...
134 28 ; 134 29 ;
Abstract
In a method of cleaning a circuit board having a silicone encapsulated hybrid integrated circuit thereon, subsequent to aqueous solder flux residue removal with an ionic detergent, the board is cleaned with a low molecular weight organic acid such as formic, acetic or oxalic acid.