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. 15, 1998
Filed:
Oct. 31, 1996
Applicant:
Inventor:
Ching-Ping Wong, Norcross, GA (US);
Assignee:
Lucent Technologies Inc., Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B08B / ; C11D / ; C11D / ; C11D / ;
U.S. Cl.
CPC ...
510175 ; 134-2 ; 134 40 ; 134 42 ; 510255 ; 510258 ;
Abstract
The specification describes a cleaning process for electronic devices and assemblies such as printed wiring boards. In the cleaning process deterioration of a terpene based cleaning solution, as evidenced by yellowing, is prevented using a copper chelating additive.