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:
Oct. 27, 1987
Filed:
Jun. 02, 1986
Greg D Garlough, Vadnais Heights, MN (US);
Kurt E Heikkila, Shoreview, MN (US);
ETD Technology Inc., Shoreview, MN (US);
Abstract
A sulfuroxy acid reducing agent composition can be used to treat the metallic conductive pathways formed in or on the surface of printed wiring boards in order to assure that the copper pathways are firmly and securely bonded to laminate layers of layered printed wiring board articles. The sulfuroxy acid reducing agent treatment promotes the rapid formation of a uniform metal oxide layer on the printed wiring board conductive pathways, when the printed circuit boards are exposed to an oxiding agent, which insures that the compositions used in forming the printed wiring board laminates do not interact with the active copper metal preventing delamination.