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:
Mar. 30, 2004
Filed:
Jun. 18, 2001
Alexander W. Barr, Louisville, KY (US);
Samuel C. Ramey, Naperville, IL (US);
Larry Edward Moser, Marysville, IN (US);
Robinson Nugent, Inc., New Albany, IN (US);
Abstract
A method for increasing the impedance of a via for providing a conductive path through a printed circuit board is disclosed. The method comprises the steps of forming a conductive pad on the printed circuit board, forming a non-threaded opening extending through the conductive pad and through the printed circuit board to form an annular conductive pad surrounding the non-threaded opening, forming a conductive metal barrel lining the inner wall of the non-threaded opening connected to the annular conductive pad, and cutting material from the metal barrel to leave at least one conductive strip extending axially along the inner wall of the opening without cutting material from the annular conductive pad so that the at least one conductive strip is connected to an undivided annular conductive pad.