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:
May. 06, 1997
Filed:
Jun. 06, 1995
Charles R Davis, Wappingers Falls, NY (US);
Frank D Egitto, Binghamton, NY (US);
Eugene R Skarvinko, Binghamton, NY (US);
International Business Machines Corporation, Endicott, NY (US);
Abstract
A multi-layer electronic circuit package including at least one electrically conductive plane, a first organic polymeric dielectric material having a first optical absorbency to an ablating wavelength of laser light, and a second organic polymeric dielectric material having a second optical absorbency to the ablating wavelength of laser light. The first and second optical absorbencies being different from each other. A first layer of one of the organic polymeric materials overlays at least one surface of the at least one electrically conductive plane and a second layer of a different organic polymeric material with a different optical absorbency to the material in the first layer overlays the first layer.