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:
Jan. 23, 2001
Filed:
Aug. 13, 1998
Jon A. Casey, Poughkeepsie, NY (US);
Michael A. Cohn, Ramsey, NJ (US);
Michael E. Cropp, La Grangeville, NY (US);
Candace A. Sullivan, Pleasant Valley, NY (US);
Robert J. Sullivan, Pleasant Valley, NY (US);
Andrew H. Vogel, Hopewell Junction, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An interface layer for separating first and second microelectronic ceramic substrates during firing includes a thermally degradable binder, preferably a polymer, that degrades at temperatures above room temperature and below a firing temperature for the microelectronic ceramic substrates, and a separating material, such as boron nitride or graphite. The method of making the interface layer includes mixing the binder, one or more solvents for the binder, a plasticizer and the separating material for a sufficient period of time to form a homogeneous mass, then casting the material in a thin sheet to form the interface layer.