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. 28, 1997
Filed:
Jun. 03, 1996
Jon Alfred Casey, Poughkeepsie, NY (US);
Carla Natalia Cordero, Wappingers Falls, NY (US);
Benjamin Vito Fasano, New Windsor, NY (US);
David Brian Goland, Croton, NY (US);
Robert Hannon, Wappingers Falls, NY (US);
Jonathan H Harris, Scotsdale, AZ (US);
Lester Wynn Herron, Hopewell Junction, NY (US);
Gregory Marvin Johnson, Poughkeepsie, NY (US);
Niranjan Mohanlal Patel, Wappingers Falls, NY (US);
Andrew Michael Reitter, Poughkeepsie, NY (US);
Subhash Laxman Shinde, Croton-on-Hudson, NY (US);
Rao Venkateswara Vallabhaneni, Wappingers Falls, NY (US);
Robert A Youngman, Paradise Valley, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Disclosed is an aluminum nitride body having graded metallurgy and a method for making such a body. The aluminum nitride body has at least one via and includes a first layer in direct contact with the aluminum nitride body and a second layer in direct contact with, and that completely encapsulates, the first layer. The first layer includes 30 to 60 volume percent aluminum nitride and 40 to 70 volume percent tungsten and/or molybdenum while the second layer includes 90 to 100 volume percent of tungsten and/or molybdenum and 0 to 10 volume percent of aluminum nitride.