Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Metal and nonmetal in final product
Patent
1989-03-24
1990-01-09
Lechert, Jr., Stephen J.
Powder metallurgy processes
Powder metallurgy processes with heating or sintering
Metal and nonmetal in final product
419 10, 419 12, 419 19, 419 20, 419 23, 419 32, 419 53, 419 54, 428457, 428698, B22F 100
Patent
active
048927031
ABSTRACT:
A surface structure of A1N substrate comprising:
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Iio Satoshi
Okuno Akiyasu
Bhat Nina
Lechert Jr. Stephen J.
NGK Spark Plug Co. Ltd.
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