YT

Yasumi Takano

NC Nippon Tungsten Co.: 1 patents #45 of 139Top 35%
Overall (All Time): #3,845,171 of 4,157,543Top 95%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5093290 Silicon nitride type sintered bodies and method for producing the same Mitsuhiko Furukawa, Masaharu Shiroyama, Mitsuyoshi Nagano 1992-03-03