Assignee
TOHO KINZOKU KK
JP·4 granted patents·33 citations·filing 1988–1996
Top patents by PatentIndex Score
4 records- 0146US5889220ACopper-tungsten alloys and their manufacturing methodsTOHO KINZOKU KK·Filed 1996·Granted Mar 30, 1999·20 cites·2 claims
- 0231US5905938AMethod of manufacturing a semiconductor substrate materialTOHO KINZOKU KK·Filed 1995·Granted May 18, 1999·7 cites·4 claims
- 0324US5512240ATungsten electrode materialTOHO KINZOKU KK·Filed 1993·Granted Apr 30, 1996·4 cites·1 claims
- 0420US4882519ADischarge electrode material composed of yttrium and rhenium or rutheniumTOHO KINZOKU KK·Filed 1988·Granted Nov 21, 1989·2 cites·3 claims
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