Assignee

SAKAMOTO TAKAO

JP·2 granted patents·46 citations·filing 1986–2010

Technology mixB08B1 F28G1 H04R1

Top patents by PatentIndex Score

2 records

0184US4750547AMethod for cleaning inner surfaces of heat-transfer tubes in a heat-exchangerSAKAMOTO TAKAO·Filed 1986·Granted Jun 14, 1988·42 cites·1 claims
0272US8750554B2Speaker diaphragm and speaker deviceSAKAMOTO TAKAO·Filed 2010·Granted Jun 10, 2014·4 cites·7 claims

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