Inventor · disambiguated record
Sumiyoshi Takeda
Also filed as: TAKEDA SUMIYOSHI
3 granted patents·136 citations·filing 1979–1998
76Inventor score
Files withHITACHI LTD3
Top patents by PatentIndex Score
3 records- 0191US4300629ACross-fin tube type heat exchangerHITACHI LTD·Filed 1979·Granted Nov 17, 1981·61 cites·25 claims
- 0286US4365667AHeat exchangerHITACHI LTD·Filed 1980·Granted Dec 28, 1982·48 cites·8 claims
- 0365US6050328AHeat exchanger and air conditioner using sameHITACHI LTD·Filed 1998·Granted Apr 18, 2000·27 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →