Inventor · disambiguated record

Sumio Otsuka

Also filed as: OTSUKA SUMIO

2 granted patents·20 citations·filing 1999–1999

60Inventor score

Technology areasC07D

Files withJAPAN HYDRAZINE CO INC2

Top patents by PatentIndex Score

2 records

0162US6156906AProcess for the preparation of 5,5'-bi-1H-tetrazole saltJAPAN HYDRAZINE CO INC·Filed 1999·Granted Dec 5, 2000·12 cites·12 claims
0257US6040453AMethod for preparing 5,5'-bi-1H-tetrazole saltJAPAN HYDRAZINE CO INC·Filed 1999·Granted Mar 21, 2000·8 cites·4 claims

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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →