Inventor · disambiguated record
Tsutomu Idai
Also filed as: IDAI TSUTOMU
3 granted patents·70 citations·filing 1974–1988
71Inventor score
Top patents by PatentIndex Score
3 records- 0192US4927979AProcess for the preparation of p-ethylphenolMARUZEN PETROCHEM CO LTD·Filed 1988·Granted May 22, 1990·49 cites·20 claims
- 0275US4024076AProcess for producing granular sulfurized material, granular carbon or granular activated carbonMARUZEN OIL CO LTD·Filed 1974·Granted May 17, 1977·19 cites·14 claims
- 0327US4847435AProcess for the recovery of high-purity m-ethylphenolMARUZEN PETROCHEM CO LTD·Filed 1988·Granted Jul 11, 1989·2 cites·24 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →