Inventor · disambiguated record
Hisao Ishizu
Also filed as: ISHIZU HISAO
4 granted patents·131 citations·filing 1984–1988
80Inventor score
Technology areasG03G
Files withRICOH KK4
Top patents by PatentIndex Score
4 records- 0193US4875063AElectrostatic recording apparatusRICOH KK·Filed 1987·Granted Oct 17, 1989·58 cites·11 claims
- 0283US4891678AElectrostatic recording apparatus having a cooled and insulated waste toner containerRICOH KK·Filed 1988·Granted Jan 2, 1990·30 cites·5 claims
- 0378US4750020ASheet feeding apparatusRICOH KK·Filed 1986·Granted Jun 7, 1988·24 cites·11 claims
- 0471US4629309ADeveloper supply system for dry process electrophotographic recording apparatusRICOH KK·Filed 1984·Granted Dec 16, 1986·19 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →