Inventor · disambiguated record
Hitoshi Hatakeyama
Also filed as: HATAKEYAMA HITOSHI
4 granted patents·35 citations·filing 1989–2001
75Inventor score
Files withOKI ELECTRIC IND CO LTD1PETROLEUM ENERGY CENTER FOUND1SHOWA SHELL SEKIYU1TORAY INDUSTRIES1
Top patents by PatentIndex Score
4 records- 0164US6536593B2Embossed carrier tapeOKI ELECTRIC IND CO LTD·Filed 2001·Granted Mar 25, 2003·14 cites·8 claims
- 0259US4992619AProcess for separating methyl substituted naphthalene by crystallization under pressureSHOWA SHELL SEKIYU·Filed 1989·Granted Feb 12, 1991·7 cites·17 claims
- 0351US5220098AProcess for separating 2, 7-dimethylnaphthalene under pressurePETROLEUM ENERGY CENTER FOUND·Filed 1991·Granted Jun 15, 1993·6 cites·3 claims
- 0447US6555559B15,6,7-trinor-4,8-inter-m-phenylene PGI2, derivative and drugs containing the sameTORAY INDUSTRIES·Filed 1999·Granted Apr 29, 2003·8 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →