Inventor · disambiguated record
Masanao Nakagawa
Also filed as: ITO YOSHIHARU · NAKAGAWA MASANAO
3 granted patents·95 citations·filing 1973–1977
75Inventor score
Top patents by PatentIndex Score
3 records- 0189US4202868AProduction of high-density carbon materialsMARUZEN PETROCHEM CO LTD·Filed 1977·Granted May 13, 1980·46 cites·11 claims
- 0281US3932494AThiohumic acid, a process for preparing same, and its use for absorbing heavy metal ionsAGENCY IND SCIENCE TECHN·Filed 1973·Granted Jan 13, 1976·35 cites·2 claims
- 0358US3956436AProcess for producing micro-beads and product containing the sameAGENCY IND SCIENCE TECHN·Filed 1973·Granted May 11, 1976·14 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →