Inventor · disambiguated record
Masumi Koishi
Also filed as: KOISHI MASUMI
9 granted patents·427 citations·filing 1980–1997
90Inventor score
Files withNARA MACHINERY CO LTD2SHISEIDO CO LTD2TOYO INK MFG CO2KISHOHIN KAGAKU KAIHO KENKYUSH1SAN EI SUCROCHEMICAL CO LTD1
Top patents by PatentIndex Score
9 records- 0196US5122418AComposite powder and production processSHISEIDO CO LTD·Filed 1990·Granted Jun 16, 1992·223 cites·5 claims
- 0290US4915987AMethod of improving quality of surface of solid particles and apparatus thereofNARA MACHINERY CO LTD·Filed 1988·Granted Apr 10, 1990·90 cites·28 claims
- 0377US5182103AMagnesium aluminometasilicate coated composite powder and use thereofSHISEIDO CO LTD·Filed 1989·Granted Jan 26, 1993·45 cites·13 claims
- 0458US5919486APowder preparation and a process for preparing the sameSAN EI SUCROCHEMICAL CO LTD·Filed 1997·Granted Jul 6, 1999·24 cites·18 claims
- 0548US4309411ASkin cleansing preparationKISHOHIN KAGAKU KAIHO KENKYUSH·Filed 1980·Granted Jan 5, 1982·17 cites·13 claims
- 0646US4835082AToner for electrophotographyTOYO INK MFG CO·Filed 1987·Granted May 30, 1989·9 cites·13 claims
- 0742US5336271AMethod for increasing the proportion of a crystalline organic compound which remains uncrystallized in a composite particulate product and suppressing recrystallizationNARA MACHINERY CO LTD·Filed 1992·Granted Aug 9, 1994·10 cites·14 claims
- 0839US4880666AMethod of manufacturing magnetic recording mediumTOSHIBA KK·Filed 1987·Granted Nov 14, 1989·4 cites·5 claims
- 0936US4902596AToner for electrophotography with the change controlling agent dispersed thereinTOYO INK MFG CO·Filed 1987·Granted Feb 20, 1990·5 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →