Inventor

KOISHI MASUMI

JP10 patents

⚠️ This page may combine multiple inventors who share the name “KOISHI MASUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SHISEIDO CO LTD

2 patents

US5122418AJun 16, 1992

Composite powder and production process

SHISEIDO CO LTD223 citations97

US5182103AJan 26, 1993

Magnesium aluminometasilicate coated composite powder and use thereof

SHISEIDO CO LTD45 citations91

NARA MACHINERY CO LTD

2 patents

US4915987AApr 10, 1990

Method of improving quality of surface of solid particles and apparatus thereof

NARA MACHINERY CO LTD90 citations93

US5336271AAug 9, 1994

Method for increasing the proportion of a crystalline organic compound which remains uncrystallized in a composite particulate product and suppressing recrystallization

NARA MACHINERY CO LTD10 citations68

TOYO INK MFG CO

2 patents

US4835082AMay 30, 1989

Toner for electrophotography

TOYO INK MFG CO9 citations65

US4902596AFeb 20, 1990

Toner for electrophotography with the change controlling agent dispersed therein

TOYO INK MFG CO5 citations57

SAN EI SUCROCHEMICAL CO LTD

1 patent

US5919486AJul 6, 1999

Powder preparation and a process for preparing the same

SAN EI SUCROCHEMICAL CO LTD24 citations87

KISHOHIN KAGAKU KAIHO KENKYUSH

1 patent

US4309411AJan 5, 1982

Skin cleansing preparation

KISHOHIN KAGAKU KAIHO KENKYUSH17 citations66

TOSHIBA KK

1 patent

US4880666ANov 14, 1989

Method of manufacturing magnetic recording medium

TOSHIBA KK4 citations61

YUASA MAKOTO

1 patent

US8298387B2Oct 30, 2012

Reactive oxygen species measuring device

YUASA MAKOTO0 citations33