Inventor

OYAMA YASUAKI

JP3 patents

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

HAYASHIBARA BIOCHEM LAB

1 patent

US5262153ANov 16, 1993

Skin-whitening agent

HAYASHIBARA BIOCHEM LAB83 citations93

SANSHO SEIYAKU KK

1 patent

US4990330AFeb 5, 1991

Compositions for topical use having melanin synthesis-inhibiting activity

SANSHO SEIYAKU KK45 citations88

YUAKA MISHIMAZO

1 patent

US5077059ADec 31, 1991

Process for preparing melanogenic inhibitor, and pigmentation-lightening agent containing the same

YUAKA MISHIMAZO8 citations62