P

Inventor

YASUZAWA TOHRU

US5 patents
⚠️ This page may combine multiple inventors who share the name “YASUZAWA TOHRU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

KYOWA HAKKO KOGYO KK

4 patents
US5395836AMar 7, 1995

8-tricycloalkyl xanthine derivatives

KYOWA HAKKO KOGYO KK27 citations90
US5008271AApr 16, 1991

DC-88A derivatives

KYOWA HAKKO KOGYO KK1 citations51
US4692310ASep 8, 1987

Substance K-259-2 and a process for producing the same

KYOWA HAKKO KOGYO KK1 citations51
US6107064AAug 22, 2000

Process for producing xanthine derivatives with bacteria and fungi

KYOWA HAKKO KOGYO KK0 citations40

KYOWA HAKKO ROGYO KABUSHIKI KA

1 patent
US5079232AJan 7, 1992

Compound ks-505 useful for improving cerebral function

KYOWA HAKKO ROGYO KABUSHIKI KA3 citations54