Inventor
MASUYAMA TETSUO
13 patents
⚠️ This page may combine multiple inventors who share the name “MASUYAMA TETSUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MITSUBISHI CHEM IND
7 patentsUS4423252ADec 27, 1983
Process for preparing bisphenols
MITSUBISHI CHEM IND63 citations94
US4478956AOct 23, 1984
Process for preparing bisphenols using pyridinealkanethiol derivatized sulphonated cation exchange resins
MITSUBISHI CHEM IND39 citations91
US4405823ASep 20, 1983
Process for the production of phenols
MITSUBISHI CHEM IND8 citations73
US4165441AAug 21, 1979
Process for the preparation of styrene
MITSUBISHI CHEM IND6 citations73
US4041082AAug 9, 1977
Process for producing aldehydes
MITSUBISHI CHEM IND19 citations73
US4556751ADec 3, 1985
Catalytic isomerization process of dimethylnaphthalenes
MITSUBISHI CHEM IND10 citations71
US4740289AApr 26, 1988
Process for the hydrogenolysis of a coal liquid bottom
MITSUBISHI CHEM IND0 citations51
NIPPON PISTON RING CO LTD
5 patentsUS5092361AMar 3, 1992
Inline type check valve
NIPPON PISTON RING CO LTD52 citations92
US6261389B1Jul 17, 2001
Synchronizer ring
NIPPON PISTON RING CO LTD27 citations91
US6860485B2Mar 1, 2005
Piston ring
NIPPON PISTON RING CO LTD22 citations89
US5900559AMay 4, 1999
Synchronizer ring
NIPPON PISTON RING CO LTD16 citations73
US5861565AJan 19, 1999
Synchronizer ring
NIPPON PISTON RING CO LTD7 citations66