Inventor

TOMA MASAAKI

JP4 patents

Patents

4 patents

US5589077ADec 31, 1996

Liquid filtering and supply system controlling recirculation responsive to pressure difference across filter

SUMITOMO CHEMICAL CO23 citations89

US5334774AAug 2, 1994

Process for purifying phenol

SUMITOMO CHEMICAL CO12 citations68

US5304684AApr 19, 1994

Process for producing phenol and methyl ethyl ketone

SUMITOMO CHEMICAL CO19 citations68

US6120653ASep 19, 2000

Separation and purification method of t-butyl-methylphenol isomer

SUMITOMO CHEMICAL CO0 citations37