Inventor
IZUMISAWA YOSHIAKI
12 patents
⚠️ This page may combine multiple inventors who share the name “IZUMISAWA YOSHIAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MITSUBISHI CHEM IND
9 patentsUS4772748ASep 20, 1988
Process for producing highly pure terephthalic acid
MITSUBISHI CHEM IND114 citations96
US4593122AJun 3, 1986
Process for preparing terephthalic acid by the catalytic oxidation with air of p-xylene in a water containing acetic acid solvent
MITSUBISHI CHEM IND98 citations96
US4877900AOct 31, 1989
Process for preparing terephthalic acid of high quality
MITSUBISHI CHEM IND68 citations94
US4329493AMay 11, 1982
Process for producing terephthalic acid
MITSUBISHI CHEM IND31 citations92
US4197412AApr 8, 1980
Process for preparing terephthalic acid
MITSUBISHI CHEM IND19 citations82
US4051178ASep 27, 1977
Process for producing terephthalic acid
MITSUBISHI CHEM IND30 citations82
US4599465AJul 8, 1986
Process for producing orthoalkylphenols
MITSUBISHI CHEM IND6 citations68
US4562285ADec 31, 1985
Process for producing terephthalic acid
MITSUBISHI CHEM IND6 citations62
US4560793ADec 24, 1985
Process for producing terephthalic acid
MITSUBISHI CHEM IND3 citations62
MITSUBISHI CHEM CORP
3 patentsUS5567842AOct 22, 1996
Process for producing terephthalic acid
MITSUBISHI CHEM CORP111 citations91
US5557009ASep 17, 1996
Process for preparing an aqueous slurry of terephthalic acid
MITSUBISHI CHEM CORP18 citations69
US5420344AMay 30, 1995
Process for producing highly pure terephthalic acid
MITSUBISHI CHEM CORP7 citations65