Inventor
UMEMURA TOSHIKAZU
JP20 patents
Patents
20 patentsUS5116547AMay 26, 1992
Method of coloring polycarbonate extruded or molded products for optical members
MITSUBISHI GAS CHEMICAL CO167 citations92
US4343929AAug 10, 1982
Process for continuously polymerizing trioxane
MITSUBISHI GAS CHEMICAL CO30 citations90
US4918160AApr 17, 1990
Method for producing purified polycarbonate resin with fluid containing CO2
MITSUBISHI GAS CHEMICAL CO30 citations89
US4845193AJul 4, 1989
Process for producing polycarbonate resin molding material having low particle content with vented extruder
MITSUBISHI GAS CHEMICAL CO21 citations80
US4526921AJul 2, 1985
Acetal resin composition
MITSUBISHI GAS CHEMICAL CO21 citations80
US4506053AMar 19, 1985
Acetal resin composition
MITSUBISHI GAS CHEMICAL CO22 citations77
US5426159AJun 20, 1995
Process for producing grafted polycarbonate resin
MITSUBISHI GAS CHEMICAL CO15 citations73
US4115369ASep 19, 1978
Process for continuous production of oxymethylene polymers
MITSUBISHI GAS CHEMICAL CO12 citations73
US5717055AFeb 10, 1998
Production method of polycarbonate resin pellets
MITSUBISHI GAS CHEMICAL CO14 citations72
US5438108AAug 1, 1995
Graft precursor and process for producing grafted aromatic polycarbonate resin
MITSUBISHI GAS CHEMICAL CO12 citations72
US5073313ADec 17, 1991
Process for producing low-dust-level polycarbonate molded article
MITSUBISHI GAS CHEMICAL CO16 citations72
US4339569AJul 13, 1982
Process for continuous production of oxymethylene polymer or copolymer
MITSUBISHI GAS CHEMICAL CO12 citations72
US4366305ADec 28, 1982
Process for heat stabilizing oxymethylene copolymers
MITSUBISHI GAS CHEMICAL CO10 citations71
US4087411AMay 2, 1978
Process for preparing oxymethylene polymers
MITSUBISHI GAS CHEMICAL CO17 citations71
US4681927AJul 21, 1987
Process for producing oxymethylene copolyer
MITSUBISHI GAS CHEMICAL CO9 citations70
US5427998AJun 27, 1995
Method for preparing a thermal transfer image-receiving sheet involving a polycarbonate dye-receiving layer
MITSUBISHI GAS CHEMICAL CO4 citations62
US4301273ANov 17, 1981
Process for stabilizing oxymethylene copolymers
MITSUBISHI GAS CHEMICAL CO5 citations61
US5244605ASep 14, 1993
Process for producing halogenated polycarbonate molded article
MITSUBISHI GAS CHEMICAL CO4 citations60
US4189565AFeb 19, 1980
Process for polymerizing trioxane
MITSUBISHI GAS CHEMICAL CO2 citations60
US5095049AMar 10, 1992
Process for producing a low-particle-content transparent thermoplastic resin solution
MITSUBISHI GAS CHEMICAL CO5 citations57