Inventor

OKITA TSUTOMU

JP93 patents

Patents

50 patents

US5079085AJan 7, 1992

Magnetic recording medium containing a binder which is chemically bonded to crosslinked resin fine particles contained in the magnetic layer

FUJI PHOTO FILM CO LTD78 citations96

US4571361AFeb 18, 1986

Antistatic plastic films

FUJI PHOTO FILM CO LTD98 citations96

US5525418AJun 11, 1996

Magnetic recording medium having a magnetic layer containing ferromagnetic powder and a polyurethane resin obtained from a polyolefin polyol or a polybutadiene polyol

FUJI PHOTO FILM CO LTD25 citations92

US4693927ASep 15, 1987

Radiation-setting composition containing (meth)acrylic copolymers containing acid groups

FUJI PHOTO FILM CO LTD15 citations81

US5747157AMay 5, 1998

Magnetic recording medium

FUJI PHOTO FILM CO LTD7 citations74

US5702821ADec 30, 1997

Magnetic recording medium comprising ferromagnetic powder and a specified polyurethane resin

FUJI PHOTO FILM CO LTD13 citations74

US5700541ADec 23, 1997

Magnetic recording medium

FUJI PHOTO FILM CO LTD12 citations74

US5612134AMar 18, 1997

Magnetic recording medium having a carbon protective layer and a fluoro-lubricant supplied from a backcoat layer

FUJI PHOTO FILM CO LTD10 citations74

US5607782AMar 4, 1997

Magnetic recording medium

FUJI PHOTO FILM CO LTD7 citations74

US5560983AOct 1, 1996

Magnetic recording medium comprising a magnetic layer and a sub layer containing an unsaturated alkyl carbonic ester

FUJI PHOTO FILM CO LTD11 citations74

US5258231ANov 2, 1993

Magnetic recording medium having ferromagnetic powder, a binder containing a specified vinyl chloride copolymer, polar group containing polyurethane resin and a fatty acid amide

FUJI PHOTO FILM CO LTD8 citations74

US5153063AOct 6, 1992

Magnetic recording medium having a vinyl-chloride resin and a urethane resin binder system each of which resins contain three percent or less of a low molecular weight resin fraction

FUJI PHOTO FILM CO LTD9 citations74

US5126215AJun 30, 1992

Magnetic recording medium having a surface with pores of specified average inlet diameter and wide pore size distribution controlled by calender treatment

FUJI PHOTO FILM CO LTD11 citations74

US5098783AMar 24, 1992

Magnetic recording medium having a backcoat layer comprising non-magnetic particles dispersed in a vinyl copolymer containing a dialkylaminoalkyl group

FUJI PHOTO FILM CO LTD11 citations74

US5091268AFeb 25, 1992

Magnetic recording medium lubricated by a three component fatty acid ester-fatty acid amide composition

FUJI PHOTO FILM CO LTD12 citations74

US5084341AJan 28, 1992

Magnetic recording medium comprising a polyurethane resin having a thio, thiocarboxy or dithiocarboxy group; a vinyl chloride resin containing a polar group and a hyroxy group; and a polyisocyanate compound

FUJI PHOTO FILM CO LTD8 citations74

US5082733AJan 21, 1992

Magnetic recording medium containing magnetic particles surface treated with a glycidyl compound

FUJI PHOTO FILM CO LTD10 citations74

US4959263ASep 25, 1990

Magnetic recording medium

FUJI PHOTO FILM CO LTD10 citations74

US4952435AAug 28, 1990

Adhesive for a base-mounted flexible magnetic disc

FUJI PHOTO FILM CO LTD12 citations74

US4937098AJun 26, 1990

Method for manufacturing a magnetic recording medium

FUJI PHOTO FILM CO LTD14 citations74

US4880692ANov 14, 1989

Magnetic recording medium

FUJI PHOTO FILM CO LTD10 citations74

US4873138AOct 10, 1989

Metallic thin film type magnetic recording medium

FUJI PHOTO FILM CO LTD8 citations74

US4810435AMar 7, 1989

Method of making substrate for magnetic recording medium

FUJI PHOTO FILM CO LTD13 citations74

US4800458AJan 24, 1989

Recording sheet bonded to a substrate in a magnetic disk

FUJI PHOTO FILM CO LTD9 citations74

US4788103ANov 29, 1988

Magnetic recording medium

FUJI PHOTO FILM CO LTD19 citations74

US4716077ADec 29, 1987

Magnetic recording medium

FUJI PHOTO FILM CO LTD17 citations74

US4707380ANov 17, 1987

Process for preparing a magnetic recording medium

FUJI PHOTO FILM CO LTD13 citations74

US4690870ASep 1, 1987

Magnetic recording medium

FUJI PHOTO FILM CO LTD7 citations74

US4686149AAug 11, 1987

Magnetic recording medium and method of preparing

FUJI PHOTO FILM CO LTD7 citations74

US4664964AMay 12, 1987

Magnetic recording medium

FUJI PHOTO FILM CO LTD17 citations74

US4619855AOct 28, 1986

Magnetic recording medium with electron beam cured magnetic layer

FUJI PHOTO FILM CO LTD7 citations74

US4581270AApr 8, 1986

Flexible magnetic disk

FUJI PHOTO FILM CO LTD17 citations74

US4576866AMar 18, 1986

Magnetic recording material

FUJI PHOTO FILM CO LTD11 citations74

US4533565AAug 6, 1985

Method for surface treatment of ferromagnetic fine powder and forming a magnetic recording device

FUJI PHOTO FILM CO LTD16 citations74

US4520070AMay 28, 1985

Magnetic recording medium and process for producing same

FUJI PHOTO FILM CO LTD8 citations74

US4482578ANov 13, 1984

Method for preparing magnetic recording media

FUJI PHOTO FILM CO LTD7 citations74

US4482610ANov 13, 1984

Magnetic recording medium and process for producing the same

FUJI PHOTO FILM CO LTD7 citations74

US4481231ANov 6, 1984

Method for production of magnetic recording media

FUJI PHOTO FILM CO LTD12 citations74

US5061564AOct 29, 1991

Magnetic recording medium comprising a polar group containing resin or compound and a methyl iso ester lubricant prepared from a methyl iso acid or methyl iso alcohol or both

FUJI PHOTO FILM CO LTD8 citations73

US5049448ASep 17, 1991

Magnetic recording medium containing an ester lubricant branched from the number 2 carbon position of the acid residue

FUJI PHOTO FILM CO LTD7 citations73

Showing the top 50 of 93 patents by PatentIndex Score.

OKITA TSUTOMU

Patents

Magnetic recording medium containing a binder which is chemically bonded to crosslinked resin fine particles contained in the magnetic layer

Antistatic plastic films

Magnetic recording medium having a magnetic layer containing ferromagnetic powder and a polyurethane resin obtained from a polyolefin polyol or a polybutadiene polyol

Magnetic recording medium and process for producing the same

Magnetic recording medium

Magnetic recording medium

Magnetic recording medium

Process for producing magnetic recording material

Magnetic recording medium

Flexible magnetic disk sheet

Magnetic recording medium having binder cured by electron beam radiation

Magnetic recording medium and process for producing the same

Process for producing a magnetic recording medium

Radiation-setting composition containing (meth)acrylic copolymers containing acid groups

Magnetic recording medium

Magnetic recording medium comprising ferromagnetic powder and a specified polyurethane resin

Magnetic recording medium

Magnetic recording medium having a carbon protective layer and a fluoro-lubricant supplied from a backcoat layer

Magnetic recording medium

Magnetic recording medium comprising a magnetic layer and a sub layer containing an unsaturated alkyl carbonic ester

Magnetic recording medium having ferromagnetic powder, a binder containing a specified vinyl chloride copolymer, polar group containing polyurethane resin and a fatty acid amide

Magnetic recording medium having a vinyl-chloride resin and a urethane resin binder system each of which resins contain three percent or less of a low molecular weight resin fraction

Magnetic recording medium having a surface with pores of specified average inlet diameter and wide pore size distribution controlled by calender treatment

Magnetic recording medium having a backcoat layer comprising non-magnetic particles dispersed in a vinyl copolymer containing a dialkylaminoalkyl group

Magnetic recording medium lubricated by a three component fatty acid ester-fatty acid amide composition

Magnetic recording medium comprising a polyurethane resin having a thio, thiocarboxy or dithiocarboxy group; a vinyl chloride resin containing a polar group and a hyroxy group; and a polyisocyanate compound

Magnetic recording medium containing magnetic particles surface treated with a glycidyl compound

Magnetic recording medium

Adhesive for a base-mounted flexible magnetic disc

Method for manufacturing a magnetic recording medium

Magnetic recording medium

Metallic thin film type magnetic recording medium

Method of making substrate for magnetic recording medium

Recording sheet bonded to a substrate in a magnetic disk

Magnetic recording medium

Magnetic recording medium

Process for preparing a magnetic recording medium

Magnetic recording medium

Magnetic recording medium and method of preparing

Magnetic recording medium

Magnetic recording medium with electron beam cured magnetic layer

Flexible magnetic disk

Magnetic recording material

Method for surface treatment of ferromagnetic fine powder and forming a magnetic recording device

Magnetic recording medium and process for producing same

Method for preparing magnetic recording media

Magnetic recording medium and process for producing the same

Method for production of magnetic recording media

Magnetic recording medium comprising a polar group containing resin or compound and a methyl iso ester lubricant prepared from a methyl iso acid or methyl iso alcohol or both

Magnetic recording medium containing an ester lubricant branched from the number 2 carbon position of the acid residue