Inventor

KITAMOTO TATSUJI

JP76 patents

Patents

50 patents

US4200680AApr 29, 1980

Process for preparing magnetic iron oxide and magnetic iron oxide produced thereby

FUJI PHOTO FILM CO LTD56 citations96

US5344730ASep 6, 1994

Recording member comprising a substrate with a magnetic lager on one surface and a lubricating lager on the opposed surface

FUJI PHOTO FILM CO LTD44 citations93

US4486496ADec 4, 1984

Magnetic recording medium

FUJI PHOTO FILM CO LTD34 citations92

US4442159AApr 10, 1984

Magnetic recording medium

FUJI PHOTO FILM CO LTD46 citations92

US4251843AFeb 17, 1981

Disc jacket for retaining magnetic recording disc

FUJI PHOTO FILM CO LTD33 citations92

US4106067AAug 8, 1978

Magnetic head cleaning jacket

FUJI PHOTO FILM CO LTD35 citations92

US4588656AMay 13, 1986

Method of preparing a magnetic recording medium

FUJI PHOTO FILM CO LTD25 citations82

US4547393AOct 15, 1985

Method for preparing a magnetic recording medium

FUJI PHOTO FILM CO LTD20 citations82

US4475946AOct 9, 1984

Ferromagnetic metal particles of iron alloyed with Ti, V, Cr, Mn, Co, Ni, Cu, Zn, Si, P, Mo, Sn, Sb and Ag coated with mono- or dialkoxysilanes

FUJI PHOTO FILM CO LTD25 citations82

US4333985AJun 8, 1982

Magnetic recording medium

FUJI PHOTO FILM CO LTD28 citations82

US4183976AJan 15, 1980

Process of producing a magnetic recording element

FUJI PHOTO FILM CO LTD21 citations82

US4141763AFeb 27, 1979

Process for production of ferromagnetic powder and apparatus therefor

FUJI PHOTO FILM CO LTD21 citations82

US4128691ADec 5, 1978

Process for the production of a magnetic recording medium

FUJI PHOTO FILM CO LTD21 citations82

US4125474ANov 14, 1978

Process for producing ferrogmagnetic iron oxide powder comprising a pre-treatment with a reducing agent

FUJI PHOTO FILM CO LTD23 citations82

US4089993AMay 16, 1978

Method of forming a metallic thin film by electroless plating on a vinylidene chloride undercoat

FUJI PHOTO FILM CO LTD26 citations82

US4087582AMay 2, 1978

Magnetic recording medium

FUJI PHOTO FILM CO LTD30 citations82

US4066564AJan 3, 1978

Process for producing cobalt- and iron-containing ferromagnetic powder by heat-treatment in the presence of an oxidizing agent

FUJI PHOTO FILM CO LTD20 citations82

US4015030AMar 29, 1977

Process for stabilization of ferromagnetic material and magnetic recording member

FUJI PHOTO FILM CO LTD21 citations82

US3987900AOct 26, 1976

Jacket for magnetic disc memory

FUJI PHOTO FILM CO LTD19 citations82

US3973920AAug 10, 1976

Magnetic recording medium

FUJI PHOTO FILM CO LTD26 citations82

US4250225AFeb 10, 1981

Process for the production of a magnetic recording medium

FUJI PHOTO FILM CO LTD26 citations81

US4267207AMay 12, 1981

Process for producing cobalt-containing ferromagnetic iron oxide powder

FUJI PHOTO FILM CO LTD22 citations79

US4700198AOct 13, 1987

Process for recording information by irradiation of, an deposition on, a substrate

FUJI PHOTO FILM CO LTD7 citations74

US4666773AMay 19, 1987

Magnetic recording medium

FUJI PHOTO FILM CO LTD14 citations74

US4610903ASep 9, 1986

Magneto-optical disk memory

FUJI PHOTO FILM CO LTD10 citations74

US4608093AAug 26, 1986

Ferromagnetic particles with stable magnetic characteristics and method of preparing same

FUJI PHOTO FILM CO LTD7 citations74

US4554089ANov 19, 1985

Ferromagnetic particles with stable magnetic characteristics and method of preparing same

FUJI PHOTO FILM CO LTD7 citations74

US4520069AMay 28, 1985

Magnetic recording medium

FUJI PHOTO FILM CO LTD10 citations74

US4513054AApr 23, 1985

Magnetic recording medium

FUJI PHOTO FILM CO LTD10 citations74

US4487627ADec 11, 1984

Method for preparing ferromagnetic metal particles

FUJI PHOTO FILM CO LTD13 citations74

US4482578ANov 13, 1984

Method for preparing magnetic recording media

FUJI PHOTO FILM CO LTD7 citations74

US4477489AOct 16, 1984

Method of making magnetic recording medium

FUJI PHOTO FILM CO LTD14 citations74

US4448843AMay 15, 1984

Magnetic recording medium

FUJI PHOTO FILM CO LTD9 citations74

US4439796AMar 27, 1984

Magnetic recording medium

FUJI PHOTO FILM CO LTD10 citations74

US4437882AMar 20, 1984

Ferromagnetic powder treated with an organic silane compound

FUJI PHOTO FILM CO LTD15 citations74

US4414271ANov 8, 1983

Magnetic recording medium and method of preparation thereof

FUJI PHOTO FILM CO LTD17 citations74

US4412507ANov 1, 1983

Magnetic recording medium manufacturing device

FUJI PHOTO FILM CO LTD7 citations74

US4410565AOct 18, 1983

Method of making a magnetic recording medium

FUJI PHOTO FILM CO LTD10 citations74

US4409281AOct 11, 1983

Magnetic recording medium

FUJI PHOTO FILM CO LTD14 citations74

US4354908AOct 19, 1982

Process for the production of magnetic recording members

FUJI PHOTO FILM CO LTD7 citations74

US4333988AJun 8, 1982

Magnetic recording media

FUJI PHOTO FILM CO LTD14 citations74

US4286299AAug 25, 1981

Magnetic head assembly for recording or reproducing vertically magnetized records

FUJI PHOTO FILM CO LTD8 citations74

US4241368ADec 23, 1980

Magnetic sheet recorder with a magnetic sheet surface treating means

FUJI PHOTO FILM CO LTD13 citations74

Showing the top 50 of 76 patents by PatentIndex Score.

KITAMOTO TATSUJI

Patents

Process for preparing magnetic iron oxide and magnetic iron oxide produced thereby

Method of recording information on a photographic film

Magnetic recording medium

Magnetic recording medium

Magnetic recording medium

Process for producing magnetic recording device

Method of producing magnetic recording medium

Magnetic recording medium

Recording member comprising a substrate with a magnetic lager on one surface and a lubricating lager on the opposed surface

Magnetic recording medium

Magnetic recording medium

Disc jacket for retaining magnetic recording disc

Magnetic head cleaning jacket

Method of preparing a magnetic recording medium

Method for preparing a magnetic recording medium

Ferromagnetic metal particles of iron alloyed with Ti, V, Cr, Mn, Co, Ni, Cu, Zn, Si, P, Mo, Sn, Sb and Ag coated with mono- or dialkoxysilanes

Magnetic recording medium

Process of producing a magnetic recording element

Process for production of ferromagnetic powder and apparatus therefor

Process for the production of a magnetic recording medium

Process for producing ferrogmagnetic iron oxide powder comprising a pre-treatment with a reducing agent

Method of forming a metallic thin film by electroless plating on a vinylidene chloride undercoat

Magnetic recording medium

Process for producing cobalt- and iron-containing ferromagnetic powder by heat-treatment in the presence of an oxidizing agent

Process for stabilization of ferromagnetic material and magnetic recording member

Jacket for magnetic disc memory

Magnetic recording medium

Process for the production of a magnetic recording medium

Process for producing cobalt-containing ferromagnetic iron oxide powder

Process for recording information by irradiation of, an deposition on, a substrate

Magnetic recording medium

Magneto-optical disk memory

Ferromagnetic particles with stable magnetic characteristics and method of preparing same

Ferromagnetic particles with stable magnetic characteristics and method of preparing same

Magnetic recording medium

Magnetic recording medium

Method for preparing ferromagnetic metal particles

Method for preparing magnetic recording media

Method of making magnetic recording medium

Magnetic recording medium

Magnetic recording medium

Ferromagnetic powder treated with an organic silane compound

Magnetic recording medium and method of preparation thereof

Magnetic recording medium manufacturing device

Method of making a magnetic recording medium

Magnetic recording medium

Process for the production of magnetic recording members

Magnetic recording media

Magnetic head assembly for recording or reproducing vertically magnetized records

Magnetic sheet recorder with a magnetic sheet surface treating means