Inventor

TAMAI YASUO

JP78 patents

⚠️ This page may combine multiple inventors who share the name “TAMAI YASUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

FUJI PHOTO FILM CO LTD

48 patents

US4963433AOct 16, 1990

Magnetic recording medium

FUJI PHOTO FILM CO LTD72 citations96

US4020236AApr 26, 1977

Process for producing a magnetic material and magnetic recording medium containing the same

FUJI PHOTO FILM CO LTD51 citations96

US4857388AAug 15, 1989

Magnetic recording medium

FUJI PHOTO FILM CO LTD34 citations93

US4847147AJul 11, 1989

Magnetic recording medium

FUJI PHOTO FILM CO LTD32 citations93

US4253886AMar 3, 1981

Corrosion resistant ferromagnetic metal powders and method of preparing the same

FUJI PHOTO FILM CO LTD51 citations93

US4246316AJan 20, 1981

Magnetic recording medium

FUJI PHOTO FILM CO LTD29 citations93

US4096316AJun 20, 1978

Method of producing magnetic material with alkaline borohydrides

FUJI PHOTO FILM CO LTD35 citations93

US4063000ADec 13, 1977

Process for production of ferromagnetic powder

FUJI PHOTO FILM CO LTD49 citations93

US4135016AJan 16, 1979

Magnetic recording material

FUJI PHOTO FILM CO LTD34 citations92

US4076861AFeb 28, 1978

Magnetic recording substance

FUJI PHOTO FILM CO LTD38 citations92

US4197347AApr 8, 1980

High density magnetic recording media

FUJI PHOTO FILM CO LTD28 citations82

US4141763AFeb 27, 1979

Process for production of ferromagnetic powder and apparatus therefor

FUJI PHOTO FILM CO LTD21 citations82

US4069073AJan 17, 1978

Process for the production of a ferromagnetic metal powder

FUJI PHOTO FILM CO LTD27 citations82

US3966510AJun 29, 1976

Ferromagnetic powder for magnetic recording medium and method for preparation thereof

FUJI PHOTO FILM CO LTD28 citations82

US4820581AApr 11, 1989

Magnetic recording medium

FUJI PHOTO FILM CO LTD15 citations74

US4780353AOct 25, 1988

Magnetic recording medium

FUJI PHOTO FILM CO LTD8 citations74

US4743487AMay 10, 1988

Magnetic recording medium

FUJI PHOTO FILM CO LTD12 citations74

US4710421ADec 1, 1987

Magnetic recording medium

FUJI PHOTO FILM CO LTD15 citations74

US4690857ASep 1, 1987

Magnetic recording medium

FUJI PHOTO FILM CO LTD14 citations74

US4604296AAug 5, 1986

Process for production of magnetic recording elements

FUJI PHOTO FILM CO LTD7 citations74

US4500599AFeb 19, 1985

Magnetic recording medium

FUJI PHOTO FILM CO LTD7 citations74

US4492734AJan 8, 1985

Magnetic recording medium

FUJI PHOTO FILM CO LTD7 citations74

US4446205AMay 1, 1984

Magnetic recording tape having a leader tape

FUJI PHOTO FILM CO LTD15 citations74

US4420540ADec 13, 1983

Magnetic recording medium

FUJI PHOTO FILM CO LTD13 citations74

US4410565AOct 18, 1983

Method of making a magnetic recording medium

FUJI PHOTO FILM CO LTD10 citations74

US4354908AOct 19, 1982

Process for the production of magnetic recording members

FUJI PHOTO FILM CO LTD7 citations74

US4308311ADec 29, 1981

Magnetic recording material

FUJI PHOTO FILM CO LTD19 citations74

US4265931AMay 5, 1981

Process for the production of a magnetic recording member

FUJI PHOTO FILM CO LTD17 citations74

US4217152AAug 12, 1980

Process for production of ferromagnetic powder

FUJI PHOTO FILM CO LTD15 citations74

US4201809AMay 6, 1980

Magnetic recording medium

FUJI PHOTO FILM CO LTD13 citations74

US4019993AApr 26, 1977

Manufacturing process for liquid developer

FUJI PHOTO FILM CO LTD7 citations74

US4007072AFeb 8, 1977

Ferromagnetic metal powder comprising lead and method for making the same

FUJI PHOTO FILM CO LTD8 citations74

US3954467AMay 4, 1976

Electrophotographic photosensitive material

FUJI PHOTO FILM CO LTD8 citations74

US4320159AMar 16, 1982

Magnetic recording medium

FUJI PHOTO FILM CO LTD16 citations73

US4186228AJan 29, 1980

Magnetic recording medium

FUJI PHOTO FILM CO LTD6 citations73

US4164604AAug 14, 1979

Leader or trailer tape for a magnetic recording medium

FUJI PHOTO FILM CO LTD7 citations73

US4154895AMay 15, 1979

Magnetic recording member

FUJI PHOTO FILM CO LTD12 citations73

US4110503AAug 29, 1978

Magnetic recording members

FUJI PHOTO FILM CO LTD15 citations73

US4108787AAug 22, 1978

Process for producing ferromagnetic iron oxide

FUJI PHOTO FILM CO LTD19 citations73

US4101311AJul 18, 1978

Process for producing ferromagnetic metal powder

FUJI PHOTO FILM CO LTD18 citations73

US4071654AJan 31, 1978

Magnetic recording member

FUJI PHOTO FILM CO LTD12 citations73

US4016057AApr 5, 1977

Process of producing ferromagnetic materials

FUJI PHOTO FILM CO LTD12 citations73

US4009111AFeb 22, 1977

Magnetic recording medium

FUJI PHOTO FILM CO LTD13 citations72

US3943012AMar 9, 1976

Magnetic recording medium

FUJI PHOTO FILM CO LTD10 citations72

US4135218AJan 16, 1979

Magnetic recording and reproducing apparatus

FUJI PHOTO FILM CO LTD8 citations71

US4033890AJul 5, 1977

Liquid developer for electrophotography

FUJI PHOTO FILM CO LTD9 citations71

US4680225AJul 14, 1987

Magnetic tape having a leader tape

FUJI PHOTO FILM CO LTD10 citations70

US4511484AApr 16, 1985

Process for preparing magnetic coating composition

FUJI PHOTO FILM CO LTD10 citations70

NAT SPACE DEV AGENCY

1 patent

US5430451AJul 4, 1995

Array antenna mounted on spacecrafts

NAT SPACE DEV AGENCY33 citations89

RANK XEROX LTD

1 patent

US3968044AJul 6, 1976

Milled liquid developer

RANK XEROX LTD18 citations82

Showing the top 50 of 78 patents by PatentIndex Score.