P

Inventor

AONUMA MASASHI

JP57 patents
⚠️ This page may combine multiple inventors who share the name “AONUMA MASASHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

FUJI PHOTO FILM CO LTD

43 patents
US4020236AApr 26, 1977

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

FUJI PHOTO FILM CO LTD51 citations96
US6762429B2Jul 13, 2004

Image and information processor

FUJI PHOTO FILM CO LTD25 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
US6906814B1Jun 14, 2005

Interfacing method for network printers

FUJI PHOTO FILM CO LTD16 citations84
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
US4431712AFeb 14, 1984

Magnetic recording medium of ferromagnetic particles and binder

FUJI PHOTO FILM CO LTD21 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
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
US5091268AFeb 25, 1992

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

FUJI PHOTO FILM CO LTD12 citations74
US4959263ASep 25, 1990

Magnetic recording medium

FUJI PHOTO FILM CO LTD10 citations74
US4716077ADec 29, 1987

Magnetic recording medium

FUJI PHOTO FILM CO LTD17 citations74
US4686149AAug 11, 1987

Magnetic recording medium and method of preparing

FUJI PHOTO FILM CO LTD7 citations74
US4604296AAug 5, 1986

Process for production of magnetic recording elements

FUJI PHOTO FILM CO LTD7 citations74
US4437882AMar 20, 1984

Ferromagnetic powder treated with an organic silane compound

FUJI PHOTO FILM CO LTD15 citations74
US4308311ADec 29, 1981

Magnetic recording material

FUJI PHOTO FILM CO LTD19 citations74
US4217152AAug 12, 1980

Process for production of ferromagnetic powder

FUJI PHOTO FILM CO LTD15 citations74
US4059463ANov 22, 1977

Process for producing ferromagnetic powder

FUJI PHOTO FILM CO LTD13 citations74
US4007072AFeb 8, 1977

Ferromagnetic metal powder comprising lead and method for making the same

FUJI PHOTO FILM CO LTD8 citations74
US5795645AAug 18, 1998

Magnetic recording medium

FUJI PHOTO FILM CO LTD9 citations73
US4663209AMay 5, 1987

Magnetic recording medium

FUJI PHOTO FILM CO LTD8 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
US4101311AJul 18, 1978

Process for producing ferromagnetic metal powder

FUJI PHOTO FILM CO LTD18 citations73
US6149989ANov 21, 2000

Magnetic recording particulate medium

FUJI PHOTO FILM CO LTD8 citations72
US4009111AFeb 22, 1977

Magnetic recording medium

FUJI PHOTO FILM CO LTD13 citations72
US3943012AMar 9, 1976

Magnetic recording medium

FUJI PHOTO FILM CO LTD10 citations72
US4976989ADec 11, 1990

Method for preparing a magnetic recording medium

FUJI PHOTO FILM CO LTD10 citations70
US7170621B2Jan 30, 2007

Automatic image data transfer system

FUJI PHOTO FILM CO LTD2 citations63
US6939575B2Sep 6, 2005

Ferromagnetic metal powder, producing method of the same, and magnetic recording medium

FUJI PHOTO FILM CO LTD5 citations63
US5233555AAug 3, 1993

Method of erasing residual radiation information on stimulable phosphor sheet

FUJI PHOTO FILM CO LTD5 citations63
US4812351AMar 14, 1989

Magnetic recording medium

FUJI PHOTO FILM CO LTD6 citations63
US4671998AJun 9, 1987

Magnetic recording medium

FUJI PHOTO FILM CO LTD4 citations63
US4617234AOct 14, 1986

Magnetic recording medium

FUJI PHOTO FILM CO LTD3 citations63
US4309471AJan 5, 1982

Magnetic audio-recording tape

FUJI PHOTO FILM CO LTD6 citations63
US4086374AApr 25, 1978

Production of magnetic recording material

FUJI PHOTO FILM CO LTD5 citations63

SEIKO EPSON CORP

7 patents

Showing the top 50 of 57 patents by PatentIndex Score.