P

Inventor

KOYAMA NOBORU

JP43 patents
⚠️ This page may combine multiple inventors who share the name “KOYAMA NOBORU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

KONISHIROKU PHOTO IND

20 patents
US5242752ASep 7, 1993

Magnetic recording medium comprising a specified binder resin, specified ferromagnetic metal powder and α-alumina

KONISHIROKU PHOTO IND113 citations97
US5324571AJun 28, 1994

Magnetic recording medium comprising a support and a plurality of layers in which the magnetic layer has a specified plastic deformation

KONISHIROKU PHOTO IND21 citations92
US5151323ASep 29, 1992

Magnetic recording medium and manufacturing method thereof

KONISHIROKU PHOTO IND29 citations92
US5093192AMar 3, 1992

Magnetic recording medium

KONISHIROKU PHOTO IND23 citations92
US5051291ASep 24, 1991

Magnetic recording medium

KONISHIROKU PHOTO IND38 citations92
US4818606AApr 4, 1989

Highly running-endurant magnetic recording medium

KONISHIROKU PHOTO IND38 citations90
US5512363AApr 30, 1996

Magnetic recording medium having a magnetic layer containing magnetic powder and an underlayer containing two kinds of non magnetic powder

KONISHIROKU PHOTO IND10 citations74
US5336559AAug 9, 1994

Magnetic recording medium

KONISHIROKU PHOTO IND14 citations74
US5097792AMar 24, 1992

Coating apparatus

KONISHIROKU PHOTO IND19 citations73
US5035856AJul 30, 1991

Magnetic recording medium

KONISHIROKU PHOTO IND12 citations73
US5026598AJun 25, 1991

Magnetic recording medium

KONISHIROKU PHOTO IND15 citations73
US4992330AFeb 12, 1991

Magnetic recording medium

KONISHIROKU PHOTO IND12 citations73
US5098785AMar 24, 1992

Magnetic recording medium containing a copolymer having an anionic functional group which forms an intermolecular salt

KONISHIROKU PHOTO IND7 citations72
US5326635AJul 5, 1994

Magnetic recording medium having a non-magnetic underlayer containing electrically conductive tin oxide coated pigment

KONISHIROKU PHOTO IND6 citations63
US5093193AMar 3, 1992

Magnetic recording medium and method of making it

KONISHIROKU PHOTO IND5 citations63
US5077131ADec 31, 1991

Magnetic recording medium

KONISHIROKU PHOTO IND6 citations63
US5215803AJun 1, 1993

Magnetic recording medium

KONISHIROKU PHOTO IND3 citations61
US5116683AMay 26, 1992

Magnetic recording medium containing a specified ferromagnetic powder, polyurethane resin prepared from specified branched chain diols and a fatty acid ester

KONISHIROKU PHOTO IND4 citations61
US5089333AFeb 18, 1992

Magnetic recording medium

KONISHIROKU PHOTO IND1 citations52
US5284716AFeb 8, 1994

Magnetic recording medium

KONISHIROKU PHOTO IND1 citations51

SONY CORP

14 patents

KONICA MINOLTA INC

3 patents

KOYAMA NOBORU

2 patents

MURATA KAZUYOSHI

1 patent

KARIYA IZUMI

1 patent

SEIKO EPSON CORP

1 patent

HITOSE SHINGO

1 patent