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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Asai; Takamitsu
Address:
Kanagawa, JP
No. of patents:
9
Patents:












Patent Number Title Of Patent Date Issued
4740419 Magnetic recording media April 26, 1988
A magnetic recording medium is described which has, on a non-magnetic support, a magnetic layer comprising a ferromagnetic substance dispersed in a binder, wherein the ferromagnetic substance is a hexagonal tabular ferromagnetic substance having an axis of easy magnetization in the d
4726992 Magnetic recording medium February 23, 1988
A magnetic recording medium is described, comprising a non-magnetic support having provided thereon a magnetic layer having magnetic particles being ferromagnetic hexagonal crystallized tabular shape particles having an axis of easy magnetization in a direction vertical to a flat surface
4678706 Magnetic recording medium July 7, 1987
A magnetic recording medium is described, comprising a non-magnetic support, a magnetic recording layer on one side of the support, and a backing layer on the opposite side of the support to the magnetic recording layer, wherein said backing layer comprising a binder and a powder dis
4678682 Process for producing magnetic recording medium July 7, 1987
The perpendicular magnetic orientation of a magnetic layer containing platelet-form ferromagnetic particles coated on a web support is effectively performed by passing a web having thereon the coated magnetic layer in an undried state through a magnetic field formed by plural pairs o
4657814 Magnetic recording medium April 14, 1987
A magnetic recording medium is disclosed. The medium is comprised of a support base having provided thereon a non-magnetic metal layer and a magnetic layer. The magnetic layer is comprised of plate-shaped magnetic particles having an axis of easy magnetization perpendicular to the plane
4657813 Magnetic recording medium April 14, 1987
A magnetic recording medium is described, comprising a non-magnetic support having provided thereon a magnetic layer containing magnetic particles and a binder, wherein the magnetic particles comprise (1) ferromagnetic hexagonal crystallized tabular shape particles having an axis of easy
4656088 Magnetic recording medium April 7, 1987
A magnetic recording medium is disclosed. The medium comprises a non-magnetic support having provided thereon a magnetic layer comprising a binder, a magnetic powder and a powder of an oxide represented by the formula:wherein M-1 is at least one of barium, strontium, lead and calcium; M-
4629653 Magnetic recording medium having laminated hexagonal ferrite platelets December 16, 1986
A magnetic recording medium is described, comprising a non-magnetic support having provided thereon a magnetic layer containing ferromagnetic particles and a binder, wherein said ferromagnetic particles have a tabular ratio (table diameter/table thickness) of 2 or more, a table diame
4552808 Magnetic recording material using plate-shaped ferromagnetic particles November 12, 1985
A magnetic recording material is disclosed which is comprised of a single magnetic layer comprised of plate-shaped ferromagnetic particles wherein the plate-shaped ferromagnetic particles are present in greater number in the surface part of the magnetic layer than in the inner part and/o










 
 
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