Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Nahara; Akira
Address:
Kanagawa, JP
No. of patents:
19
Patents:












Patent Number Title Of Patent Date Issued
5413868 Perpendicular magnetic recording medium comprising a magnetic thin film of cobalt, palladium, ch May 9, 1995
A magnetic recording medium comprising a nonmagnetic substrate having thereon a magnetic layer, wherein the magnetic layer is a metal thin film comprising mainly a composition represented by the formula: (Co.sub.100-x Pd.sub.x).sub.100-y Cr.sub.y or [(Co..sub.100-x Pd.sub.x).sub.100-y
4994321 Perpendicular magnetic recording medium and the method for preparing the same February 19, 1991
A perpendicular magnetic recording medium such as a floppy disk is created by providing on at least one surface of a non-magnetic support, a magnetic layer having perpendicular magnetic anisotropy and a protective layer by sputtering. First, a magnetic layer is provided, secondly, the ma
4869797 Method for preparing a magnetic recording medium September 26, 1989
A method of preparing a magnetic recording medium in which a magnetic layer is deposited on a non-magnetic support and then a carbon protective layer is sputtered onto the magnetic layer. The sputtering is performed with a bias voltage of -10V to -100V being applied in the vicinity of th
4868070 Vertical magnetization type recording medium and manufacturing method therefor September 19, 1989
In a method of manufacturing a vertical magnetization type recording medium, a soft magnetic film layer is formed on each of the two sides of a non-magnetic support, and then a vertical magnetization film layer is formed on each soft magnetic film layer thus formed, thereby to provide a
4867101 Apparatus for producing magnetic recording medium September 19, 1989
Contaminant magnetic dust particles and flakes generated during the thin film coating of a substrate 9 in a vacuum chamber 1 are gravitationally collected in catch pans or troughs 8 disposed below the deposition zones. Magnets 10 are provided under the bottoms of the pans to enhance the
4865878 Method of manufacturing vertical magnetization type recording medium September 12, 1989
In a method of manufacturing a vertical magnetization type recording medium, a soft magnetic film layer is formed on each of the two sides of a non-magnetic support, and then a vertical magnetization film layer is formed on each soft magnetic film layer thus formed, thereby to provide a
4840843 Magnetic recording medium June 20, 1989
A magnetic recording medium is described, comprising a non-magnetic support having provided thereon a thin magnetic metal film and a protective layer mainly comprising carbon having a graphite structure containing at least one element selected from the group consisting of Mn, Mo, Nb, Ta,
4717592 Vertical magnetization type recording medium and manufacturing method therefor January 5, 1988
In forming a vertical magnetization type recording medium, a first soft magnetic film layer is formed on each side of a film-shaped support by vacuum deposition or sputtering at a temperature of 30.degree. C. or lower, a second soft magnetic film layer is formed on each of the first
4639815 Magnetic recording medium with chromiumiron protective layer January 27, 1987
A magnetic recording medium comprising a non-magnetic support, a thin magnetic metal film on the support, and a protective layer on the thin magnetic film, the protective layer containing chromium and iron, the chromium being present in an amount of 6 to 40 wt % and the iron being the
4626315 Process of forming ultrafine pattern December 2, 1986
A process for forming an ultrafine pattern on a surface of a substrate, which includes steps of irradiating the substrate surface with radiation modulated according to information to be patterned, subjecting the substrate surface to deposition with a material reactive or not with the
4609962 Magnetic recording medium having improved weather resistance September 2, 1986
A metal thin film type magnetic recording medium having an improved weather resistance is disclosed, which comprises a non-magnetic support base having provided thereon a ferromagnetic metal thin film comprised of column-shaped clusters of ferromagnetic particle having longitudinal axes
4557944 Process of manufacturing a magnetic recording medium December 10, 1985
A nonbinder type of magnetic recording medium is disclosed. The binder is comprised of a non-magnetic support having thereon, in sequence, a thin magnetic metal film laminated using the evaporation technique and a protecting film, with the thin magnetic metal film converted in its su
4551778 Magnetic recording media and process of producing them November 5, 1985
A magnetic recording medium and a process for producing it is disclosed. The medium is comprised of a non-magnetic flexible support base and a magnetic layer formed on a surface of the support base. The magnetic layer is preferably in the form of a thin, ferromagnetic metal film formed b
4543275 Method of forming thin vapor deposited film of organic material September 24, 1985
A process for forming a vapor-deposited thin layer of organic material is disclosed. The process involves placing organic material on a support base within a vacuum chamber and providing a heat source in the vicinity of the organic material. A second support base is then provided within
4536443 Magnetic recording medium August 20, 1985
A magnetic recording medium comprises a non-magnetic substrate and at least one layer of obliquely deposited magnetic crystals which contains, as a main constituent, Co or a Co--Ni based alloy containing Cr in an amount within the range of 2 to 8 atom % and has a density of 5.0 g/cm.sup.
4521482 Magnetic recording medium June 4, 1985
A magnetic recording medium having a layer of an organic polymer formed on an oblique vapor deposited magnetic metal film is disclosed. A layer of a higher aliphatic acid and/or an ester thereof is also formed on said polymer layer.
4521481 Magnetic recording medium June 4, 1985
A magnetic recording medium comprises a non-magnetic substrate and at least one layer of obliquely deposited magnetic crystals which contains, as a main constituent, a Co-Ni based alloy containing Cr in an amount within the range of 2 to 8 atom % and which is obliquely deposited on the
4511635 Magnetic recording medium April 16, 1985
A magnetic recording medium comprises a non-magnetic high-molecular film and at least one magnetic layer containing Co, Ni, Cr and oxygen and formed on the non-magnetic high-molecular film by an oblique incidence vacuum deposition method. The Cr content is within the range of 2 to 8
4495242 Magnetic recording medium January 22, 1985
A nonbinder type of magnetic recording medium is disclosed. The binder is comprised of a non-magnetic support having thereon, in sequence, a thin magnetic metal film laminated using the evaporation technique and a protecting film, with the thin magnetic metal film converted in its su










 
 
  Recently Added Patents
Pelvic registration device for medical navigation
Field device configuration system
Organic light emitting diode light source device
System and method for ranking content and applications through human assistance
Method for fabricating solar cell
Calcium carbonate granulation
Systems and methods for parameter adaptation
  Randomly Featured Patents
Electric field sensor using liquid crystal and three-dimensional movie player/recorder using the same
Slide deck device for vehicle
Pneumatic booster with reduced load and reduced hysteresis
Gas sensor
Adjustable binding strap for securing a snowboarding boot within a baseplate
Decorative waterfall device
Lamp envelope having a luminescent material on the interior surface thereof, method of applying said material, and material to be applied
Fishing lure-and-line snap swivel
Identification system
Fitting for the underside of a cellular floor