Patents by Inventor Hitoshi Noguchi

Hitoshi Noguchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for producing substrate for single crystal diamond growth
    Publication number: 20070209578
    Abstract: There is disclosed a method for producing a substrate for single crystal diamond growth, comprising at least a step of preliminarily subjecting a substrate before single crystal diamond growth to a bias treatment for forming a diamond nucleus thereon by a direct-current discharge in which an electrode in a substrate side is a cathode, and wherein in the treatment, at least, a temperature of the substrate from 40 sec after an initiation of the bias treatment to an end of the bias treatment is held in a range of 800° C.±60° C. There can be provided a method for producing a substrate for single crystal diamond growth, by which a single crystal diamond can be grown more certainly.
    Type: Application
    Filed: March 2, 2007
    Publication date: September 13, 2007
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventor: Hitoshi Noguchi
  • Surface acoustic wave device
    Patent number: 7122938
    Abstract: There is disclosed a surface acoustic wave device having at least a diamond film, a piezoelectric-material film, and an electrode on a base material wherein all or some part of the diamond film consists of an electroconductive diamond in which a dopant is doped. Thereby, there can be provided a surface acoustic wave device wherein breakage of the substrate due to generation of static electricity can be prevented in a device manufacturing process so that the device manufacture yield can be increased, and electrification can be prevented at the time of real use so that high performance can be maintained for a long time, even if it is a surface acoustic wave device using diamond.
    Type: Grant
    Filed: May 3, 2004
    Date of Patent: October 17, 2006
    Assignee: Shin-Etsu Chemical Co., LTD
    Inventors: Hitoshi Noguchi, Yoshihiro Kubota
  • Magnetic disc medium
    Patent number: 7108903
    Abstract: A magnetic disc medium comprising: a magnetic sheet in the form of a disk; a case encasing the magnetic sheet so as to be capable of rotating; and a nonwoven liner fastened on an inner face of the case so as to face the magnetic sheet, wherein the magnetic sheet comprises a support, a substantially nonmagnetic lower layer, and a magnetic layer containing hexagonal ferrite powder dispersed in a binder and having central plane average surface roughness of from 1 nm to 4 nm, and the liner comprises polyethylene terephthalate in an amount of 20% by weight or more.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: September 19, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shinji Saito, Hitoshi Noguchi, Hideaki Shiga
  • Multilayer substrate, method for producing a multilayer substrate, and device
    Publication number: 20060203346
    Abstract: There is provided a multilayer substrate comprising, at least, a single crystal MgO substrate, an iridium (Ir) film heteroepitaxially grown on the MgO substrate, a diamond film vapor-deposited on the Ir film, wherein crystallinity of the Ir film is that a full width at half maximum (FWHM) of a diffracted intensity peak in 2 ?=46.5° or 2?=47.3° attributed to Ir (200) analyzed by X-ray diffraction method with a wavelength of ?=1.54 ? is 0.40° or less. Thereby, there is provided a multilayer substrate that is delamination-proof at the respective interfaces between the MgO substrate and the Ir film and between the Ir film and the diamond film, and, particularly, that has a single crystal diamond film of a large area as a continuous film.
    Type: Application
    Filed: March 7, 2006
    Publication date: September 14, 2006
    Applicants: SHIN-ETSU CHEMICAL CO., LTD., ATSUHITO SAWABE
    Inventors: Hitoshi Noguchi, Atsuhito Sawabe
  • Magnetic recording and reproduction method
    Patent number: 7092210
    Abstract: A magnetic recording and reproduction method comprising recording or reproducing a track of a rotating magnetic disk by means of a magnetic head, wherein the magnetic disk comprises a support and a magnetic layer containing ferromagnetic powder and a binder; the track has a breadth of 2 ?m or less; and a frictional force between the magnetic layer and the magnetic head at innermost peripheral area of a recording region of the magnetic disk is 30 mN or less, a frictional force between the magnetic layer and a magnetic head at outermost peripheral area of a recording region of the magnetic disk is 20 mN or less, and a ratio of the frictional force at the innermost peripheral area to the frictional force at the outermost peripheral area is from 1.0 to 4.0.
    Type: Grant
    Filed: July 14, 2004
    Date of Patent: August 15, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hitoshi Noguchi, Ayako Matsumoto, Shinji Saito
  • Diamond film and method for producing the same
    Patent number: 7070650
    Abstract: There is disclosed a method for producing a diamond film on a base material by a vapor phase reaction at least with introducing a raw material gas, wherein B(OCH3)3 gas is added to the raw material gas as a source of boron to be doped, and a diamond film is deposited on the base material by a vapor phase reaction utilizing the mixed raw material gas. There can be provided a method enabling easy and uniform production of a diamond film showing a low electric resistivity value with good reproducibility and few problems concerning handling such as serious bad influence on human bodies and explosiveness during the doping process.
    Type: Grant
    Filed: April 23, 2003
    Date of Patent: July 4, 2006
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Hitoshi Noguchi, Yoshihiro Kubota
  • Magnetic disk cartridge
    Publication number: 20060098342
    Abstract: A magnetic disk cartridge, which holds therein a magnetic disk with recording density and has a liner composed of polyethylene terephthalate fibers, is provided which achieves a good dust-removal effect by the liner without flawing the magnetic disk and without increasing the rotary torque of the magnetic disk. A magnetic layer of the magnetic disk is formed such that the magnetic layer contains diamond particles which have an average particle size satisfying a relationship “b?0.05?a?b+0.1” at 1% to 10% by weight with respect to the ferromagnetic material, where “a” represents the average particle size of the diamond particles in units of ?m and “b” represents a thickness of the magnetic layer in units of ?m. The fibers of the liner are selected from the fibers whose fiber diameter varies in its length direction.
    Type: Application
    Filed: September 9, 2005
    Publication date: May 11, 2006
    Inventors: Ayako Matsumoto, Shinji Saito, Hitoshi Noguchi
  • Magnetic recording medium
    Publication number: 20060024533
    Abstract: Provided is a magnetic recording medium exhibiting good electromagnetic characteristics in high-density recording The magnetic recording medium employed for magnetically recording signals with a track width equal to or less than 2.0 ?m and reproducing the magnetically recorded signals, wherein said magnetic recording medium comprises a magnetic layer comprising a hexagonal ferrite ferromagnetic powder and a binder or comprises a nonmagnetic layer comprise a nonmagnetic powder and a binder and a magnetic layer comprising a hexagonal ferrite ferromagnetic powder and a binder in this order on a nonmagnetic support. Said magnetic layer has a thickness equal to or less than 0.2 ?m, and said hexagonal ferrite ferromagnetic powder has an average plate diameter being 1/30 or less of the magnetically recorded track width as well as ½ or less of the thickness of the magnetic layer.
    Type: Application
    Filed: September 29, 2005
    Publication date: February 2, 2006
    Inventors: Shinji Saito, Hitoshi Noguchi, Nobuo Yamazaki
  • Optical disc
    Publication number: 20050287331
    Abstract: The present invention was made to improve the strength, such as heat resistance, of a disc comprising a biodegradable resin. The optical disc according to the present invention is formed by bonding two substrates, at least one of the substrates having an information recording area. One substrate disposed on a light incident side of the optical disc is composed of a biodegradable resin that is uncrystallized and allows light to transmit therethrough. Another substrate disposed away from the light incident side of the optical disc is composed of the biodegradable resin having higher crystallinity than that of the substrate disposed on a light incident side of the optical disc.
    Type: Application
    Filed: May 31, 2005
    Publication date: December 29, 2005
    Applicants: SANYO MARVIC MEDIA CO.,LTD, SANYO ELECTRIC CO., LTD.
    Inventors: Hitoshi Noguchi, Masahiro Higuchi, Yoshiaki Maeno
  • Stencil mask for ion implantation
    Patent number: 6979520
    Abstract: There is disclosed a stencil mask for ion implantation used in an ion implantation process of semiconductor device fabrication comprising at least a base material portion and a stencil portion, wherein the stencil portion has a diamond layer. Thereby, there can be provided a stencil mask for ion implantation used in an ion implantation process of semiconductor device fabrication, which has high resistance to ion irradiation, and which can stably perform ion implantation of high precision and high purity for long time.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: December 27, 2005
    Assignee: Shin Etsu Chemical Co., Ltd.
    Inventor: Hitoshi Noguchi
  • Base material for forming diamond film and diamond film
    Publication number: 20050277224
    Abstract: There is disclosed a base material for forming a diamond film by vapor phase synthesis, wherein diamond particles having a particle diameter of 2 nm to 100 nm exist at a density of 1 ×108 to 1 ×1013 number/cm2 on a surface of the base material, and spaces among the diamond particles are filled with diamond particles having a particle diameter of less than 2 nm. There can be provided a base material for forming a diamond film by vapor phase synthesis which can provide a high generation density of diamond nuclei and a continuous diamond film even with an extremely small film thickness such as 10 ?m or less.
    Type: Application
    Filed: June 30, 2005
    Publication date: December 15, 2005
    Inventor: Hitoshi Noguchi
  • Recording/reproducing method of magnetic disc
    Publication number: 20050174674
    Abstract: A method comprising recording or reproducing a magnetic disc with a recording head or a reproducing head, the magnetic disc having a diameter of from 1.91 to 3.81 cm and comprising, in this order, a flexible support, a substantially nonmagnetic lower layer and a magnetic layer containing hexagonal ferrite magnetic powder and a binder, wherein relative speeds in all recording area of the magnetic disc are within a range of from 1.0 to 8.0 m/s when the recording or reproducing is conducted.
    Type: Application
    Filed: February 7, 2005
    Publication date: August 11, 2005
    Inventors: Shinji Saito, Hitoshi Noguchi
  • Magnetic disk medium
    Patent number: 6893701
    Abstract: A magnetic disk medium having on a support a magnetic layer containing hexagonal ferrite powder dispersed in a binder, with the support having a thickness of 20 ?m to 80 ?m and the magnetic disk medium having an inside diameter X of 2 mm to 10 mm, an outside diameter Y of 20 mm to 50 mm, an X/Y ratio satisfying the relation 0.05?X/Y?0.20 and a curl quantity of 1 mm or below, which is suitable for use in small-diameter portable computer equipment and video recorders, and besides, can attain a recording capacity of at least several hundred megabytes.
    Type: Grant
    Filed: November 14, 2003
    Date of Patent: May 17, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hitoshi Noguchi, Shinji Saito
  • Method of producing diamond film and diamond film produced thereby
    Patent number: 6875708
    Abstract: There is disclosed a method of producing a diamond film formed on a substrate, wherein at least after a film (dopant layer) containing doping elements is formed on a surface of the substrate, a vapor phase synthetic diamond film is formed on the dopant layer, and the dopant layer contains diamond particles, which become sources of diamond nuclei, in addition to doping elements, and also disclosed a diamond film produced by the method. There can be provided a method of producing a diamond film that a diamond film having lowered electric resistance can be produced, and also provided a diamond film produced by the method.
    Type: Grant
    Filed: May 6, 2002
    Date of Patent: April 5, 2005
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventor: Hitoshi Noguchi
  • Recording medium and recording/reproducing apparatus
    Publication number: 20050064131
    Abstract: The present invention provides smooth and adequate recording/reproducing on a recording medium employing a biodegradable material as a substrate material. The present invention relates to storing on a recording medium, information, structure, or the like indicating that a substrate is formed of a biodegradable material. When the present invention is applied to CD, CD-R, and CD-RW, identification information indicating a substrate formed of a biodegradable material is included in a free area of TOC data in a lead-in area shown in FIG. 4. An optical disc apparatus reads the identification information to identify whether or not a disc loaded into the apparatus has a substrate of a biodegradable material.
    Type: Application
    Filed: September 17, 2004
    Publication date: March 24, 2005
    Inventors: Atsushi Yamaguchi, Hitoshi Noguchi, Shinji Kobayashi, Yoshihisa Suzuki, Morio Nakatani, Masahiro Higuchi, Yoshiaki Maeno
  • Polishing plate
    Patent number: 6860803
    Abstract: There is disclosed a polishing plate for polishing a workpiece by rubbing the workpiece to be processed with the polishing plate, comprising at least a substrate and a polishing material, the polishing material being a vapor phase synthetic polycrystalline diamond film deposited on a surface of the substrate to rub the workpiece to be processed. The present invention provides a polishing plate of which production cost is low and which can effectively polish a surface of a workpiece to be processed comprising a very hard material such as DLC, SiC, SiN, Si or the like and extremely smooth the surface.
    Type: Grant
    Filed: October 11, 2002
    Date of Patent: March 1, 2005
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventor: Hitoshi Noguchi
  • Magnetic recording medium
    Patent number: 6855394
    Abstract: A magnetic recording medium is disclosed, comprising a support having provided thereon a substantially nonmagnetic lower layer by coating a lower layer coating solution comprising a nonmagnetic powder dispersed in a binder and drying, and a layer having a thickness of from 0.01 to 0.15 ?m by coating a magnetic layer coating solution comprising a ferromagnetic metal powder or a hexagonal ferrite powder dispersed in a binder, wherein the magnetic layer contains diamond particles having an average particle size of from 1/5 to 2 times the thickness of the magnetic layer in an amount of from 0.1 to 5.0 mass % based on the ferromagnetic metal powder.
    Type: Grant
    Filed: June 25, 2002
    Date of Patent: February 15, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hitoshi Noguchi, Nobuo Yamazaki, Shinji Saito
  • Method for producing diamond film
    Publication number: 20050016445
    Abstract: The present invention is a method for producing a diamond film on a base material by a vapor phase reaction at least with introducing a raw material gas, wherein PO(OCH3)3 gas, P(OCH3)3 gas, or B(OC2H5)3 gas is added to the raw material gas as a source of phosphorus or boron to be doped, and a diamond film doped with phosphorus or boron is deposited on the base material by a vapor phase reaction utilizing the mixed raw material gas. Thereby, there can be provided a method enabling easy, inexpensive and uniform production of a diamond film showing low electric resistivity with good reproducibility and few problems concerning handling such as bad influence on human bodies and explosiveness during the doping process.
    Type: Application
    Filed: July 16, 2004
    Publication date: January 27, 2005
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventor: Hitoshi Noguchi
  • Magnetic recording and reproduction method
    Publication number: 20050013046
    Abstract: A magnetic recording and reproduction method comprising recording or reproducing a track of a rotating magnetic disk by means of a magnetic head, wherein the magnetic disk comprises a support and a magnetic layer containing ferromagnetic powder and a binder; the track has a breadth of 2 ?m or less; and a frictional force between the magnetic layer and the magnetic head at innermost peripheral area of a recording region of the magnetic disk is 30 mN or less, a frictional force between the magnetic layer and a magnetic head at outermost peripheral area of a recording region of the magnetic disk is 20 mN or less, and a ratio of the frictional force at the innermost peripheral area to the frictional force at the outermost peripheral area is from 1.0 to 4.0.
    Type: Application
    Filed: July 14, 2004
    Publication date: January 20, 2005
    Inventors: Hitoshi Noguchi, Ayako Matsumoto, Shinji Saito
  • Surface acoustic wave device
    Publication number: 20050001512
    Abstract: There is disclosed a surface acoustic wave device having at least a diamond film, a piezoelectric-material film, and an electrode on a base material wherein all or some part of the diamond film consists of an electroconductive diamond in which a dopant is doped. Thereby, there can be provided a surface acoustic wave device wherein breakage of the substrate due to generation of static electricity can be prevented in a device manufacturing process so that the device manufacture yield can be increased, and electrification can be prevented at the time of real use so that high performance can be maintained for a long time, even if it is a surface acoustic wave device using diamond.
    Type: Application
    Filed: May 3, 2004
    Publication date: January 6, 2005
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Hitoshi Noguchi, Yoshihiro Kubota