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1. 发明专利

JPH095374A FILM FOR DETECTING HIGH FREQUENCY FIELD 失效
公开(公告)号：JPH095374A
公开(公告)日：1997-01-10
申请号：JP17934295
申请日：1995-06-21
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TAKEI KOJI , SENDA MASAKATSU , ISHII OSAMU
IPC分类号： G01R33/02 , G01R29/08
摘要： PURPOSE: To visualize the strength of high frequency field or the spatial distribution thereof by employing a film obtained by laminating a sheet-like magnetic material and a sheet-like thermally discoloring material. CONSTITUTION: The film for detecting high frequency field is produced by laminating a sheet-like magnetic material and a sheet-like thermally discoloring material. More specifically, a synthetic resin layer 1 containing thermally discoloring material and a magnetic material layer 2 are laminated. The synthetic resin layer 1 comprises a liquid crystal type thermal sheet of 130μm thick having discoloring temperature of 40 deg.C. The material develops yellow color at 40 deg.C or below but the color changes to red at 40 deg.C or above. On the other hand, the magnetic material layer 2 is composed of ferrite powder, nickel foil, permalloy foil, Co based amorphous alloy foil, or multilayer permalloy foil. When it is subjected to a high frequency electromagnetic field, heat corresponding to the high frequency loss of magnetic material is generated to cause temperature rise thereof. Consequently, the color of thermal discoloring material is changed.

2. 发明专利

JPH08222422A MAGNETIC SUBSTANCE AND ITS MANUFACTURE 失效
公开(公告)号：JPH08222422A
公开(公告)日：1996-08-30
申请号：JP4899995
申请日：1995-02-13
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： ISHII OSAMU , TAKEI KOJI , SENDA MASAKATSU
IPC分类号： H01F1/147 , H01F10/32 , H01F41/02
摘要： PURPOSE: To reduce a thickness of a metallic soft magnetic plate material in a lamination structure complex magnetic material of a metallic soft magnetic plate material wherein base metallic oxide is an insulation layer. CONSTITUTION: (a) A material formed by laminating a Permalloy plate and an extra super duralumin foil alternately. (b) It is rolled. (c) It is then heated in pure oxygen and the extra super duralumin layer is oxidized to a metallic oxide. At last, it is heated in a mixture gas atmosphere of nitrogen and hydrogen. In this way, a multilayer structure material as shown in (d) of metallic oxide mainly composed of Permalloy and Al2 O3 can be obtained.

3. 发明专利

JPH0763832A MAGNETIC SENSOR AND METHOD FOR DETECTING MAGNETIC FIELD 失效
公开(公告)号：JPH0763832A
公开(公告)日：1995-03-10
申请号：JP21005293
申请日：1993-08-25
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SENDA MASAKATSU , ISHII OSAMU , KOSHIMOTO YASUHIRO , TOSHIMA TOMOYUKI
IPC分类号： G01R33/02 , G01R33/09 , G11B5/33
摘要： PURPOSE:To provide a magnetic sensor and the method for detecting a magnetic field, which have the high sensitivity, S/N and measuring accuracy and can detect the polarity of the magnetic field with the simple part constitution. CONSTITUTION:At least one magnetic substance 3 is provided directly or through a nonmagnetic insulator on the surface of a conductor 2 having at least a pair of electrodes 1 at both ends, and a magnetic sensor is obtained. At least one magnetic substance 3 is provided directly or through a nonmagnetic insulator on the surface of the conductor 2 having at least a pair of the electrodes 1 at both ends, a high-frequency current is applied into the conductor 2 and an external magnetic field 7 is detected based on the fact that the impedance of the conductor 2 is changed in response to the external magnetic field 7.

4. 发明专利

JPH0548308A IMPEDANCE MATCHING CIRCUIT 失效
公开(公告)号：JPH0548308A
公开(公告)日：1993-02-26
申请号：JP20166891
申请日：1991-08-12
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： ITO KEIICHIRO , ISHII OSAMU
IPC分类号： H01P5/10
摘要： PURPOSE:To realize the small sized impedance matching circuit by realizing the impedance matching and the transmission mode conversion for a broad frequency band when a coaxial transmission line and a balanced element having an optional impedance are connected. CONSTITUTION:A branched conductor 4 together with an outer conductor of a coaxial structured body 3 having an input terminal connecting to a coaxial transmission line are used as parallel pair conductors to form a parallel line and its load end is used for a load terminal. Moreover, a load end of the center conductor of the said coaxial structure is connected to a load end of the said branch conductor 4 as shown in a caption 6 in the figure, and an input side end of the said branch conductor 4 is in short-circuit with or opened to the outer conductor of the said coaxial structure body as shown in a caption 5 in the figure. Furthermore, a structural body is provided in the inside of the said coaxial structural body, in which the distance between the outer conductor and the center conductor is changed in one-step shape or in multi-step staircase or in tapered shape.

5. 发明专利

JPH04193361A GAS COMPOSITION SEPARATOR 失效
公开(公告)号：JPH04193361A
公开(公告)日：1992-07-13
申请号：JP32703190
申请日：1990-11-28
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： ISHII OSAMU , KOSHIMOTO YASUHIRO , ITO KEIICHIRO
IPC分类号： B03C1/02
摘要： PURPOSE:To separate compositions from a gas with high efficiency by installing in an expansion chamber a partition wall that separates the compositions, which are collected on the side of the ferromagnetic field of a magnetic gradient, from other compositions and discharging them. CONSTITUTION:The gas taken in from a gas inlet 1 is compressed to several ten atmospheric pressures by means of a compressor 2, and the compressed gas is cooled by a radiator 3. Then the compressed gas is further cooled by passing the gas through the trap of the primary side of a heat exchanger 8, and simultaneously moisture that condenses on the side of comparatively high temperature is removed. And then, when an expansion turbine 5 is revolved by means of a kinetic energy from the compressed gas and simultaneously the compressed gas is led to the expansion chamber 11 of a fractional distiller 7 and adiabatically expanded, the temperature of the gas further goes down by Joule-Thomson effect. The fractional distiller 7, having the expansion chamber 11, is provided with the magnetic gradient by a magnet 6 toward the center of the chamber. Because of this magnetic gradient, the compositions having high magnetic susceptibility in the compressed gas are attracted to the magnet 6 and are efficiently separated.

6. 发明专利

JPH04184119A ANGLE SENSOR 失效
公开(公告)号：JPH04184119A
公开(公告)日：1992-07-01
申请号：JP31085090
申请日：1990-11-16
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SENDA MASAKATSU , ISHII OSAMU , KOSHIMOTO YASUHIRO
IPC分类号： G01B7/30 , G01B7/00 , G01D5/16
摘要： PURPOSE:To improve S/N ratio, angle resolution, and sensitivity by having angles of a superconductive conductor and direction of a magnetic field, of a magnetic field generation source movable relatively, according to the measured angle. CONSTITUTION:When a magnetic resistance R of a Bi oxide superconductive conductor 2, is applied with a magnetic field parallel to C shaft direction 21, (theta=0, pi), it shows a large value. However, when a rotating shaft bar 1 rotates, R become smaller gradually, and become minimum when the shaft become perpendicular (theta=pi/2). Therefore, rotation angle of a rotating shaft bar 5 can be known by inspecting changes of magnetic resistance R from an operation current and a voltage of a voltage terminal 4. In this case, S/N ratio is indicated by 1R (theta=0)-R(theta=pi/2)/R(theta=pi/2), and this value is rather high with approx. 10 .

7. 发明专利

JPH04149007A CONDUCTIVE THICK FILM FOR HIGH FREQUENCY PARTS 失效
公开(公告)号：JPH04149007A
公开(公告)日：1992-05-22
申请号：JP27148990
申请日：1990-10-09
申请人： NIPPON TELEGRAPH & TELEPHONE , HITACHI CHEMICAL CO LTD
发明人： ISHII OSAMU , SATO MAKOTO , KOSHIMOTO YASUHIRO , KUWAJIMA HIDEJI , YAMANA SHOZO
IPC分类号： C04B35/00 , C01B13/14 , C01G1/00 , C01G3/00 , C04B35/45 , H01B12/06 , H01L39/06 , H01P3/00
摘要： PURPOSE:To obtain a conductive thick film for high frequency parts with low surface resistance by forming a conductive thick film on a substrate in a manner that the surface layer of the film consists of a mixture layer of metal and oxide superconductor with a specified thickness range. CONSTITUTION:A mixture layer of metal (e.g. a noble metal essentially comprising Ag namely, silver alloy containing 3at.% of Pt,) and oxide superconductor (e.g. YBa2Cu3O7-x) is formed (3-20mum thickness) on a substrate (e.g. yttrium- stabilized zirconia) to obtain the conductive thick film for high frequency parts.

8. 发明专利

JPH0254645B2 失效
公开(公告)号：JPH0254645B2
公开(公告)日：1990-11-22
申请号：JP2735884
申请日：1984-02-17
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： ISHII OSAMU , YOSHIMURA BUNICHI , OOTANI YOSHIMITSU , TERADA AKIRA
IPC分类号： C01G49/02 , C01G49/00 , G11B5/64 , G11B5/84 , G11B5/845 , G11B5/852 , H01F10/18 , H01F41/22

9. 发明专利

JPH01100752A MAGNETIC RECORDING AND OPTICAL REPRODUCING/RECORDING MEDIUM 失效
公开(公告)号：JPH01100752A
公开(公告)日：1989-04-19
申请号：JP25638687
申请日：1987-10-13
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： ISHII OSAMU , HATAKEYAMA IWAO
IPC分类号： G11B11/10 , G11B5/00 , G11B11/105
摘要： PURPOSE:To obtain large reproducing output by a small write current by providing a soft magnetic material, a first vertical magnetizing film, and a second vertical magnetizing film whose anisotropic magnetic field is larger than that of the first vertical magnetizing film and whose Curie temperature is less than that of the first vertical magnetizing film. CONSTITUTION:The soft magnetic material 9, the first vertical magnetizing film 6 formed on the soft magnetic material 9, and the second vertical magnetizing film 7 formed on the first vertical magnetizing film 6 and whose anisotropic magnetic field is larger than that of the first vertical magnetizing film 6 and whose Curie temperature is less than that of the first vertical magnetizing film 6 are provided. Thus, by forming a three layer structure thin film of the soft magnetic material thin film 9, the vertical anisotropic magnetizing thin film 6 with high Curie temperature, and the vertical anisotropic magnetizing thin film 7 with low Curie temperature, it is possible to reduce a magnetic field in case of recording information magnetically, and to set an interval between magnetic head medium widely or to suppress a heating value at the time of driving a high frequency at a low level.

10. 发明专利

JPS6443836A RECORDING METHOD FOR MAGNETO-OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JPS6443836A
公开(公告)日：1989-02-16
申请号：JP19919687
申请日：1987-08-11
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： ISHII OSAMU , HATAKEYAMA IWAO
IPC分类号： G11B5/02 , G11B11/10 , G11B11/105
摘要： PURPOSE:To enable the initialization by a low magnetic field of a overwritable magneto-optical recording medium by forming the initializing a magnetic field of the auxiliary layer of said medium of two components perpendicular and horizontal to the film plane. CONSTITUTION:A recording layer 3 consisting of a thin film and the auxiliary layer 2 are formed on a glass substrate 1. An optical head 4 which outputs laser light 5 for recording is provided. Coils 8 are then provided on both sides of a permanent magnet 6 which generates the magnetic field for initialization so as to sandwich the magnet, then the magnetic field for initialization parallel with the image plane is generated. The inversion torque of magnetic moment is increased by applying this horizontal magnetic field to the medium. The smaller perpendicular magnetic field is, therefore, necessitated; in addition, the magnetic field to generate the magnetization inversion of the auxiliary layer 2 is controlled by controlling the horizontal magnetic field. The miniaturization of the device is thereby enabled.

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