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1. 发明专利

JP2002040502A OPTICAL WAVEGUIDE ELEMENT 失效
公开(公告)号：JP2002040502A
公开(公告)日：2002-02-06
申请号：JP2000226396
申请日：2000-07-27
申请人： NGK INSULATORS LTD
发明人： KONDO ATSUO , KONDO JUNGO , KOZUKA YOSHINARI , MATSUZAWA MOTOICHIRO
IPC分类号： G02B6/12 , G02F1/035 , G02F1/355 , G02F1/377
摘要： PROBLEM TO BE SOLVED: To obtain an optical waveguide element by directly bonding a substrate and a bulk type optical waveguide in such a manner that deterioration in the d constant can be prevented while maintaining the low optical loss by the good crystallinity of the bulk type optical waveguide. SOLUTION: The optical waveguide element 6 comprises a substrate 7 consisting of a lithium tantalate single crystal or lithium niobate-lithium tantalate solid solution single crystal (with

2. 发明专利

JPH0546605B2 失效
公开(公告)号：JPH0546605B2
公开(公告)日：1993-07-14
申请号：JP29932685
申请日：1985-12-27
申请人： NGK INSULATORS LTD
发明人： NAITO TSUTOMU , MATSUZAWA MOTOICHIRO
IPC分类号： G11B5/133 , G11B5/127

3. 发明专利

JPH059377B2 失效
公开(公告)号：JPH059377B2
公开(公告)日：1993-02-04
申请号：JP6375486
申请日：1986-03-20
申请人： NGK INSULATORS LTD
发明人： MATSUZAWA MOTOICHIRO , KOZUKA YOSHINARI
IPC分类号： C01G49/06

4. 发明专利

JPH04366411A THIN-FILM MAGNETIC HEAD 失效
公开(公告)号：JPH04366411A
公开(公告)日：1992-12-18
申请号：JP16877891
申请日：1991-06-13
申请人： NGK INSULATORS LTD
发明人： TERADA NOBUHIRO , MATSUZAWA MOTOICHIRO
IPC分类号： G11B5/105 , G11B5/31 , G11B5/60
摘要： PURPOSE:To enable low-inductance characteristics to be secured advantageously by including a non-magnetic material layer between a slider main body consisting of ferrite and a lower magnetic pole constituting a thin-film head portion and by providing a magnetic gap with a specified spacing. CONSTITUTION:A slider main body 12 consists of ferrites such as Ni-Zn ferrite and Mn-Zn ferrite. Then, a sufficiently large recessed portion 16 is provided at an end face of a trailing side of an air bearing portion 14 at a specified depth d and a specified non-magnetic material such as glass is buried into the recessed portion 16, thus constituting a non-magnetic material layer 18 with a specified depth d. Therefore, the slider main body 12 itself does not function as a magnetic pole and low-inductance characteristics which are features of a thin-film magnetic head can be retained advantageously.

5. 发明专利

JPH02247815A PRODUCTION OF CORE SLIDER FOR STATIONARY MAGNETIC DISK DEVICE 失效
公开(公告)号：JPH02247815A
公开(公告)日：1990-10-03
申请号：JP6890389
申请日：1989-03-20
申请人： NGK INSULATORS LTD
发明人： MATSUZAWA MOTOICHIRO , SHIMIZU MASATAKA , TERADA NOBUHIRO
IPC分类号： G11B5/60 , G11B5/127
摘要： PURPOSE:To produce the core slider having high track width accuracy with good productivity by forming air bearing parts, track parts and track protective projecting parts by an etching technique. CONSTITUTION:Ferrite blocks 10, 12 respectively formed with coil winding grooves 24 are joined to each other with a disk sliding surface 36 positioned on top, by which a gap bar 32 is formed. This gap bar 32 is subjected to an etching treatment using a mask. As a result, the air bearing parts 38, the track parts 40, and the track protective projecting parts 42 are simultaneously formed on the sliding surface 36. The gap bar is thereafter cut to a desired size, by which track width regulating grooves 56, 56 are formed on the bearing parts 38. The desired core slider for the stationary magnetic disk device is obtd. in this way.

6. 发明专利

JPH0231171A PHOTOCURRENT/MAGNETIC FIELD SENSOR 失效
公开(公告)号：JPH0231171A
公开(公告)日：1990-02-01
申请号：JP18069288
申请日：1988-07-20
申请人： NGK INSULATORS LTD
发明人： KAKIZAKI YUICHI , MATSUZAWA MOTOICHIRO , KOZUKA YOSHINARI
IPC分类号： G01R33/032 , G01R15/24
摘要： PURPOSE:To reduce the variation of sensor output due to an environmental temp. change by setting BSO (Bi12SiO20) having natural rotary power so as to have a proper natural angle of rotation as a magnetic optical element. CONSTITUTION:A BSO crystal having natural rotary power is used as a magnetic optical element 4. In order to reduce the variation of modulation output due to an environmental temp. change while sufficient sensitivity is held, it is effective to set the natural angle of rotation of the element 4 to 40+ or -2 deg.. Therefore, the length of the element 4 is set so as to give said angle of rotation. A polarizer 3 and a detector 5 are arranged before and behind the element 4 having Faraday effect to allow the light emitted from a predetermined light emitting means to be incident to the element 4 through the polarizer 3 and the light modulated corresponding to the intensity of the magnetic field acting on the element 4 is detected by a predetermined light detection means to measure the magnetic field acting on the element 4 or the current generating said magnetic field.

7. 发明专利

JPS6347723A PHOTOSENSOR CONSISTING OF OPTICAL ELEMENT COMPLEX 失效
公开(公告)号：JPS6347723A
公开(公告)日：1988-02-29
申请号：JP19151286
申请日：1986-08-15
申请人： NGK INSULATORS LTD
发明人： KOZUKA YOSHINARI , TOYODA SHUHEI , MATSUZAWA MOTOICHIRO , MASE SHUNZO , MATSUURA MASAMI
IPC分类号： G01J1/02 , G02F1/01
摘要： PURPOSE:To obtain a photosensor having a small temp. coefft. and decreased deterioration with age by determining the coefft. of thermal expansion of a light transparent body and the coefft. of thermal expansion of an optical element so as to satisfy the specific relation. CONSTITUTION:The 3rd light transparent body adhered to the 1st and the adjacent 2nd optical elements inserted between the 1st optical element and the 2nd optical element of the photosensor consisting of an optical element complex using an electrooptic effect or magneto-optical effect. The coefft. of thermal expansion alpha3 of the light transparent bodies, the coefft. of thermal expansion alpha1 of the 1st optical element and the coefft. of thermal expansion alpha2 of the 2nd optical element satisfy ¦alpha1-alpha3¦

8. 发明专利

JPS611391B2 JPS611391B2 - 失效
公开(公告)号：JPS611391B2
公开(公告)日：1986-01-16
申请号：JP6789379
申请日：1979-05-31
申请人： Ngk Insulators Ltd
发明人： MATSUZAWA MOTOICHIRO , MASE SHUNZO
IPC分类号： C30B1/02 , C30B1/10

9. 发明专利

JP2001273914A ELECTROCHEMICAL DEVICE AND ACCUMULATED ELECTROCHEMICAL DEVICE 失效
公开(公告)号：JP2001273914A
公开(公告)日：2001-10-05
申请号：JP2000377743
申请日：2000-12-12
申请人： NGK INSULATORS LTD
发明人： MATSUZAWA MOTOICHIRO , KAWASAKI SHINJI , OKUMURA KIYOSHI , RYU TAKASHI
IPC分类号： H01M8/02 , H01M8/12 , H01M8/24
摘要： PROBLEM TO BE SOLVED: To decrease a diffusion resistance of each gas flowing toward each electrode in each electrochemical cell, and also to control deterioration of material for connecting parts of the electrochemical cells next to each other in an electrochemical device which has a structure consisted of plural electrochemical cells connected electrically to each other. SOLUTION: The electrochemical device 5 is equipped with a solid electrolyte layer 9, and with a plurality of first electrodes 16 and a plurality of second electrodes 17 both installed at the solid electrolyte layer 9. A plurality of electrochemical cells 15 are composed of the first electrodes 16 and the second electrodes 17. It is also equipped with at least one through hole electric conductor 22 that penetrates the solid electrolyte layer. At least two electrochemical cells 15, which are next to each other on the solid electrolyte layer, are electrically connected via the through hole electric conductor 22.

10. 发明专利

JPH07249211A HOUSING FOR COMPOSITE TYPE MAGNETIC HEAD 失效
公开(公告)号：JPH07249211A
公开(公告)日：1995-09-26
申请号：JP3863294
申请日：1994-03-09
申请人： NGK INSULATORS LTD
发明人： MATSUZAWA MOTOICHIRO
IPC分类号： G11B5/60 , G11B5/127 , G11B5/17
摘要： PURPOSE:To avert failure of a core chip by forming a slit to be inserted and fixed with the core chip in either of supporting parts existing in parts to be formed as right and left two air flowing surfaces. CONSTITUTION:The parts where the right and left air floating surfaces 24 re formed are supported by the columnar supporting parts 16 and are subjected, in this state, to grinding and polishing for the purpose of forming the air floating surfaces 24 and, therefore, a ski-jump effect does not arise at all, unlike heretofore in the production process of this composite type magnetic head. Since the core chip 22 is wound with a coil 26 in the state of holding the core chip with the right and left supporting parts 16a, 16b, the leg parts 30 of the core chip 22 are effectively protected. Consequently, problems, such as failure of the core chip, at the time of coil winding do not arise.

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