Patents by Inventor Kazuo Arai
Kazuo Arai 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).
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Publication number: 20030059740Abstract: The purpose of the present invention is to provide a dental magnetic attachment with minimal gap between the magnetic assembly and keeper, that is easy to install and that results in a denture that is easy to put in and take out.Type: ApplicationFiled: November 9, 2001Publication date: March 27, 2003Inventors: Yoshinobu Honkura, Kazuo Arai
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Publication number: 20030013266Abstract: A semiconductor device is manufactured using a SiC substrate. On a semiconductor region a region formed of SiC having an (11-20) face orientation is formed. A gate insulation layer is a gate oxidation layer. The surface of the semiconductor region is cleaned, and the gate insulation layer is formed in an atmosphere containing hydrogen or water vapor After the gate insulation layer has been formed, the substrate is heat-treated in an atmosphere containing hydrogen or water vapor. This reduces the interface-trap and the semiconductor region.Type: ApplicationFiled: March 20, 2002Publication date: January 16, 2003Applicant: National Inst. of Advanced Ind. Science and Tech.Inventors: Kenji Fukuda, Junji Senzaki, Ryoji Kosugi, Kazuo Arai, Seiji Suzuki
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Publication number: 20020137010Abstract: The present invention is of a dental magnetic attachment with superior strength and anticorrosion characteristics that can accommodate moderate swinging or rotation during occlusion without the formation of a gap between the magnetic assembly and the keeper. Wear resistance of the attractive faces is enhanced by the surface treatment of the attractive faces with a layer of Al2O3, TiN, diamond or other substance.Type: ApplicationFiled: November 28, 2001Publication date: September 26, 2002Applicant: AICHI STEEL CORPORATIONInventors: Yoshinobu Honkura, Kazuo Arai
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Publication number: 20020047125Abstract: An MIS transistor that uses a silicon carbide substrate has a buried channel structure. The surface orientation of the silicon carbide substrate is optimized so that the device does not assume a normally on state, has good hot-carrier endurance and punch-through endurance, and high channel mobility. In particular, a P-type silicon carbide semiconductor substrate is used to form a buried channel region. To achieve high mobility, the depth at which the buried channel region is formed is optimized, and the ratio between buried channel region junction depth (Lbc) source and drain region junction depth (Xj) is made to be within 0.2 to 1.0. The device can be formed on any surface of a hexagonal or rhombohedral or a (110) surface of a cubic system silicon carbide crystal, and provides a particularly good effect when formed on the (11-20) surface.Type: ApplicationFiled: November 14, 2001Publication date: April 25, 2002Applicant: Nat ' l Inst. of Advanced industrial and TechnologyInventors: Kenji Fukuda, Kazuo Arai, Junji Senzaki, Shinsuke Harada, Ryoji Kosugi, Kazuhiro Adachi
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Publication number: 20020039719Abstract: The present invention is a bar type dental attachment for implants that makes use of magnetic attractive force to secure a denture in place. This bar type dental attachment can rotate corresponding to the movement of the denture during occlusion. The present invention has excellent wear resistance and makes insertion and removal of the denture easy. The present invention has a bar type keeper with an arced attractive face with a constant radius of curvature, and a magnetic assembly that comprises a magnet, a pair of yoke plates sandwiching the magnet, and a seal material made of anticorrosive non-magnetic material that covers the magnet and is hermetically sealed. The attractive surface of the magnetic assembly is curved to fit the keeper.Type: ApplicationFiled: September 19, 2001Publication date: April 4, 2002Applicant: AICHI STEEL CORPORATIONInventors: Yoshinobu Honkura, Kazuo Arai
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Patent number: 6302694Abstract: A keeper of the dental magnetic attachment and method for removal of the keeper is disclosed wherein the keeper can be attracted by a magnetic assembly embedded in a denture base. The keeper includes a body made of soft magnetic material and a post made of non-magnetic material that is connected together at the bottom of said body of the keeper. The post has a bendable part that is connected to the body of the keeper.Type: GrantFiled: July 13, 2000Date of Patent: October 16, 2001Assignee: Aichi Steel Corporation Ltd.Inventors: Yoshinobu Honkura, Kazuo Arai, Hiroyuki Tanaka, Kazunari Kimura, Hiroshi Mizutani, Kenji Hiranuma, Hisao Takakura
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Patent number: 6299450Abstract: A dental magnetic attachment which has a superior magnetic attractive force with a small nonmagnetic welded part and a flat welded surface to be polished. The dental magnetic attachment including a magnet, a yoke with a pit to hold the magnet, a sealing disk placed on the opening of the pit to cover the magnet and a nonmagnetic welded part between the yoke and the disk. The yoke and the disk are made from soft magnetic material. The nonmagnetic welded part, which joins the yoke and the disk, is formed by welding the yoke, the sealing disk, the sealing ring made from nonmagnetic austenitic stainless steel and a Ni coat between the sealing disk and the sealing ring together. Here, it is preferably that there remains a part of the nonmagnetic sealing ring. The welded surface of the dental magnetic attachment is polished to be flat.Type: GrantFiled: October 27, 1999Date of Patent: October 9, 2001Assignee: Aichi Steel CorporationInventors: Yoshinobu Honkura, Kazuo Arai, Kazunari Kimura, Lei Tian
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Patent number: 6203325Abstract: A dental magnetic attachment having good cushioning properties against a compressing pressure which makes a denture sink appropriately on biting. The dental magnetic attachment embedded in the denture base for holding the denture in the oral cavity by a magnetic attractive force working with the magnetic assembly and a soft magnetic keeper embedded in the top of the root surface includes a magnetic assembly and a cap covering the top of the magnetic assembly. The magnetic assembly has a hollow in the center of its top. The cap with a button is placed on the magnetic assembly, inserting the button into the hollow to contact to its bottom. On biting, the button is compressed, to be deformed with a shorter thickness and at this time a sleeve formed as a body around the core slides down along the side of the magnetic assembly to reduce the thickness of the dental magnetic attachment. This sliding makes the denture sink uniformly and appropriately.Type: GrantFiled: October 5, 1999Date of Patent: March 20, 2001Assignee: Aichi Steel Works, Ltd.Inventors: Yoshinobu Honkura, Kazuo Arai, Kazunari Kimura
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Patent number: 6095949Abstract: A health management device according to this invention comprises: an exercise quantity measurer for measuring a quantity of exercise; an intake calorie calculator for calculating an intake calorie on the basis of input information of meal including the types and quantities of foods; a consumption calorie calculator for calculating, on the basis of the information of a quantity of exercise measured by the exercise quantity measurer, a calorie consumed by the exercise; a calorie balance analyzer for analyzing a calorie balance on the basis of the calculation results of the intake calorie and the consumption calorie; a diet effect simulator for simulating a diet effect on the basis of the information of the analyzed calorie balance and personal information; and a moving image display controller for changing a display character to display the diet effect with a moving image.Type: GrantFiled: June 17, 1998Date of Patent: August 1, 2000Assignee: ADK CorporationInventor: Kazuo Arai
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Patent number: 5915822Abstract: A transmitted illumination type meter comprises a transparent light transmitting board having both a light entering bore and a shaft passing bore formed therethrough; a translucent dial plate placed on a front surface of the board, the dial plate having a shaft passing opening mated with the shaft passing bore of the board; a movement positioned behind the board; a light source positioned within the light entering bore; a drive shaft extending from the movement to the outside of the dial plate through the shaft passing bore and the shaft passing opening; a transparent pointer connected to the drive shaft to move over a front surface of the dial plate; and an annular convex peripheral wall defining the light entering bore. The annular convex peripheral wall allows light beams from the light source to enter the board and travel in parallel in the same. A plurality of stepped annular light reflecting surfaces are formed on a rear surface of the board and arranged to be concentric with the light entering bore.Type: GrantFiled: August 8, 1997Date of Patent: June 29, 1999Assignee: Kansei CorporationInventors: Akihiro Ogura, Masanori Tone, Kazuo Arai, Tetsuhide Takeyama, Toshitaka Higuchi
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Patent number: 5752865Abstract: A circular nozzle disposed in front of a propeller of a ship has a leading edge thereof which divided an upper leading edge and a lower leading edge. The upper leading edge approaches progressively the propeller disc toward the lower part thereof, the angle of inclination of the upper leading edge and that of the lower leading edge become different, with the junction part at which the upper and lower leading edges meet being the border, and the junction is positioned in the proximity of a horizontal plane including the axis line of the propeller shaft.Type: GrantFiled: November 25, 1996Date of Patent: May 19, 1998Assignee: Mitsui Engineering & Shipbuilding Co., Ltd.Inventors: Norio Ishii, Kazuo Arai, Hiroshi Tomaru, Akihiko Fujii, Yuki Takahashi
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Patent number: 5678998Abstract: A dental magnetic attachment embedded in the denture base so as to face a soft magnetic keeper embedded in the top of the root surface comprising a magnet body with a magnet cover sandwiched by a pair of yoke plates and have its magnetic pole to face the yoke plates, the magnet cover made of corrosion resistant non-magnetic material covering lateral face of the magnet body, the pair of yoke plates made of corrosion resistant soft magnetic material, the keeper made of corrosion resistant soft magnetic material, in condition that the yoke plates and the magnet cover are welded together.Type: GrantFiled: September 20, 1995Date of Patent: October 21, 1997Assignee: Aichi Steel Works, Ltd.Inventors: Yoshinobu Honkura, Lei Tian, Hideki Fujii, Kazuo Arai, Yoshinobu Tanaka
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Patent number: 5481112Abstract: A method and apparatus are disclosed for controlling a physical property such as deposited film thickness to a desired value of control in a high temperature process using a desired emissivity power ratio and an emissivity power ratio measured from detected radiation energy. The measured emissivity power ratio is obtained on-line from detection signals of radiation sensors. A desired value of control is converted to the desired emissivity power ratio using predetermined relationships established by theory or experiment. The desired emissivity power ratio and the measured emissivity power ratio are compared to achieve the desired value of control.Type: GrantFiled: August 29, 1994Date of Patent: January 2, 1996Assignee: Kawasaki Steel CorporationInventors: Tomohiro Marui, Kazuo Arai
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Patent number: 5332342Abstract: A cutter for use in an electrode tip dresser, which has a cutter holder for holding the cutter and dresses an electrode tip for a resistance welding apparatus, has a rising portion which has a cutting tooth for cutting a front peripheral portion of the electrode tip and a flat portion which faces a front end surface of the electrode tip. The flat portion has a single cutting tooth for cutting the front end surface of the electrode tip. The single cutting tooth extends from that central point of the cutter as and origin which coincides with an axis of rotation of the cutter holder towards a predetermined radial direction. An origin portion of the single cutting tooth further extends beyond the central point towards a direction which is opposite to the radial direction.Type: GrantFiled: March 25, 1992Date of Patent: July 26, 1994Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Hiroyuki Kizaki, Kazuo Arai, Sadao Kamei, Toyoji Yamada, Takeshi Okubo, Kenji Takahashi, Yukihiro Yaguchi, Tadashi Takeo, deceased
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Patent number: 5314249Abstract: Radiated light with a specified wavelength from a material is detected and a first parameter corresponding to the emissivity ratio is obtained from the plurality of detection signals. Since the emissivity takes on different values according to the condition of the surface of the material, the first parameter changes depending on the surface condition of the material. There is a correlation between a physical value indicating a condition of the material surface and the first parameter. The correlation remains equivalent even if a second parameter corresponding to the physical value is used instead of the physical value itself (for example, an optical physical value such as reflectivity and absorptivity, the thickness of a film formed on the material surface, the surface roughness, and the degree of galvannealing). As an example of the parameter corresponding to the physical value, there is the logarithmic ratio between emissivities (ln .epsilon..sub.a /ln .epsilon..sub.Type: GrantFiled: November 13, 1992Date of Patent: May 24, 1994Assignee: Kawasaki Steel CorporationInventors: Tomohiro Marui, Kazuo Arai
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Patent number: 5311924Abstract: A method and apparatus is provided for stabilizing the molten metal surface in a mold. The invention is used to improve the quality of the casting slab by modifying a controlling parameter according to the detected slab drawing speed and the actual nozzle flowing characteristics calculated by the measured molten metal surface level and the nozzle opening degree.Type: GrantFiled: March 18, 1993Date of Patent: May 17, 1994Assignee: Kawasaki Steel CorporationInventors: Kazuya Asano, Takayuki Kaji, Kazuo Arai, Shuji Tanaka, Michio Ibaraki, Yuki Nabeshima, Hiromitsu Yamanaka, Masaki Takashi, Saburo Moriwaki, Mototatsu Sugizawa, Hiroshi Nomura, Masayuki Onishi
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Patent number: 5263520Abstract: An air-suction nozzle for greatly improving the efficiency of waste disposal by compacting trash-filled bags. The air-suction nozzle has a hub member having an opening to communicate with an air-suction line, an outer tube air-tightly held by the hub member and having perforations, an inner tube held by the hub member concentrically with the outer tube and having at least one perforation at a position close to the hub member and communicating with the opening in the hub member, and a plug member sealing and holding the outer and inner tubes concentric at the respective ends remote from the hub member. The air inside a trash-filled plastic bag can be sucked out through the nozzle inserted into the bag without sucking of water even when the trash is wet.Type: GrantFiled: August 12, 1992Date of Patent: November 23, 1993Assignee: Free Hand, Inc.Inventor: Kazuo Arai
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Patent number: 5247402Abstract: An apparatus for high speed searching and reproduction of data recorded in a tape medium includes magnetic tape, a tape mover, a high speed tape mover, a rotation cylinder with at least one head, a speed sensor, a controller, and signal converter and processor. The speed sensor generates pulses based on the speed of the rotation cylinder. The controller controls the rotation speed of a rotation cylinder based on the pulses. The controller controls the rotation speed so that a track-directional component of a relative speed between a head of a rotation cylinder and the magnetic tape in a high speed moving state realized by the high speed mover equals a first moving state realized by the tape mover. The signal converter converts at least sub-code data of output signals issued from the head into digital signals in both the first moving state and the high-speed moving state. The sub-code data represents tape-position information.Type: GrantFiled: November 13, 1990Date of Patent: September 21, 1993Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Akira Yoshikawa, Kazuo Arai
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Patent number: 5044735Abstract: There is disclosed a liquid crystal display device which comprises a liquid crystal material aligned between a pair of substrates each having an oriented layer, characterized in that the following conditions (a) to (d) are satisfied:(a) the twisted angle of the liquid crystal molecule in the liquid crystal material aligned between the above pair of substrates is 200.degree. to 300.degree.;(b) the angle created between the director direction of the liquid crystal molecule contacting at least one of the oriented layer surfaces of the above oriented layers and the substrate surface having the oriented layer is not less than 5.degree.;(c) the following relationship formula (1) is valid between the spontaneous twisting pitch Ps of the liquid crystal molecule and the compulsively twisted pitch Pc of the liquid molecule when the arrangement of liquid crystal molecules is compulsorily regulated by the oriented layers:0<(Pc-PS)/Pc.ltoreq.0.Type: GrantFiled: May 25, 1990Date of Patent: September 3, 1991Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Kazuo Asano, Kazuo Arai, Shinichi Nishi
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Patent number: 5026509Abstract: A tracking control system for an information reproducing apparatus employs a recording medium which has recorded therein a tracking signal including a pilot signal and a synchronizing signal.Type: GrantFiled: January 19, 1988Date of Patent: June 25, 1991Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kazuo Arai, Shinji Okada