Patents by Inventor Takeo Nagata
Takeo Nagata 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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Patent number: 7968466Abstract: A method for fabricating an electron device on a substrate includes the steps of forming a dummy film over the substrate such that the dummy film covers a device region of the substrate and an outer region of the substrate outside the device region, forming a dummy pattern by patterning the dummy film such that the dummy pattern has a first height in the device region and a second height smaller than the first height in the outer region, forming another film over the substrate such that the film covers the dummy pattern in the device region and in the outer region with a shape conformal to a cross-sectional shape of the dummy pattern, and applying an anisotropic etching process acting generally perpendicularly to the substrate such that a surface of the substrate is exposed in the device region and in the outer region.Type: GrantFiled: November 27, 2007Date of Patent: June 28, 2011Assignee: Fujitsu Semiconductor LimitedInventors: Kenji Ishikawa, Hideharu Shido, Takeo Nagata, Teruo Kurahashi, Yasuyoshi Mishima
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Patent number: 7612400Abstract: An MIM device includes a lower electrode of a metal nitride film, a hysteresis film of an oxide film containing Nb formed on the lower electrode, and an upper electrode of a metal nitride film formed on the hysteresis film.Type: GrantFiled: November 26, 2007Date of Patent: November 3, 2009Assignee: Fujitsu LimitedInventors: Teruo Kurahashi, Hideharu Shido, Kenji Ishikawa, Takeo Nagata, Yasuyoshi Mishima, Yukie Sakita
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Publication number: 20080121858Abstract: An MIM device includes a lower electrode of a metal nitride film, a hysteresis film of an oxide film containing Nb formed on the lower electrode, and an upper electrode of a metal nitride film formed on the hysteresis film.Type: ApplicationFiled: November 26, 2007Publication date: May 29, 2008Applicant: FUJITSU LIMITEDInventors: Teruo KURAHASHI, Hideharu SHIDO, Kenji ISHIKAWA, Takeo NAGATA, Yasuyoshi MISHIMA, Yukie SAKITA
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Publication number: 20080124933Abstract: A method for fabricating an electron device on a substrate includes the steps of forming a dummy film over the substrate such that the dummy film covers a device region of the substrate and an outer region of the substrate outside the device region, forming a dummy pattern by patterning the dummy film such that the dummy patter has a first height in the device region and a second height smaller than the first height in the outer region, forming another film over the substrate such that the film covers the dummy pattern in the device region and in the outer region with a shape conformal to a cross-sectional shape of the dummy pattern, and applying an anisotropic etching process acting generally perpendicularly to the substrate such that a surface of the substrate is exposed in the device region and in the outer region.Type: ApplicationFiled: November 27, 2007Publication date: May 29, 2008Applicant: FUJITSU LIMITEDInventors: Kenji Ishikawa, Hideharu Shido, Takeo Nagata, Teruo Kurahashi, Yasuyoshi Mishima
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Patent number: 7255139Abstract: A powder leveling method and apparatus conducts leveling a thin layer of powder containing fiber to a uniform thickness so as to form friction material having a multi-layered structure. A cavity of predetermined shape having an opening in a flat surface is filled with powder containing fiber so that the powder overflows the opening of the cavity in the flat surface. A cylindrical leveling device is moved in a first direction across the cavity and then in a second direction intersecting with the first direction at a speed greater than the speed with which the leveling device moves in the first direction, so as to trim away the excess powder and make the power in the opening flush with the flat surface.Type: GrantFiled: February 24, 2005Date of Patent: August 14, 2007Assignee: Nisshinbo Industries, IncInventors: Toshiharu Tochio, Takeo Nagata
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Publication number: 20050199036Abstract: A powder leveling method and apparatus capable of leveling to a uniform thickness a thin layer of powder containing fiber so as to form friction material having a multi-layered structure. A cavity of predetermined shape having an opening in a flat surface is filled with powder containing fiber so that the powder overflows the opening of the cavity in the flat surface. A cylindrical leveling device is moved in a first direction across the cavity and then in a second direction intersecting to the first direction at a speed greater than the speed with which the leveling device moves in the first direction, so as to trim away the excess powder and make it flush with the flat surface.Type: ApplicationFiled: February 24, 2005Publication date: September 15, 2005Inventors: Toshiharu Tochio, Takeo Nagata
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Patent number: 6863968Abstract: A non-asbestos-based friction material for brakes, clutches or the like for automobiles, large-size trucks, railway cars and various industrial machines. The friction material has excellent friction and rust preventive characteristics, and attacks the plane it faces to a limited extent. The non-asbestos-based friction material is produced by forming and then curing the non-asbestos-based friction material composition comprising a fibrous base, binder and filler as the major ingredients. The composition contains at least one type of steel fibers selected from the group consisting of iron, special dead soft steel and dead soft steel, containing carbon (C) at 0.13% or less at specific contents, in the fibrous base at 1 to 50% by volume of the whole friction material.Type: GrantFiled: July 30, 2002Date of Patent: March 8, 2005Assignee: Nisshinbo Industries, Inc.Inventors: Takeo Nagata, Jun Nagashima
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Patent number: 6838161Abstract: A non-asbestos friction material is obtained by molding and curing a composition which includes a fibrous base other than asbestos, a binder and a filler wherein the fibrous base contains no inorganic fibers having a length of at least 5 ?m, a diameter of up to 3 ?m and an aspect ratio greater than 3, and the binder includes a resin having a flow of at most 27 mm at 125° C. The friction materials having a porosity of 8 to 20% exhibit a good braking performance and stability, are endowed with good resistance to fade and wear, provide enhanced safety and hygiene during production, and have minimal impact on the human body from dust generated during use.Type: GrantFiled: July 2, 2002Date of Patent: January 4, 2005Assignee: Nisshinbo Industries, Inc.Inventors: Fumihiko Tadokoro, Takayuki Ohe, Takeo Nagata, Jun Nagashima
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Publication number: 20040030000Abstract: A non-asbestos friction material is made of a molded and cured composition containing a fibrous base other than asbestos, a binder, a filler and an abrasive. The abrasive includes zirconium silicate beads. Friction materials thus constituted have suitable coefficients of friction, exhibit a good noise performance, and minimize mating surface attack.Type: ApplicationFiled: August 6, 2003Publication date: February 12, 2004Inventors: Kazuhiro Takeuchi, Takeo Nagata
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Publication number: 20030154882Abstract: The present invention provides non-asbestos-based friction materials for brakes, clutches or the like for automobiles, large-size trucks, railway cars and various industrial machines, characterized in that it causes no cancer or pneumoconiosis (in particular silicosis) in humans, has excellent friction and rust-proof performance and a lower tendency of counter surface attack. The non-asbestos-based friction materials are made by molding and curing a composition comprising, as the major components, a fibrous base, binder and filler, wherein the fibrous base has a length of 5 &mgr;m or more and diameter of 3 &mgr;m or less; is free of inorganic fibers having an aspect ratio (fiber length/fiber diameter) of above 3; and contains chopped strands of amorphous silica, 1 mm or more but less than 3 mm long and 6 &mgr;m or more but less than 10 &mgr;m in diameter.Type: ApplicationFiled: February 21, 2003Publication date: August 21, 2003Inventors: Takeo Nagata, Kazuhiro Takeuchi
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Patent number: 6596789Abstract: A non-asbestos friction material made by molding and curing a composition comprised of a fibrous base, a binder, and a filler has a 100 Hz vibration damping factor (tan &dgr;) at 300° C. minus tan &dgr; at 50° C. value of at least −0.030. The binder may be a rubber-modified high-ortho phenolic resin, a resin mixture of a rubber-modified high-ortho phenolic resin and a rubber-modified phenolic resin, or a resin mixture of two or more rubber-modified phenolic resins. The friction material has an excellent and long-lasting noise performance, and good wear resistance, functional stability, and fade resistance. The rapid curability of the composition enables a short molding cycle.Type: GrantFiled: August 26, 1999Date of Patent: July 22, 2003Assignee: Nisshinbo Industries, Inc.Inventors: Tomoki Nakamura, Takeo Nagata, Kazuhiro Takeuchi, Mitsuru Kobayashi
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Publication number: 20030049427Abstract: A non-asbestos friction material is obtained by molding and curing a composition which includes a fibrous base other than asbestos, a binder and a filler wherein the fibrous base contains no inorganic fibers having a length of at least 5 &mgr;m, a diameter of up to 3 &mgr;m and an aspect ratio greater than 3, and the binder includes a resin having a flow of at most 27 mm at 125° C. The friction materials having a porosity of 8 to 20% exhibit a good braking performance and stability, are endowed with good resistance to fade and wear, provide enhanced safety and hygiene during production, and have minimal impact on the human body from dust generated during use.Type: ApplicationFiled: July 2, 2002Publication date: March 13, 2003Inventors: Fumihiko Tadokoro, Takayuki Ohe, Takeo Nagata, Jun Nagashima
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Publication number: 20030026969Abstract: A non-asbestos-based friction material for brakes, clutches or the like for automobiles, large-size trucks, railway cars and various industrial machines. The friction material has excellent friction and rust preventive characteristics, and attacks the plane it faces to a limited extent. The non-asbestos-based friction material is produced by forming and then curing the non-asbestos-based friction material composition comprising a fibrous base, binder and filler as the major ingredients. The composition contains at least one type of steel fibers selected from the group consisting of iron, special dead soft steel and dead soft steel, containing carbon (C) at 0.13% or less at specific contents, in the fibrous base at 1 to 50% by volume of the whole friction material.Type: ApplicationFiled: July 30, 2002Publication date: February 6, 2003Applicant: Nisshinbo Industries, Inc.Inventors: Takeo Nagata, Jun Nagashima
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Publication number: 20020137815Abstract: A non-asbestos friction material is made by molding and curing a composition comprising a fibrous base, a filler, a binder, and tin and/or tin sulfide and exhibits excellent wear resistance and less metal pickup at high temperatures.Type: ApplicationFiled: January 25, 2002Publication date: September 26, 2002Inventors: Kazuhiro Takeuchi, Takeo Nagata, Kazuo Tsugawa
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Publication number: 20020006981Abstract: A non-asbestos friction material made by molding and curing a composition comprised of a fibrous base, a binder, and a filler has a 100 Hz vibration damping factor (tan &dgr;) at 300° C. minus tan &dgr; at 50° C. value of at least −0.030. The binder may be a rubber-modified high-ortho phenolic resin, a resin mixture of a rubber-modified high-ortho phenolic resin and a rubber-modified phenolic resin, or a resin mixture of two or more rubber-modified phenolic resins. The friction material has an excellent and long-lasting noise performance, and good wear resistance, functional stability, and fade resistance. The rapid curability of the composition enables a short molding cycle.Type: ApplicationFiled: August 26, 1999Publication date: January 17, 2002Inventors: TOMOKI NAKAMURA, TAKEO NAGATA, KAZUHIRO TAKEUCHI, MITSURU KOBAYASHI
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Patent number: 4680627Abstract: In an apparatus for checking patterns on printed circuit boards by comparing two patterns formed on two printed circuit boards, registration patterns each including orthogonal straight line segments and respectively formed on the two printed circuit boards are imaged by two imagers, and registration images from the imagers are matched by means of a registration unit to accurately match an image of a pattern to be checked on one printed circuit board with an image of a reference pattern on the other printed circuit board.Type: GrantFiled: March 12, 1986Date of Patent: July 14, 1987Assignee: Hitachi, Ltd.Inventors: Akira Sase, Takeo Nagata, Masao Fukunaga, Yutaka Sakurai, Yoshikatsu Satomi, deceased
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Patent number: 4424274Abstract: The present invention relates to a microbiological process for the production of citric acid by assimilation of .alpha.-olefins, normal paraffins and their mixture. This process is carried out by culturing the microorganisms selected from the group of Candida tropicalis, Candida lipolytica, Candida intermedia and Canida brumptii and their mutants and their variants under higher concentration of dissolved oxygen than that in ordinary aeration in the culture medium. The concentration of dissolved oxygen in the culture medium is suitable in the range of from 5 to 40 ppm, preferably from 10 to 30 ppm on the weight basis of said culture medium in this invention.There is many means of which increase the dissolved oxygen in the culture medium.Type: GrantFiled: May 6, 1982Date of Patent: January 3, 1984Assignee: Showa Oil Company, Ltd.Inventors: Takao Matsumoto, Yoshiyuki Ichikawa, Takeo Nagata
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Patent number: 4411998Abstract: The present invention relates to a suppressing method of iso-citric acid formation in producing citric acid from hydrocarbons by fermentation.This process is carried out by culturing the microorganisms selected from the group belonging to Candida tropicalis, Candida lipolytica, Candida intermedia and Candida brumptii and their mutants and variants in the culture medium containing paraffinic and olefinic hydrocarbons and their mixture as carbon source under aerobic conditions, wherein specific non-ionic surface active agent is added to said culture medium.The specific non-ionic surface active agent added to said culture medium is selected from the group of sorbitan fatty acid esters and polyoxy-ethylene sorbitan fatty acid esters. The amount of specific surface active agent added to said culture medium is enough from 0.005 to 0.5 percent by weight, preferably from 0.02 to 0.2 percent on the weight basis of said culture medium.Type: GrantFiled: March 19, 1982Date of Patent: October 25, 1983Assignee: Showa Oil Company, Ltd.Inventors: Takao Matsumoto, Atsushi Fujimaki, Takeo Nagata
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Patent number: 4342231Abstract: A differential pressure transmitter has a pressure receiving portion and a sensor portion which are constituted from separate parts separably jointed with each other. The sensor portion includes a semiconductor sensor having one side formed with a resistance pattern and the other side which has a thick-walled peripheral portion and a thick-walled central portion. The semiconductor sensor is incorporated in the sensor portion as being supported at the thick-walled peripheral portion thereof. The pressure receiving portion includes seal diaphragms disposed on both sides of the pressure receiving portion and a central diaphragm disposed therein. The semiconductor sensor is arranged such that the side thereof carrying the resistance pattern faces the pressure receiving portion.Type: GrantFiled: December 16, 1980Date of Patent: August 3, 1982Assignee: Hitachi, Ltd.Inventors: Yoshimi Yamamoto, Yoshitaka Matsuoka, Syozo Kasai, Yukio Takahashi, Takeo Nagata, Akira Nagasu, Tomomasa Yoshida, Satoshi Shimada
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Patent number: 4321578Abstract: A pressure transducer is arranged to mount a semiconductor pressure sensor in a housing such that the pressure of a high-pressure fluid is applied to one side of the semiconductor pressure sensor through a high pressure seal diaphragm and a sealed liquid in the high pressure side, while the pressure of a low-pressure fluid is applied to the other side of the sensor through a low-pressure seal diaphragm and a sealed liquid in the low pressure side, and a protecting member is provided closer to the low-pressure seal diaphragm.Type: GrantFiled: October 3, 1979Date of Patent: March 23, 1982Assignee: Hitachi, Ltd.Inventors: Akira Nagasu, Yosimi Yamamoto, Takeo Nagata, Hiroyasu Uchida, Yutaka Sakurai