Patents by Inventor Masahiro Yanagawa
Masahiro Yanagawa 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: 20230005148Abstract: The disclosed feature makes it possible to accurately determine a change that has occurred in a tissue. The feature includes: a binarizing section (41) that generates, from an image to be analyzed, a plurality of binarized images having respective binarization reference values different from each other; a Betti number calculating section (42) that calculates, for each of the plurality of binarized images, a one-dimensional Betti number indicating the number of hole-shaped regions each of which is surrounded by pixels each having a first pixel value obtained by binarization and is constituted by pixels each having a second pixel value obtained by binarization; and a determining section (44) that determines a change that has occurred in the tissue, based on a binarization reference value and a one-dimensional Betti number in a binarized image in which the one-dimensional Betti number is maximized.Type: ApplicationFiled: December 4, 2020Publication date: January 5, 2023Inventors: Hodaka NUMASAKI, Shoichi TOMOHISA, Masahiko KOIZUMI, Hirofumi YAMAMOTO, Kazuaki NAKANE, Noriyuki TOMIYAMA, Masahiro YANAGAWA, Osamu HONDA
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Patent number: 6342112Abstract: An Al—Mg based alloy sheet product in which the crystallographic texture exhibits a ratio of the volume fraction of grains in the S orientation {123}<634> to the volume fraction of grains in the CUBE orientation {100}<001> (S/Cube) being 1 or more, and is comprised of grains with a volume fraction of about 10% or less in the GOSS orientation {110}<001>, wherein the grain size is in a range of about 20 to 100 &mgr;m demonstrates good formability.Type: GrantFiled: July 19, 2000Date of Patent: January 29, 2002Assignees: Alcoa Inc., Kobe Steel Ltd.Inventors: Frederic Barlat, John C. Brem, Shigeo Hattori, Yasuhiro Havashida, Daniel J. Lege, Kwansoo Chung, Yasushi Maeda, Kuniaki Matsui, Shawn J. Murtha, Masahiro Yanagawa, Narikazu Hashimoto
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Patent number: 6334916Abstract: The present invention provides an Al—Mg—Si based alloy sheet whose press-formability (particularly, deep-drawing formability, stretch-formability and bendability) is made higher than conventional Al—Mg—Si based alloy sheets of JIS 6000 series. For texture of the Al—Mg—Si based alloy sheet, orientation density of at least Cube orientation is controlled in accordance with a sort of press forming, so that press-formability improved to match with the press forming is provided. For example, to improve deep-drawing formability of an Al—Mg—Si based alloy sheet, the ratio of orientation density of Goss orientation to the orientation density of the Cube orientation (Goss/Cube) is set to 0.3 or less, and a grain size is set to 80 &mgr;m or less.Type: GrantFiled: May 10, 2000Date of Patent: January 1, 2002Assignee: Kobe Steel Ltd.Inventors: Katsushi Matsumoto, Yasuaki Sugizaki, Masahiro Yanagawa, Yuichi Seki
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Patent number: 6231809Abstract: An Al—Mg—Si type alloy sheet contains 0.2 to 1.5 wt % of Mg and 0.2 to 1.5 wt % of Si. The sheet has textures in which orientation distribution density of Goss orientation is 3 or lower, orientation distribution density of PP orientation is 3 or lower and orientation distribution density of Brass orientation is 3 or lower. The sheet may contain 0.01 to 1.5 wt % in total weight of one or more elements selected from the group consisting of Mn, Cr, Fe, Zr, V and Ti. The sheet may further contain 0.01 to 1.5 wt % in total weight of one or more elements selected from the group consisting of Cu, Ag, Zn and Sn. Thus, ridging marks is restrained in the aluminum alloy sheet.Type: GrantFiled: August 17, 1999Date of Patent: May 15, 2001Assignees: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.), Kobe Alcoa Transporation Products Ltd.Inventors: Katsushi Matsumoto, Masahiro Yanagawa, Yasuo Takaki
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Patent number: 6221182Abstract: By careful control of composition and processing, Al—Mg based alloy sheets with preferred grain sizes and crystallographic textures that result in good press formability are disclosed. The Al—Mg alloy preferably contains 2-6 wt % Mg, and at least 0.03 wt % of at least one element selected from Fe, Mn, Cr, Zr, and Cu. The crystallographic texture is comprised of grains with a volume fraction in a range of about 30-50% in the CUBE orientation {100}<001>, and a volume fraction in a range of about 10 to 20% in the BRASS orientation {110}<112>, wherein the grain size is within a range of about 50 to 100 &mgr;m.Type: GrantFiled: July 19, 2000Date of Patent: April 24, 2001Assignees: Alcoa Inc., Kobe Steel Ltd.Inventors: Frederic Barlat, John C. Brem, Shigeo Hattori, Yasuhiro Hayashida, Daniel J. Lege, Yasushi Maeda, Kuniaki Matsui, Shawn J. Murtha, Masahiro Yanagawa, Kwansoo Chung, Narikazu Hashimoto
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Patent number: 6117252Abstract: By careful control of composition and processing, Al--Mg based alloy sheets with preferred grain sizes and crystallographic textures that result in good press formability are disclosed. The Al--Mg alloy preferably contains 2-6 wt % Mg, and at least 0.03 wt % of at least one element selected from Fe, Mn, Cr, Zr, and Cu. The crystallographic texture is comprised of grains with a volume fraction in a range of about 5% to 20% in the CUBE orientation {100} <001>, a volume fraction in a range of about 1% to 5% in the GOSS orientation {110} <001>, a volume fraction in a range of about 1% to 10% in each of the BRASS orientation {110} <112>, S orientation {123} <634>, and COPPER orientation {112} <111>, wherein the grain size is in a range of about 20 to 70 .mu.m.Type: GrantFiled: August 26, 1999Date of Patent: September 12, 2000Assignee: Alcoa Inc.Inventors: Frederic Barlat, John C. Brem, Shigeo Hattori, Yasuhiro Hayashida, Daniel J. Lege, Yasushi Maeda, Kuniaki Matsui, Shawn J. Murtha, Masahiro Yanagawa, Kwansoo Chung, Narikazu Hashimoto
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Patent number: 6066392Abstract: An Al material having an anodic oxidation film is provided that is excellent in gas and plasma corrosion resistance. By the present invention, a crack is not generated in the anodic oxidation film even in high temperature thermal cycles and corrosive gas or plasma environment. In the Al material having an Al alloy having on its surface an anodic oxidation film according to the invention, the anodic oxidation film has a porous layer and a barrier layer, and portions of cell triplet points, at which boundary faces of 3 cells in the porous layer melt, have secondary-pores.Type: GrantFiled: November 16, 1998Date of Patent: May 23, 2000Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Jun Hisamoto, Toshiyuki Tanaka, Masahiro Yanagawa
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Patent number: 6027629Abstract: The present invention relates to a vacuum chamber and chamber parts made of aluminum or its alloys which exhibit excellent corrosion resistance to a corrosive gas or plasma introduced into the vacuum chamber, the surface treatment, and material for the vacuum chamber. The vacuum chamber has a porous layer with a structure in which a pore diameter at the top thereof is small, while a pore diameter at the bottom thereof is large. In order to give such a structure to the porous layer, a final anodizing voltage is set to be higher than an initial anodizing voltage when the surface of the base material is anodized. After the porous-type anodizing is completed, non-porous type anodizing may be conducted so as to grow a barrier layer. Furthermore, the base material made of aluminum alloy preferably has particles such as precipitates and/or deposits with a diameter of 10 .mu.m or less in average, and the precipitates and/or deposits are arranged in parallel with a largest surface of the base material.Type: GrantFiled: May 16, 1997Date of Patent: February 22, 2000Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Jun Hisamoto, Koji Wada, Koki Ikeda, Masahiro Yanagawa
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Patent number: 5925313Abstract: There is provided an Al base alloy containing boron which is superior in mechanical properties such as strength, ductility or workability and the like and has a neutron absorbing capacity and an ability to recycle. This is an Al base alloy containing boron with Mg: 2 to 8% (massed %, similarly applied hereinafter) and B: 0.5 to 1.5% and satisfying a relation of .sup.10 B/(.sup.10 B+.sup.11 B).gtoreq.95%, and a rate of AlB.sub.2 in all boron compounds is 80% or more by a volumetric rate.Type: GrantFiled: April 22, 1996Date of Patent: July 20, 1999Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Katsura Kajihara, Haruo Kakunai, Yuichi Seki, Tadahiko Yamashita, Masahiro Yanagawa
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Patent number: 5642475Abstract: An apparatus and method for editing different graphics displayed on a screen and correlated to each other. More specifically, according to various embodiments of the invention, an apparatus and method are provided for editing a hierarchically structured graphic forming a hierarchical structure with a plurality of group graphics, independently editing each graphic forming a group graphic, and changing the view of a first graphic related to a second graphic in response to changes of attributes of the second graphic.Type: GrantFiled: August 31, 1994Date of Patent: June 24, 1997Assignees: Fujitsu Limited, PFU LimitedInventors: Yasunari Itoh, Taiji Okamoto, Satoshi Kikuchi, Masahiro Yanagawa, Atsuko Kasai
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Patent number: 4943319Abstract: Disclosed is herein a process for producing a molding product of Al or Cu composite material, which comprises admixing a functional material capable of improving the desired property of the composite material by dispersion into a matrix to a powder of metal selected from Al, Cu or alloys thereof constituting the matrix, charging the dust directly into a molding die, applying cold dust core molding under the pressure of greater than 5 t/cm.sup.2 of facial pressure and applying a diffusing treatment at a temperature higher than 300.degree. C.Type: GrantFiled: December 30, 1988Date of Patent: July 24, 1990Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Masahiro Yanagawa, Mutsumi Abe, Kenichi Aota, Takashi Motoda