Patents by Inventor Takao Doi

Takao Doi 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).

  • Publication number: 20200076103
    Abstract: There are provided a tin-plated product which has a zinc plating layer on the surface thereof and which has good corrosion resistance and good adhesion of the zinc plating even if the connecting portion of a terminal of the tin-plated product to an electric wire of aluminum or an aluminum alloy is not processed during press fitting such as swaging (or caulking) when the tin-plated product is used as the material of the terminal which is to be connected to the electric wire by press fitting, and a method for producing the same.
    Type: Application
    Filed: November 21, 2017
    Publication date: March 5, 2020
    Applicant: Dowa Metaltech Co., Ltd.
    Inventors: Hiroto Narieda, Yuta Sonoda, Tatsuhiro Doi, Takao Tomiya
  • Publication number: 20200033248
    Abstract: In a method for analyzing samples involving the use of a device for analyzing samples, the device for analyzing samples includes at least a movement part through which a sample moves, and a measurement unit that is formed in a middle of the movement part and that measures a value of an ion current when the sample passes through the movement part. The analysis method includes at least a measurement step for measuring the value of the ion current when the sample passes through the movement part, and a determination step for determining a change over time in a quantity of ions from the value of the ion current measured in the measurement step. The quantity of ions includes a quantity of ions that have leaked from the sample during movement of the sample through the movement part.
    Type: Application
    Filed: October 4, 2017
    Publication date: January 30, 2020
    Inventors: Hirotoshi YASAKI, Takao YASUI, Noritada KAJI, Yoshinobu BABA, Tomoji KAWAI, Satoyuki KAWANO, Kentaro DOI, Takeshi YANAGIDA, Mao FUKUYAMA
  • Publication number: 20190189800
    Abstract: The disclosure reduces the risk of collapse of the wall surrounding the trench and suppresses the withstand voltage fluctuation that accompanies the manufacturing variation for a semiconductor device having a super junction structure. The semiconductor device includes a drift layer of a first conductivity type and a plurality of embedded parts embedded in the drift layer. The embedded parts are of a second conductivity type different from the first conductivity type, and the embedded parts are arranged with a first direction as a longitudinal direction and spaced from each other along a second direction that intersects the first direction. A width of each of the embedded parts in the second direction changes continuously along the first direction.
    Type: Application
    Filed: December 19, 2018
    Publication date: June 20, 2019
    Applicant: LAPIS Semiconductor Co., Ltd.
    Inventors: Toshiyuki Orita, Tomomi Yamanobe, Makoto Higashihira, Yuuki Doi, Toshifumi Kobe, Masao Tsujimoto, Takao Kaji, Kiyofumi Kondou
  • Publication number: 20140110328
    Abstract: The forward osmosis membrane flow system (1) includes a high osmotic pressure fluid flow section (2) to which a high osmotic pressure fluid is supplied, a low osmotic pressure fluid flow section (3) to which a low osmotic pressure fluid with a lower osmotic pressure than that of the high osmotic pressure fluid is supplied, and a semipermeable membrane (4) that separates the high osmotic pressure fluid flow section and the low osmotic pressure fluid flow section from each other. A flow rate in the high osmotic pressure fluid flow section (2) is increased by an occurrence of fluid migration from the low osmotic pressure fluid flow section (3) into the high osmotic pressure fluid flow section (2) through the semipermeable membrane (4). The semipermeable membrane (4) is a composite semipermeable membrane with a polyamide-based skin layer formed on a porous epoxy resin membrane.
    Type: Application
    Filed: June 8, 2012
    Publication date: April 24, 2014
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takao Doi, Osamu Hayashi, Masahiko Hirose, Makoto Kobuke, Yoshihide Kawaguchi, Noriaki Harada
  • Patent number: 6958407
    Abstract: A phenyl ester is produced by allowing benzene, a carboxylic acid and molecular oxygen to react with each other in the presence of a catalyst comprising (A) palladium, (B) at least one element selected from elements of groups 13, 14, 15, and 16 and the fourth to sixth periods of the periodic table, and (C) at least one element selected from elements of groups 3, 4 and lanthanoid elements of the periodic table. Preferably, element (B) is selected from elements of group 16 and the fourth to sixth periods of the periodic table, and element (C) is contained in a metal oxide form in the catalyst. The catalytic activity can be maintained at a high level, and a phenyl ester is stably produced. The phenyl ester can be converted to phenol by a conventional procedure.
    Type: Grant
    Filed: November 4, 2004
    Date of Patent: October 25, 2005
    Assignee: Tosoh Corporation
    Inventors: Yoshihiko Mori, Takao Doi, Tetsuo Asakawa, Takanori Miyake
  • Publication number: 20050138877
    Abstract: In order to obtain a plane lattice hollow concrete slab having a high workability and a high sound insulating property, and a cross arm brace used in the plane lattice hollow concrete slab, the plane lattice hollow concrete slab comprises a light weight body 5 buried in a small space 4 which is partitioned on a grid by upper reinforcing bars 3a and 3b and lower reinforcing bars 2a and 2b positioned on a grid in a slab. The light weight body is a solid-core or a hollow light weight ball body. The light weight body has a diameter which passes through a top surface of the small space and which does not pass through a side surface of the small space. The light weight body is fixed to a predetermined position by a cross arm brace which is positioned on the upper reinforcing bar.
    Type: Application
    Filed: December 30, 2003
    Publication date: June 30, 2005
    Inventors: Kenji Inoue, Hisao Inokuchi, Takayuki Ueda, Takao Doi
  • Patent number: 6875508
    Abstract: A fiber capable of forming a metal chelate and a process for producing the same are disclosed, wherein the fiber is characterized in that at least one metal chelate-forming compound selected from the group consisting of aminodicarboxylic acids, aminocarboxylic acids, thiocarboxylic acids and phosphoric acid, which are reactive with a glycidyl group, is bonded to a molecule of a natural fiber or regenerated fiber through a crosslinkable compound having a reactive double bond and a glycidyl group in its molecule. There are also disclosed a method of capturing metal ions using the fiber and a metal chelate fiber which can effectively make use of the characteristics of the metals and can be easily discarded or incinerated.
    Type: Grant
    Filed: February 24, 2000
    Date of Patent: April 5, 2005
    Assignees: Chelest Corporation, Chubu Chelest Co., Ltd.
    Inventors: Nobuyoshi Nambu, Osamu Ito, Shiho Horiuchi, Takao Doi
  • Patent number: 6872317
    Abstract: A chelate-forming filter which comprises a filter medium made of natural, regenerated, or synthetic fibers wherein the fiber molecules have, incorporated therein, chelate-forming functional groups represented by general formula (1) [wherein G represents a residue of a chain sugar alcohol or of a polyhydric alcohol; and R represents hydrogen, (lower) alkyl, or -G (wherein G has the same meaning as the above G, and the two G's may be the same or different)] or (3) (wherein R1, R2, and R3 each represents lower alkylene; and n is an integer of 1 to 4).
    Type: Grant
    Filed: April 16, 1999
    Date of Patent: March 29, 2005
    Assignee: Chelest Corporation and Chubu Chelest Co., Ltd.
    Inventors: Nobuyoshi Nambu, Osamu Ito, Nobutake Mihara, Takao Doi
  • Publication number: 20050065363
    Abstract: A phenyl ester is produced by allowing benzene, a carboxylic acid and molecular oxygen to react with each other in the presence of a catalyst comprising (A) palladium, (B) at least one element selected from elements of groups IIIb, IVb, Vb and VIb of the periodic table, and (C) at least one element selected from elements of groups IIIa and IVa of the periodic table. Preferably, element (B) is selected from elements of group VIb of the periodic table, and element (C) is contained in a metal oxide form in the catalyst. The catalytic activity can be maintained at a high level, and a phenyl ester is stably produced. The phenyl ester can be converted to phenol by a conventional procedure.
    Type: Application
    Filed: November 4, 2004
    Publication date: March 24, 2005
    Inventors: Yoshihiko Mori, Takao Doi, Tetsuo Asakawa, Takanori Miyake
  • Patent number: 6869537
    Abstract: A fiber capable of forming a metal chelate and a process for producing the same are disclosed, wherein the fiber is characterized in that at least one metal chelate-forming compound selected from the group consisting of aminocarboxylic acid, aminocarboxylic acid, thiocarboxylic acid and phosphoric acid, which are reactive with a glycidyl group, is bonded to a molecule of a synthetic fiber through a crosslinkable compound having a reactive double bond and a glycidyl group in its molecule. The chelate-forming fiber is excellent in capturing harmful heavy metal ions and can be easily produced in a simple and safe way at a low cost.
    Type: Grant
    Filed: May 22, 2000
    Date of Patent: March 22, 2005
    Assignees: Chubu Chelest Co., Ltd., Chelest Corporation
    Inventors: Nobuyoshi Nambu, Osamu Ito, Takao Doi
  • Patent number: 6815394
    Abstract: A phenyl ester is produced by allowing benzene, a carboxylic acid and molecular oxygen to react with each other in the presence of a catalyst comprising (A) palladium, (B) at least one element selected from elements of groups 13, 14, 15, and 16 and the fourth to sixth periods of the periodic table, and (C) at least one element selected from elements of groups 3, 4 and lanthanoid elements of the periodic table. Preferably, element (B) is selected from elements of group 16 and the fourth to sixth periods of the periodic table, and element (C) is contained in a metal oxide form in the catalyst.
    Type: Grant
    Filed: November 13, 2002
    Date of Patent: November 9, 2004
    Assignee: Tosoh Corporation
    Inventors: Yoshihiko Mori, Takao Doi, Tetsuo Asakawa, Takanori Miyake
  • Patent number: 6780934
    Abstract: A room temperature-setting composition containing a polyoxyalkylene polymer (A) having a molecular weight ranging from 8000 to 50000 and having hydrolyzable silicon groups of the following formula (1): —SiXaR13−a  (1) wherein R1 is a C1-20 substituted or unsubstituted monovalent organic group, X is a hydroxyl group or a hydrolyzable group, a is 1, 2 or 3, provided that when more than one R1 group is present, the R1 groups may be the same or different, and when more than one X group is present, the X groups may be the same or different, the composition comprising, as an essential component, the polyoxyalkylene polymer, having a molecular weight ranging from 8000 to 50000 and having hydrolyzable silicon groups of formula (1), wherein a is 3, or the composition comprises a polyoxyalkylene polymer component as defined above which contains said essential specific polyoxyalkylene polymer component, and a polymer (B) made by polymerization of a polymerizable unsaturated group-containing monom
    Type: Grant
    Filed: August 29, 2002
    Date of Patent: August 24, 2004
    Assignee: Asahi Glass Company Ltd.
    Inventors: Takao Doi, Takashi Watabe, Tomoko Matsumoto, Tatsuo Onoguchi, Kaori Tsuruoka
  • Publication number: 20030092863
    Abstract: A room temperature-setting composition containing a polyoxyalkylene polymer (A) having a molecular weight ranging from 8000 to 50000 and having hydrolyzable silicon groups of the following formula (1):
    Type: Application
    Filed: August 29, 2002
    Publication date: May 15, 2003
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Takao Doi, Takashi Watabe, Tomoko Matsumoto, Tatsuo Onoguchi, Kaori Tsuruoka
  • Patent number: 6528679
    Abstract: A phenyl ester is produced by allowing benzene, a carboxylic acid and molecular oxygen to react with each other in the presence of a catalyst comprising (A) palladium, (B) at least one element selected from elements of groups 13, 14, 15, and 16 and the fourth to sixth periods of the periodic table, and (C) at least one element selected from elements of groups 3, 4 and lanthanoid elements of the periodic table. Preferably, element (B) is selected from elements of group 16 and the fourth to sixth periods of the periodic table, and element (C) is contained in a metal oxide form in the catalyst. The phenyl ester can be converted to phenol by hydrolysis or ester exchange.
    Type: Grant
    Filed: September 27, 2000
    Date of Patent: March 4, 2003
    Assignee: Tosoh Corporation
    Inventors: Yoshihiko Mori, Takao Doi, Tetsuo Asakawa, Takanori Miyake
  • Patent number: 6207766
    Abstract: The present invention provides a room temperature-setting composition containing a polyoxyalkylene polymer (A), having a molecular weight of from 8000 to 50000 and having hydrolyzable silicon groups of the following formula (1), which comprises, as an essential component, the polyoxyalkylene polymer, having a molecular weight of from 8000 to 50000 and having hydrolyzable silicon groups of the formula (1), wherein a is 3 and a room temperature-setting composition containing a polyoxyalkylene polymer (A) having a molecular weight of from 8000 to 50000 and having hydrolyzable silicon groups of the formula (1), which comprises, as essential components, the polyoxyalkylene polymer having a molecular weight of from 8000 to 50000 and having hydrolyzable silicon groups of the formula (1) wherein a is 3, and a polymer (B) made by polymerization of a polymerizable unsaturated group-containing monomer (C): —SiXaR13−a  (1) wherein R1 is a C1-20 substituted or unsubstituted monovalent organic group
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: March 27, 2001
    Assignee: Asahi Glass Company Ltd.
    Inventors: Takao Doi, Takashi Watabe, Tomoko Matsumoto, Tatsuo Onoguchi, Kaori Tsuruoka
  • Patent number: 5973096
    Abstract: A process for purifying a polyether, which comprises adding to a polyether (A) containing a first salt, water (B) and a compound (C) which is capable of reacting with an ion constituting the first salt to form a second salt which is essentially insoluble in the polyether (A), then removing water, followed by removing the second salt from the polyether (A).
    Type: Grant
    Filed: December 16, 1997
    Date of Patent: October 26, 1999
    Assignee: Asahi Glass Company Ltd.
    Inventors: Takashi Watabe, Hiroshi Hatano, Kazunori Chiba, Takao Doi, Toru Ueno, Etsuko Sakai, Minoru Yamada, Shinya Saiki, Hirotsugu Yamamoto, Toshihiko Higuchi
  • Patent number: 5811566
    Abstract: A process for purifying a polyether, which comprises adding to a polyether (A) containing a first salt, water (B) and a compound (C) which is capable of reacting with an ion constituting the first salt to form a second salt which is essentially insoluble in the polyether (A), then removing water, followed by removing the second salt from the polyether (A).
    Type: Grant
    Filed: July 17, 1995
    Date of Patent: September 22, 1998
    Assignee: Asahi Glass Company Ltd.
    Inventors: Takashi Watabe, Hiroshi Hatano, Kazunori Chiba, Takao Doi, Toru Ueno, Etsuko Sakai, Minoru Yamada, Shinya Saiki, Hirotsugu Yamamoto, Toshihiko Higuchi
  • Patent number: 5438107
    Abstract: A condensed resin dispersion having fine particles of a condensed resin dispersed stably in a polyether polyol (c), the condensed resin being a reaction product of an aldehyde and a compound condensable with the aldehyde, or of their precondensate, wherein the fine particles of the condensed resin are fine condensed resin particles formed by the reaction and precipitation conducted in an isocyanate-modified polyether (b) obtained by reacting an organic polyisocyanate to a polyether (a) having at least one active hydrogen group reactive with an isocyanate group, or to such a polyether (a) and a low molecular weight active hydrogen-containing compound having at least one active hydrogen group, and having substantially no free isocyanate group.
    Type: Grant
    Filed: September 16, 1993
    Date of Patent: August 1, 1995
    Assignee: Asahi Glass Company Ltd.
    Inventors: Takao Doi, Noriko Itaya, Masami Yamashita
  • Patent number: 5434005
    Abstract: An aqueous composition comprising a carboxylate group-containing blocked polyurethane and water as essential components, wherein said polyurethane is a reaction product of a carboxylic acid (or carboxylate) group-containing polyoxyalkylene polyol containing at least 50% by weight of oxyethylene groups, with an average number of hydroxyl groups being more than 2 and having, on an average, from 0.005 to 0.8 --COOX group (X: a hydrogen atom or a cation) per molecule at the backbone chain terminals, a polyisocyanate having isocyanate groups in an amount stoichiometrically in excess of the hydroxyl groups of said polyol, and a blocking agent in an amount corresponding to the stoichiometrically excess amount of said polyisocyanate, and when X is a hydrogen atom, X is converted to a cation at an optional stage.
    Type: Grant
    Filed: March 12, 1993
    Date of Patent: July 18, 1995
    Assignee: Asahi Glass Company Ltd.
    Inventors: Tomiya Sugiura, Hideki Nakagawa, Takao Doi, Shigeyuki Kozawa
  • Patent number: 5344874
    Abstract: A process for producing a condensed resin dispersion, which comprises subjecting an aldehyde and a compound condensable with the aldehyde, or their precondensate, to a condensation reaction in a dispersion medium consisting essentially of water and/or an organic solvent, to precipitate fine condensed resin particles which hardly settle in said dispersion medium, and then replacing the water and/or the organic solvent by an active hydrogen-containing compound having at least two active hydrogen-containing groups reactive with isocyanate groups.
    Type: Grant
    Filed: July 8, 1991
    Date of Patent: September 6, 1994
    Assignee: Asahi Glass Company Ltd.
    Inventors: Takao Doi, Noriko Itaya, Masami Yamashita, Nobuaki Kunii