Patents by Inventor Kenji Fukunaga

Kenji Fukunaga 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: 20070275222
    Abstract: A porous insulating film comprising a highly heat resistant resin film having a fine porous structure with a mean pore size of 0.01-5 ?m in at least the center of the film, and a porosity of 15-80%. A laminate is prepared by forming a heat resistant adhesive layer or a conductive metal layer or an inorganic or metal substrate on one or both sides of the porous insulating film or by forming an inorganic or metal substrate on one side of the porous insulating film and a conductive metal layer on the other side.
    Type: Application
    Filed: May 23, 2007
    Publication date: November 29, 2007
    Inventors: Shigeru Yao, Yukihiko Asano, Shyusei Ohya, Kenji Fukunaga, Masayuki Kinouchi, Kenji Kawabata
  • Patent number: 7246440
    Abstract: A spindle motor is formed so as to support a pivot of a rotor by a pair of open bearings. The open bearings thus constructed will be less expensive and simple structures, so that a manufacturing cost thereof is reduced compared to a conventional spindle motor using a pair of ball bearings with shields. Accordingly, a low-cost spindle motor can be provided.
    Type: Grant
    Filed: July 8, 2003
    Date of Patent: July 24, 2007
    Assignee: Minebea Co., Ltd.
    Inventors: Rikuro Obara, Kenji Fukunaga
  • Publication number: 20070059517
    Abstract: A porous insulating film comprising a highly heat resistant resin film having a fine porous structure with a mean pore size of 0.01-5 ?m in at least the center of the film, and a porosity of 15-80%. A laminate is prepared by forming a heat resistant adhesive layer or a conductive metal layer or an inorganic or metal substrate on one or both sides of the porous insulating film or by forming an inorganic or metal substrate on one side of the porous insulating film and a conductive metal layer on the other side.
    Type: Application
    Filed: September 6, 2006
    Publication date: March 15, 2007
    Inventors: Shigeru Yao, Yukihiko Asano, Shyusei Ohya, Kenji Fukunaga, Masayuki Kinouchi, Kenji Kawabata
  • Publication number: 20060252768
    Abstract: A pyrimidone derivative having tau protein kinase 1 inhibitory activity which is represented by formula (I) or a salt thereof, or a solvate thereof or a hydrate thereof; useful for prventive and/or therapeutic treatment of diseass such as neurodegenerative diseases (e.g. Alzheimer disease); wherein Q represents CH or nitrogen atom; R represents a C1-C12 alkyl group; the ring of Formula (I): represents piperazine ring or piperidine ring; each X independently represents a C1-C8 alkyl group, an optionally partially hydrogenated C6-C10 aryl ring, an indan ring or the like; m represents an integer of 1 to 3; each independently represents a halogen atom, a hydroxy group, a cyano group, a C1-C6 alkyl group or the like; n represents an integer of 0 to 8; when X and Y or two Y groups are attached on the same carbon atom, they may combine to each other to form a C2-C6 alkylene group.
    Type: Application
    Filed: March 26, 2004
    Publication date: November 9, 2006
    Inventors: Kazutoshi Watanabe, Fumiaki Uehara, Shinsuke Hiki, Satoshi Yokoshima, Yoshihiro Usui, Masahiro Okuyama, Aya Shoda, Keiichi Aritomo, Toshiyuki Kohara, Kenji Fukunaga
  • Publication number: 20060231485
    Abstract: A process of producing an asymmetric membrane of multicomponent polyimide. The process includes the steps of (1) preparing a multicomponent polyimide blend solution by mixing a polyimide component A having a number-averaged polymerization index NA and a polyimide component B having a number-averaged polymerization index NB, wherein NA and NB satisfies equation 1: 2.35×NA?2.09<NB<450×NA?1.12??1 (2) subjecting the multicomponent polyimide blend solution to further polymerization and imidation reaction, and (3) causing a phase inversion in the resulting multicomponent polyimide blend solution to form an asymmetric membrane. The polyimide component A is raw materials of polyimide A containing a fluorine atom in the chemical structure thereof and/or a polymerization and imidation reaction product of the raw materials. The polyimide component B is raw materials of polyimide B and/or a polymerization and imidation reaction product of the raw materials.
    Type: Application
    Filed: January 20, 2006
    Publication date: October 19, 2006
    Inventors: Toshimune Yoshinaga, Kenji Fukunaga, Yoji Kase
  • Patent number: 7122929
    Abstract: If the motor housing 5 is manufactured with a resin, the housing 5 becomes possible to be manufactured by injection molding, so that the housing 5 can be intended to lower the manufacturing cost by a mass production. Further, the counter measures for insulation such as covering a copper wire 7 with an insulating tape, interposing an insulator to an opening 5a of the housing installing an insulating shim between the coil 6a and the housing 5 become unnecessary. As a result, it becomes possible to expect a cost down of the spindle motor due to the reduction of the cost of the parts for insulating members and the mounting processes. And, further, since a vibration transmitted from the rotor 1 through the bearing and a vibration caused by an electric switching of the stator 6 etc. are diminished due to elastic absorbing function of the housing 5, rotation noise of the spindle motor can be reduced.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: October 17, 2006
    Assignee: Minebea Co., Ltd.
    Inventors: Oswald Kuwert, Juergen Oelsch, Kenji Fukunaga
  • Publication number: 20060154004
    Abstract: A silica cake formed of easily dispersible precipitated silica having small primary particle size is provided, from which highly transparent silica dispersion can be effectively obtained. This silica cake is characterized by being a cake of precipitated silica having BET specific surface area of at least 220 m2/g, and when it is dispersed in ion-exchange water to provide an aqueous dispersion of the silica of 5% by weight in concentration and further diluted to reduce the silica concentration to 1.5% by weight, the dispersion having a light-scattering index (n-value) of at least 2. This silica cake can be obtained by simultaneously adding an alkali silicate and a mineral acid to a reaction liquid whose pH is being maintained at a fixed value within a range of 7.5-11.5 and whose temperature is being maintained at not lower than 90° C., whereby forming precipitated silica through their reaction, and separating said precipitated silica from the reaction liquid in wet state.
    Type: Application
    Filed: July 4, 2003
    Publication date: July 13, 2006
    Inventors: Hirokatsu Hayashi, Kenji Fukunaga, Kentaro Fukuda
  • Publication number: 20060155088
    Abstract: A crystalline polymer exhibiting crystal transition in the solid phase state, which satisfies the relationship defined by the formula 150>?Htr>1.6Ttr?3.5 (1) (wherein ?Htr represents the endotherm (J/g) accompanying crystal transition and Ttr represents the crystal transition temperature (° C.)). This crystalline polymer has a weight average molecular weight of 600 thousand or less and a crystal transition temperature (Ttr) of 67° C. or below. Since this crystalline polymer has a low phase transition temperature, a high heat of a crystal transition, and a high melting point, the potential utility thereof as a switching element or a thermal storage material used at around normal environment temperatures (20 to 50° C.) is high.
    Type: Application
    Filed: July 7, 2004
    Publication date: July 13, 2006
    Applicant: UBE Industries LTD.
    Inventors: Ryo Konishi, Yoichi Okubo, Kenji Fukunaga, Tadatoshi Aridomi
  • Patent number: 7027459
    Abstract: Printed circuit boards 11 to 11n are connected in a star-like configuration with a single packet processing IC 42, connected to a CPU 41, at its center, each printed circuit board being connected to the packet processing IC by a high-speed supervisory control line 21 having a sufficient transmission capacity to transfer therethrough transparent information and alarm transfer information as well as information from the central processing unit in packet form, and the transparent information and the alarm transfer information are communicated between the printed circuit boards via the high-speed supervisory control line and via the packet processing IC, with provisions made for the packet processing IC to detect a destination from the packet information received from the originating printed circuit board and to transmit the packet information to the terminating printed circuit board.
    Type: Grant
    Filed: February 25, 2002
    Date of Patent: April 11, 2006
    Assignee: Fujitsu Limited
    Inventors: Satoshi Fukui, Tatsuya Oku, Kenji Fukunaga
  • Patent number: 6977262
    Abstract: The present invention provides dihydropyrazolopyridine compounds represented by the formula (I): wherein each symbol is as defined in the specification, optically active forms thereof, and pharmaceutically acceptable salts thereof and hydrates thereof. The compounds of the present invention show a selective and strong inhibitory activity on glycogen synthase kinase-3 beta (GSK-3?), and are useful as medicaments for prevention and/or treatment of diabetes, diabetic complications and neurodegenerative diseases or as immunopotentiators.
    Type: Grant
    Filed: August 1, 2003
    Date of Patent: December 20, 2005
    Assignee: Mitsubishi Pharma Corporation
    Inventors: Toshiyuki Kohara, Kenji Fukunaga, Masatake Fujimura, Tokushi Hanano, Hirotaka Okabe
  • Publication number: 20050028349
    Abstract: A spindle motor is formed so as to support a pivot of a rotor by a pair of open bearings. The open bearings thus constructed will be less expensive and simple structures, so that a manufacturing cost thereof is reduced compared to a conventional spindle motor using a pair of ball bearings with shields. Accordingly, a low-cost spindle motor can be provided.
    Type: Application
    Filed: July 8, 2003
    Publication date: February 10, 2005
    Applicant: Minebea Co., Ltd.
    Inventors: Rikuro Obara, Kenji Fukunaga
  • Publication number: 20050025690
    Abstract: A process for wet pulverizing mesoporous silica particles while a surfactant exists in mesopores, and mesoporous silica particles having an average particle diameter of 1 ?m or less, wherein the volume of mesopores having a diameter of 2 to 50 nm is 0.7 mL/g or more and the geometric standard deviation of a mesopore distribution is 2.0 or less. In the above process, mesoporous silica particles having a particle diameter in a submicron order can be obtained at a high yield without causing the marked collapse of mesopores and can be produced efficiently by using an ordinary pulverizer and safely by using an aqueous medium. The mesoporous silica particles having an average particle diameter of 1 ?m or less are useful as an ink absorbent for ink jet recording paper, low-dielectric film, catalyst support, separating agent, adsorbent and medical carrier for medicines.
    Type: Application
    Filed: July 29, 2004
    Publication date: February 3, 2005
    Applicant: Tokuyama Corporation
    Inventors: Kentaro Fukuda, Kenji Fukunaga, Hiroya Yamashita
  • Publication number: 20040245867
    Abstract: If the motor housing 5 is manufactured with a resin, the housing 5 becomes possible to be manufactured by injection molding, so that the housing 5 can be intended to lower the manufacturing cost by a mass production. Further, the counter measures for insulation such as covering a copper wire 7 with an insulating tape, interposing an insulator to an opening 5a of the housing installing an insulating shim between the coil 6a and the housing 5 become unnecessary. As a result, it becomes possible to expect a cost down of the spindle motor due to the reduction of the cost of the parts for insulating members and the mounting processes. And, further, since a vibration transmitted from the rotor 1 through the bearing and a vibration caused by an electric switching of the stator 6 etc. are diminished due to elastic absorbing function of the housing 5, rotation noise of the spindle motor can be reduced.
    Type: Application
    Filed: July 8, 2004
    Publication date: December 9, 2004
    Applicant: MINEBEA CO., LTD.
    Inventors: Oswald Kuwert, Juergen Oelsch, Kenji Fukunaga
  • Publication number: 20040241419
    Abstract: A porous insulating film comprising a highly heat resistant resin film having a fine porous structure with a mean pore size of 0.01-5 &mgr;m in at least the center of the film, and a porosity of 15-80%. A laminate is prepared by forming a heat resistant adhesive layer or a conductive metal layer or an inorganic or metal substrate on one or both sides of the porous insulating film or by forming an inorganic or metal substrate on one side of the porous insulating film and a conductive metal layer on the other side.
    Type: Application
    Filed: February 25, 2004
    Publication date: December 2, 2004
    Applicant: Ube Industries, Ltd.
    Inventors: Shigeru Yao, Yukihiko Asano, Shyusei Ohya, Kenji Fukunaga, Masayuki Kinouchi, Kenji Kawabata
  • Publication number: 20040166297
    Abstract: A porous insulating film comprising a highly heat resistant resin film having a fine porous structure with a mean pore size of 0.01-5 &mgr;m in at least the center of the film, and a porosity of 15-80%. A laminate is prepared by forming a heat resistant adhesive layer or a conductive metal layer or an inorganic or metal substrate on one or both sides of the porous insulating film or by forming an inorganic or metal substrate on one side of the porous insulating film and a conductive metal layer on the other side.
    Type: Application
    Filed: February 25, 2004
    Publication date: August 26, 2004
    Applicant: Ube Industries, Ltd.
    Inventors: Shigeru Yao, Yukihiko Asano, Shyusei Ohya, Kenji Fukunaga, Masayuki Kinouchi, Kenji Kawabata
  • Patent number: 6713912
    Abstract: If the motor housing 5 is manufactured with a resin, the housing 5 becomes possible to be manufactured by injection molding, so that the housing 5 can be intended to lower the manufacturing cost by a mass production. Further, the counter measures for insulation such as covering a copper wire 7 with an insulating tape, interposing an insulator to an opening 5a of the housing installing an insulating shim between the coil 6a and the housing 5 become unnecessary. As a result, it becomes possible to expect a cost down of the spindle motor due to the reduction of the cost of the parts for insulating members and the mounting processes. And, further, since a vibration transmitted from the rotor 1 through the bearing and a vibration caused by an electric switching of the stator 6 etc. are diminished due to elastic absorbing function of the housing 5, rotation noise of the spindle motor can be reduced.
    Type: Grant
    Filed: January 20, 2000
    Date of Patent: March 30, 2004
    Assignee: Minebea Co., Ltd.
    Inventors: Oswald Kuwert, Juergen Oelsch, Kenji Fukunaga
  • Publication number: 20040052822
    Abstract: The present invention provides dihydropyrazolopyridine compounds represented by the formula (I): 1
    Type: Application
    Filed: August 1, 2003
    Publication date: March 18, 2004
    Inventors: Toshiyuki Kohara, Kenji Fukunaga, Masatake Fujimura, Tokushi Hanano, Hirotaka Okabe
  • Publication number: 20040036371
    Abstract: If the motor housing 5 is manufactured with a resin, the housing 5 becomes possible to be manufactured by injection molding, so that the housing 5 can be intended to lower the manufacturing cost by a mass production. Further, the counter measures for insulation such as covering a copper wire 7 with an insulating tape, interposing an insulator to an opening 5a of the housing installing an insulating shim between the coil 6a and the housing 5 become unnecessary. As a result, it becomes possible to expect a cost down of the spindle motor due to the reduction of the cost of the parts for insulating members and the mounting processes. And, further, since a vibration transmitted from the rotor 1 through the bearing and a vibration caused by an electric switching of the stator 6 etc. are diminished due to elastic absorbing function of the housing 5, rotation noise of the spindle motor can be reduced.
    Type: Application
    Filed: August 20, 2003
    Publication date: February 26, 2004
    Applicant: MINEBEA CO., LTD.
    Inventors: Oswald Kuwert, Juergen Oelsch, Kenji Fukunaga
  • Patent number: 6677389
    Abstract: Provided is a cationized silica dispersion prepared by dispersing dry processed silica and a cationic resin in a polar solvent, wherein a concentration of dissolved silicic acid at 25° C. is 200 ppm or less. This cationized silica dispersion does not substantially form coagulated matters when blended with a binder and therefore can advantageously be used for producing a coating composition such as a coating composition for forming a gas barrier layer, a corrosion preventive coating composition and a coating composition for ink jet recording paper.
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: January 13, 2004
    Assignee: Tokuyama Corporation
    Inventors: Kentaro Fukuda, Kenji Fukunaga, Hiroya Yamashita
  • Publication number: 20030129379
    Abstract: A porous insulating film comprising a highly heat resistant resin film having a fine porous structure with a mean pore size of 0.01-5 &mgr;m in at least the center of the film, and a porosity of 15-80%. A laminate is prepared by forming a heat resistant adhesive layer or a conductive metal layer or an inorganic or metal substrate on one or both sides of the porous insulating film or by forming an inorganic or metal substrate on one side of the porous insulating film and a conductive metal layer on the other side.
    Type: Application
    Filed: March 31, 2000
    Publication date: July 10, 2003
    Inventors: Shigeru Yao, Yukihiko Asano, Shyusei Ohya, Kenji Fukunaga, Masayuki Kinouchi, Kenji Kawabata