Patents by Inventor Masaaki Ikeda

Masaaki Ikeda 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: 20030107517
    Abstract: In an antenna beam control system, in which four antenna elements are connected to respective first signal processing circuits to which phase shift circuits are connected respectively, output signals from the phase shift circuits are combined by a combiner, a combined signal is processed by a second signal processing circuit, and phase shift amounts in said phase shift circuits are controlled in accordance with strength information of the signal processed in the second signal processing circuit such that a strength of the signal becomes optimum, characterized in that five combinations of binary signals by means of which five antenna beam patterns including four antenna beam patterns each of which is obtained by setting a phase shift amount of respective one of at least four phase shift circuits corresponding to said at least four antenna elements to 180° and setting phase shift amounts of the remaining phase shift circuits to 0° and one antenna beam pattern which is obtained by setting phase shift amo
    Type: Application
    Filed: December 10, 2001
    Publication date: June 12, 2003
    Applicant: TDK CORPORATION
    Inventors: Masaaki Ikeda, Toshihisa Nakamura, Noriaki Sato
  • Publication number: 20030016323
    Abstract: To prevent decline of visibility due to fluctuation in the number of unit reflection regions in a reflective display. In a reflective display comprising a liquid crystal display, and a reflective plate for reflecting the light passing through the liquid crystal display, the liquid crystal display has plural openings, the reflective plate has plural unit reflection regions, and the array pitch r of the unit reflection regions and the array pitch p of the openings of the display satisfy the relation of r=p/m (where m is a natural number).
    Type: Application
    Filed: July 12, 2002
    Publication date: January 23, 2003
    Inventors: Masaaki Ikeda, Akihiro Funamoto, Shigeru Aoyama
  • Patent number: 6492475
    Abstract: The present invention relates to an ethylene-&agr;-olefin copolymer; a composition thereof; a film thereof; a polar group-containing resin material; and productions and use of the ethylene-&agr;-olefin copolymer. The ethylene-&agr;-olefin copolymer of the present invention is characterized in satisfying the following conditions (A) to (E): (A) a density in the range of 0.92 to 0.96 g/cm3; (B) a melt flow rate (MFR) in the range of 0.01 to 200 g/10 min; (C) a molecular weight distribution (Mw/Mn) in the range of 1.5 to 5.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: December 10, 2002
    Assignee: Japan Polyolefins Co., Ltd.
    Inventors: Toshiaki Egashira, Reiji Higuchi, Kazuyuki Sakamoto, Kimiya Miyoshi, Masahiro Wakayama, Tatsuo Yamaguchi, Fumio Asada, Sinji Miwa, Kenichi Hiraki, Masaaki Ikeda, Yoshimi Shimizu
  • Patent number: 6479590
    Abstract: The present invention relates to a resin material for an electrical insulating material, an electrical insulating material and electric wire and cable using the same. A resin material for an electrical insulating material according to present invention is characterized in that the resin component thereof comprises an ethylene &agr;-olefin copolymer (A) which satisfies specific conditions, such as a density of 0.92˜0.96 g/cm3, a melt flow rate (MFR) of 0.01˜200 g/10 minutes, a molecular weight distribution (Mw/Mn) of 1.5˜5.0, and possessing only one peak in terms of the number of peaks observed in an elution temperature-eluted amount curve as measured by the temperature raising elution fractionation (TREF) method, etc.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: November 12, 2002
    Assignee: Japan Polyolefins Co., Ltd.
    Inventors: Masaaki Ikeda, Yoshimi Shimizu
  • Patent number: 6475590
    Abstract: The present invention relates to an aminium salt or diimonium salt compound that is appropriate for use, for examples, in an optical recording medium to get the good characteristics in regeneration and storage stability as well as an infrared ray screening filter to get the excellent light fastness and heat fastness; and the use thereof. The aminium salt or diimonium salt compound comprises an aminium cation represented by the formula (1) as described below or a diimonium cation represented by the formula (2) as described below: (In the formula, m is an integer of 1 or 2; the two nitrogen atoms (quaternary nitrogen atoms in Formula (2)) bound to the ring A in Formula (1) or Formula (2) bind to the four B phenyl groups to whose 4-positions the optionally substituted four amino groups are substituted; and at least one of said four amino groups has a cyanoalkyl group as the substituent) with an anion.
    Type: Grant
    Filed: December 4, 2000
    Date of Patent: November 5, 2002
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Yasuyuki Kitayama, Masaaki Ikeda, Masao Ohnishi
  • Publication number: 20020125588
    Abstract: There is provided a manufacturing method of an optical device having a micro-asperity pattern that has various kinds of accurate three-dimensional shapes and is realized as thin films. A substrate is coated with a resin thin film made of a photosensitive resin, and the temperature of the resin thin film is controlled so as to be lower than the photosensitivity extinction temperature of the resin thin film. A micro-asperity pattern of a stamper is pressed against the resin thin film when the resin thin film is in a softened or melted state by pressurizing means, whereby a micro-asperity pattern is formed on the surface of the resin thin film.
    Type: Application
    Filed: March 6, 2002
    Publication date: September 12, 2002
    Inventors: Masaaki Ikeda, Akihiro Funamoto, Motohiko Matsushita, Shigeru Aoyama
  • Publication number: 20020121339
    Abstract: A method for manufacturing an optical device is disclosed. The method includes coating a substrate with a resin thin layer, wherein temperature of the resin thin layer is controlled lower than a polymerization reaction starting temperature thereof and the resin is not substantially polymerized, heating the resin thin layer to a temperature higher than polymerization reaction starting temperature and glass-transition temperature but lower than a thermal decomposition starting temperature of the resin so that the resin thin layer is polymerized on the substrate to form a resin thin film thereon, pressing a stamp having an inverted micro-asperity pattern against the resin thin film such that a micro-asperity pattern is formed on a surface of the resin thin film; cooling the resin thin film to a temperature lower than the glass-transition temperature; and separating the stamp from the resin thin film.
    Type: Application
    Filed: February 27, 2002
    Publication date: September 5, 2002
    Inventors: Masaaki Ikeda, Akihiro Funamoto, Motohiko Matsushita, Shigeru Aoyama
  • Publication number: 20020098257
    Abstract: A cylindrical embossment roll whose outer circumferential surface is formed with a micro-asperity pattern is prepared. A substrate is coated with a thin resin film. The substrate is held by a transfer stage, and a micro-asperity pattern is formed on the thin resin film by pressing the outer circumferential surface of the embossment roll against the thin resin film with a pressurizing mechanism while rolling the embossment roll on the thin resin film.
    Type: Application
    Filed: January 22, 2002
    Publication date: July 25, 2002
    Inventors: Masaaki Ikeda, Akihiro Funamoto, Motohiko Matsushita, Shigeru Aoyama
  • Patent number: 6423808
    Abstract: A laminate containing a polyolefin resin composition containing ethylene-&agr;-olefin copolymer having: (A) a density d of 0.86 to 0.96 g/cm3; (B) a melt flow rate MFR of 0.01 to 200 g/10 min; (C) a molecular weight distribution Mw/Mn of 1.5 to 4.5; (D) a composition distribution parameter Cb of 1.08 to 2.00; and (E) an orthodichlorobenzene-soluble content X (wt %), at 25° C. a density of d (g/cm3) and a melt flow rate MFR (g/10 min) satisfying that: (i) when the density (d) and the melt flow rate MFR satisfy relationship (I): d−0.008×log MFR≧0.93  (I)  the orthodichlorobenzene-soluble content X satisfies relationship (II): X<2.0  (II) (ii) when the density d and the melt flow rate MFR satisfy relationship (III): d−0.008×log MFR<0.93  (II)  the orthodichlorobenzene-soluble content X satisfies relationship (IV): X<9.8×103×(0.9300−d+0.008×log MFR)2+2.
    Type: Grant
    Filed: August 22, 2000
    Date of Patent: July 23, 2002
    Assignee: Japan Polyolefins Co., Ltd.
    Inventors: Hideo Watanabe, Masahiko Sato, Masaaki Ikeda, Takaaki Hattori, Yoshihiro Hatakeyama, Naoki Miwa, Tatsuyuki Kamiya, Hisao Sakuma, Yuka Umeshima
  • Publication number: 20020085150
    Abstract: In a reflection type display apparatus in which a forward lightening apparatus is arranged in front of a reflection type display panel, lowering of contrast occurred when the forward lightening apparatus is turned ON is prevented. In this reflection type display apparatus, the forward lightening apparatus is adhered via an adhesive layer to a front surface of the reflection type display panel having a reflection plane. The reflection plane is constituted by a large number of first very fine patterns having a spherical shape, and a large number of second very fine patterns whose front surfaces are inclined. External light which is vertically entered into the front surfaces is reflected by the first patterns, and thereafter, the reflected external light is projected as a display along a forward direction. The forward lightening apparatus is arranged by providing a light source on a side surface of a light conducting plate having a wedge shape.
    Type: Application
    Filed: December 27, 2001
    Publication date: July 4, 2002
    Inventors: Akihiro Funamoto, Motohiko Matsushita, Masayuki Shinohara, Masaaki Ikeda, Shigeru Aoyama
  • Patent number: 6379226
    Abstract: To provide a method for storing a carrier (3) for polishing a silicon wafer, which can store the carrier (3) in a manner to reduce scratches on the silicon wafer. The method includes storing a carrier (3) for use in polishing a silicon wafer completely immersed in a liquid. At least a substantial portion of the liquid is deionized water.
    Type: Grant
    Filed: June 20, 2001
    Date of Patent: April 30, 2002
    Assignee: MEMC Electronic Materials, Inc.
    Inventors: Masaaki Ikeda, Ichiro Yoshimura
  • Publication number: 20020030725
    Abstract: An image forming apparatus comprises a photoreceptor having an image carrying surface, an exposing device to imagewise expose the image carrying surface to form a latent image, and a developing device to develop the latent image to form a toner image on the image carrying surface, wherein the exposing device is composed of a light source to emit a light beam, a deflector to deflect the light beam so as to form a scanning line with the light beam on the image carrying surface, a cylindrical lens provided between the deflector and the image carrying surface and to focus the light beam on the image carrying surface, and an adjusting mechanism to adjust an inclination of scanning line and to adjust variance in magnification of an image on the scanning line.
    Type: Application
    Filed: September 7, 2001
    Publication date: March 14, 2002
    Inventors: Yuji Okugawa, Naoki Tajima, Masaaki Ikeda, Masahiro Shigetomi
  • Publication number: 20010055948
    Abstract: Receiving apparatus for receiving satellite broadcasting electric wave to be mounted mobile vehicle being realized at low cost and not influence by the weather etc. The apparatus is provided with an antenna of which directivity pattern can be varied, and by a geomagnetism sensor mechanically coupled with said antenna to detect present orientation of the antenna, and comprising antenna controlling means by which the directivity pattern of the antenna is directed towards objective broadcasting satellite based on said detected orientation output. When an electric wave from a gap-filler station is to be received, the antenna is controlled to become non-directivity pattern automatically. For the antenna, a microstrip patch antenna having a plurality of conductive patches arranged in a plane is used.
    Type: Application
    Filed: April 9, 2001
    Publication date: December 27, 2001
    Applicant: TDK CORPORATION
    Inventors: Masaaki Ikeda, Noriaki Sato, Toshihisa Nakamura
  • Patent number: 6249305
    Abstract: An image forming apparatus is provided which includes an image carrying member, a plurality of charging devices for charging the image carrying member, a plurality of laser exposing units for scanning the charged image carrying member with laser beams so as to form latent images at a predetermined position on the image carrying member, a plurality of developing devices for developing the latent images so as to form toner images, and a transfer section for transferring the toner images onto a sheet. The plurality of laser exposing units are vertically arranged and fixed to each other as a single body so that each laser beam of the laser exposing units is parallel to another laser beam with a predetermined interval.
    Type: Grant
    Filed: May 12, 1998
    Date of Patent: June 19, 2001
    Assignee: Konica Corporation
    Inventors: Takayuki Miyamoto, Masaaki Ikeda, Yuji Okugawa, Hajime Tanaka, Naoki Tajima, Masahiro Shigetomi
  • Patent number: 6162871
    Abstract: A polyolefin resin composition containing an ethylene-.alpha.-olefin copolymer having: (A) a density d of 0.86 to 0.96 g/cm.sup.3 ; (B) a melt flow rate MFR of 0.01 to 200 g/10 min; (C) a molecular weight distribution Mw/Mn of 1.5 to 4.5; (D) a composition distribution parameter Cb of 1.08 to 2.00; and (E) an orthodichlorobenzene-soluble content X (wt %), at 25.degree. C. a density of d (g/cm.sup.3) and a melt flow rate MFR (wt %) satisfying that: (i) when the density (d) and the melt flow rate MFR satisfy relationship (I):d-0.008.times.logMFR.gtoreq.0.93 (I)the orthodichlorobenzene-soluble content X satisfies relationship (II):X<2.0 (II)(ii) when the density d and the melt flow rate MFR satisfy relationship (III):d-0.008.times.logMFR<0.93 (III)the orthodichlorobenzene-soluble content X satisfies relationship (IV):X<9.8.times.10.sup.3 .times.(0.9300-d+0.008.times.logMFR).sup.2 +2.
    Type: Grant
    Filed: October 5, 1998
    Date of Patent: December 19, 2000
    Assignee: Nippon Petrochemical Co., Ltd.
    Inventors: Hideo Watanabe, Masahiko Sato, Masaaki Ikeda, Takaaki Hattori, Yoshihiro Hatakeyama, Naoki Miwa, Tatsuyuki Kamiya, Hisao Sakuma, Yuka Umeshima
  • Patent number: 6087286
    Abstract: A dielectric material and a dielectric device is obtained using a dielectric ceramic composition which can be sintered at a temperature of up to 950.degree. C. and having as a main phase a composite oxide of Pb, Ca, W, Fe and Nb, said composite oxide having a composition represented by (Pb.sub.1-x Ca.sub.x O).sub.y (W.sub.s Fe.sub.t Nb.sub.u)O.sub.z where x, y, s, t, u, and z are 0.3.ltoreq..times..ltoreq.0.9, 1.000.ltoreq.y<1.020, 1.03.ltoreq.(2s+u)/t.ltoreq.1.40, s+t+u=1, 0.05.ltoreq.s.ltoreq.0.20, 0.2.ltoreq.u.ltoreq.0.49 and z=3s+5/2u+3/2t. The composition can be co-sintered with silver, has low loss and a high dielectric constant, and makes it possible to prevent the entrance of a plating bath into a device.
    Type: Grant
    Filed: December 16, 1997
    Date of Patent: July 11, 2000
    Assignee: TDK Corporation
    Inventors: Masaaki Ikeda, Takeshi Takahashi, Makoto Kobayashi
  • Patent number: 5988363
    Abstract: A support rail for a table top chain abraded powder or similar substances which intervene between top plates and support rails of a table top chain. A support rail is secured to a conveyor frame by means of threaded screws so as to support both sides at the lower surface of a top plate of a table top chain. The support rail has a plurality of circular concave recesses formed on the sliding surface relative to the top plate in a zigzag pattern for trapping obstacles such as abraded powder, liquid or lubricant on the sliding surface. The concave recess does not penetrate through the surface to the rear face, but serves to accumulate the abraded powder or similar therein.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: November 23, 1999
    Assignee: Tsubakimoto Chain Co.
    Inventors: Toshio Takahashi, Katsutoshi Shibayama, Masaaki Ikeda
  • Patent number: 5954190
    Abstract: A chain includes resin links 1 and resin link pins which are formed by molding a mixture of polyacetal as resin material and 0.1 to 5.0% by weight of an inorganic antibacterial agent containing silver such as silver phosphate salt glass, which antibacterial agent is dispersed homogeneously in the resin material. The growth of bacteria and fungi on a chain for conveying products such as food and medicines is suppressed.
    Type: Grant
    Filed: June 10, 1996
    Date of Patent: September 21, 1999
    Assignee: Tsubakimoto Chain Co.
    Inventors: Toshio Takahashi, Koji Tanaka, Katsutoshi Shibayama, Masaaki Ikeda
  • Patent number: 5874513
    Abstract: An ethylene-.alpha.-olefin copolymer having: (A) a density d of 0.86 to 0.96 g/cm.sup.3 ; (B) a melt flow rate MFR of 0.01 to 200 g/10 min; (C) a molecular weight distribution Mw/Mn of 1.5 to 4.5; (D) a composition distribution parameter Cb of 1.08 to 2.00; and (E) an orthodichlorobenzene-soluble content X (wt %), at 25.degree. C. a density of d (g/cm.sup.3) and a melt flow rate MFR (g/10 min) satisfying that: (i) when the density (d) and the melt flow rate MFR satisfy relationship (I):d-0.008.times.logMFR.gtoreq.0.93 (I)the orthodichlorobenzene-soluble content X satisfies relationship (II):X<2.0 (II)(ii) when the density d and the melt flow rate MFR satisfy relationship (III):d-0.008.times.logMFR<0.93 (III)the orthodichlorobenzene-soluble content X satisfies relationship (IV):X<9.8.times.10.sup.3 .times.(0.9300-d+0.008.times.logMFR).sup.2 +2.
    Type: Grant
    Filed: March 28, 1996
    Date of Patent: February 23, 1999
    Assignee: Nippon Petrochemicals Co., Ltd.
    Inventors: Hideo Watanabe, Masahiko Sato, Masaaki Ikeda, Takaaki Hattori, Yoshihiro Hatakeyama, Naoki Miwa, Tatsuyuki Kamiya, Hisao Sakuma, Yuka Umeshima
  • Patent number: 5859242
    Abstract: The present invention relates to a process for producing a dioxazine compound represented by the formula (1) which comprises carrying out a ring closure reaction of a compound represented by the formula (2) in the presence of a dioxazine derivative of the formula (3), colored materials containing this dioxazine compound, and dioxazine compounds having a plate-like crystal form: ##STR1##
    Type: Grant
    Filed: September 25, 1997
    Date of Patent: January 12, 1999
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Masaaki Ikeda, Junko Yoshioka, Masao Onishi