Patents by Inventor Yukio Ichikawa

Yukio Ichikawa 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).

  • Patent number: 7452387
    Abstract: A process for producing a polymer electrolyte for a nonaqueous battery by introducing 80 to 97 wt. % of vinylidene fluoride monomer and 3 to 20 wt % of at least one monomer copolymerizable with vinylidene fluoride monomer simultaneously all at once into a polymerization vessel, polymerizing the monomers to provide a vinylidene fluoride copolymer having polymerized units of the monomers and having an inherent viscosity of 1.5 to 10 dl/g, and impregnating the vinylidene fluoride copolymer with a nonaqueous electrolytic solution to provide a polymer electrolyte.
    Type: Grant
    Filed: May 19, 2004
    Date of Patent: November 18, 2008
    Assignee: Kureha Corporation
    Inventors: Takumi Katsurao, Katsuo Horie, Yukio Ichikawa, Aisaku Nagai
  • Patent number: 7200409
    Abstract: The invention provides an on-vehicle communication terminal that secures a report to a center and safety of a crew by providing short-range radio communication means in the on-vehicle communication terminal, separately configuring a mobile terminal provided with a part of the functions of a conventional on-vehicle terminal detached therefrom, and letting the crew who are escaping carry a mobile terminal. That is, an on-vehicle terminal (1) according to the invention includes location information detecting means (11), state sensor (14) for detecting an abnormal state and outputting the state information, first radio communication means (12) for transmitting predetermined data including state information, location information on a plurality of locations and a terminal ID to the information service center (2) on occurrence of a predetermined event, and second radio communication means (16) for providing radio communications between the on-vehicle terminal (1) and the mobile terminal (3).
    Type: Grant
    Filed: November 10, 2000
    Date of Patent: April 3, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yukio Ichikawa, Masaru Mizuno
  • Publication number: 20060024459
    Abstract: A crystalline aliphatic polyester alone or a laminate thereof is subjected to intense stretching under appropriately set stretching conditions to provide a stretched product with remarkably improved physical properties as represented by impact resistance and gas-barrier property inclusive of hot water resistance. The thus-obtained stretched product of aliphatic polyester is provided with increased orientation degree at not only amorphous parts but also crystalline parts as represented by (a) remarkably higher crystal melting point compared with the unstretched product, (b) an increase in sub-dispersion peak temperature according to dynamic viscoelasticity measurement, or (c) an increase in orientation degree according to wide-angle X-ray diffractometry and an increase in main dispersion peak temperature according to dynamic viscoelasticity measurement.
    Type: Application
    Filed: September 22, 2003
    Publication date: February 2, 2006
    Inventors: Daisuke Itoh, Takashi Sato, Yukio Ichikawa
  • Patent number: 6824927
    Abstract: A nonaqueous battery, such as a lithium ion battery, is formed from a polymer electrolyte comprising: a vinylidene fluoride copolymer comprises 80 to 97 wt. % of vinylidene fluoride monomer units and 3 to 20 wt. % of units of at least one monomer copolymerizable with the vinylidene fluoride monomer and has an inherent viscosity of 1.5 to 10 dl/g. The polymer electrolyte stably retains the nonaqueous electrolytic solution in a large amount and has excellent strength in this state.
    Type: Grant
    Filed: June 26, 2000
    Date of Patent: November 30, 2004
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Takumi Katsurao, Katsuo Horie, Yukio Ichikawa, Aisaku Nagai
  • Publication number: 20040209168
    Abstract: A nonaqueous battery, such as a lithium ion battery, is formed from a polymer electrolyte comprising: a vinylidene fluoride copolymer comprises 90 to 97 wt. % of vinylidene fluoride monomer units and 3 to 10 wt. % of units of at least one monomer copolymerizable with the vinylidene fluoride monomer and has an inherent viscosity of 1.5 to 10 dl/g. The polymer electrolyte stably retains the nonaqueous electrolytic solution in a large amount and has excellent strength in this state.
    Type: Application
    Filed: May 19, 2004
    Publication date: October 21, 2004
    Inventors: Takumi Katsurao, Katsuo Horie, Yukio Ichikawa, Aisaku Nagai
  • Publication number: 20030154019
    Abstract: When transmitting an on-road location on a digital map, an information provider transmits, as on-road location information, string of coordinates information representing the road shape of a road section including the on-road location having a predetermined length, additional information including at least one information item chosen from a group of the attribute information on the road including the road location and detailed information on the nodes in the road section, and relative information indicating the on-road location in the road section. Receiving party receiving this on-road location information performs shape matching to identify the road section on a digital map and uses relative data to identify the on-road location in this road section. The receiving party can identify the road shape with high accuracy even when only a small amount of string of coordinates data is available. This makes it possible to reduce the data transmission amount and identify an on-load location with high accuracy.
    Type: Application
    Filed: February 14, 2002
    Publication date: August 14, 2003
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shinya Adachi, Satoko Miyama, Naoki Yamada, Seiji Yoshida, Yukio Ichikawa, Takashi Kawasato, Hiroyuki Maeda
  • Patent number: 6404352
    Abstract: When a mobile terminal transmits information to an information service centre, the terminal stores positional data of plural points detected by a positional data detector such as a GPS satellite into a memory. The mobile terminal transmits an instant status data, positional data and the terminal ID when an emergency such as an accident, sudden illness occurs. At this time, an appropriate data compression is conducted responsive to a travelling status, such as using relative information, a data-(non-) existing-flag, and a number of points, so that the data volume to be transmitted can be reduced. As a result, the accuracy of positional data is maintained and yet the data transmission time is shortened.
    Type: Grant
    Filed: May 24, 2000
    Date of Patent: June 11, 2002
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yukio Ichikawa, Akifumi Miyano
  • Patent number: 6372388
    Abstract: A solid polymer electrolyte having improved ionic conductivity and adhesion with an electroconductive substrate and also remarkably enhanced heat resistance is formed with a vinylidene fluoride copolymer which contains 50-97 mol. % of vinylidene fluoride monomer and 0.1-5 mol. % of an unsaturated dibasic acid monoester or an epoxy group-containing vinyl monomer and further has been crosslinked, thereby improving the performances of a non-aqueous battery, such as a lithium ion battery.
    Type: Grant
    Filed: January 24, 2000
    Date of Patent: April 16, 2002
    Assignee: Kureha Kaguka Kogyo Kabushiki Kaisha
    Inventors: Takumi Katsurao, Katsuo Horie, Aisaku Nagai, Yukio Ichikawa
  • Publication number: 20020036883
    Abstract: An activated carbon for electric double layer capacitor whose rate of FS (filling swing) in an &agr;s-plot by the nitrogen adsorption method is at most 27 cm3/g STP. An activated carbon electrode formed with the activated carbon. An electric double layer capacitor equipped with the activated carbon electrodes as polarizable electrodes and having excellent durability.
    Type: Application
    Filed: December 15, 2000
    Publication date: March 28, 2002
    Inventors: Minoru Noguchi, Naohiko Oki, Manabu Iwaida, Tomoyuki Aida, Aisaku Nagai, Yukio Ichikawa
  • Patent number: 6262655
    Abstract: An emergency reporting apparatus for a vehicle includes a memory storing information representing a telephone number of an emergency report receiving center. Connection with the emergency report receiving center is implemented in response to the telephone number represented by the information in the memory. An emergency can be reported to the emergency report receiving center. The information in the memory can be updated to change the telephone number represented thereby.
    Type: Grant
    Filed: February 24, 2000
    Date of Patent: July 17, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kenji Yoshioka, Yukio Ichikawa, Arata Kurosawa
  • Patent number: 6054503
    Abstract: Disclosed herein are a plastic lens material having both excellent optical and mechanical properties and having a low specific gravity, and a production process for producing the plastic lens material having excellent various properties and a low specific gravity. The plastic lens material comprises a copolymer obtained by radical-polymerizing a reaction product of a component [A] containing a polyhydric alcohol obtained by subjecting a dimer and/or a trimer of a higher unsaturated fatty acid having 11 to 22 carbon atoms with a component [B] containing an isocyanate compound having a radical-polymerizable unsaturated bond in its molecule together with a copolymerizable monomer [C].
    Type: Grant
    Filed: December 8, 1998
    Date of Patent: April 25, 2000
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yukio Ichikawa, Teruo Sakagami
  • Patent number: 5554723
    Abstract: A process for the production of a poly(arylene thioether) containing phthalic anhydride groups wherein a dihalogen-substituted aromatic compound is reacted with an alkali metal sulfide in a polar organic solvent containing water to produce the poly(arylene thioether) is disclosed. This process comprises causing a monohalogen-substituted phthalic compound to exist in a polymerization reaction system, and controlling a ratio, a/b of the number of moles, a of the charged dihalogen-substituted aromatic compound to the number of moles, b of the charged alkali metal sulfide within a range of 0.8<a/b<1.
    Type: Grant
    Filed: March 19, 1993
    Date of Patent: September 10, 1996
    Assignee: Kureha Kagaku Kogyo K.K.
    Inventors: Naomitsu Nishihata, Shunzo Endo, Yukio Ichikawa, Takayuki Katto
  • Patent number: 5380783
    Abstract: A poly(arylene sulfide) resin composition in which the tendency of a poly(arylene sulfide) resin to cause metals making up molds, processing machinery, metal parts of inserts and the like to corrode has been inhibited, and which has good processability includes the poly(arylene sulfide) resin and, as a corrosion inhibitor, at least one substance selected from the group consisting of a metallic simple substance of molybdenum, oxoacids of molybdenum, alkali metal salts of the oxoacids of molybdenum, alkaline earth metal salts of the oxoacids of molybdenum, the ammonium salts of the oxoacids of molybdenum, the zinc salts of the oxoacids of molybdenum, a metallic simple substance of tungsten, oxoacids of tungsten, alkali metal salts of the oxoacids of tungsten, alkaline earth metal salts of the oxoacids of tungsten, the ammonium salts of the oxoacids of tungsten and the zinc salts of the oxoacids of tungsten. The corrosion inhibitor being incorporated in a proportion within a range of 0.
    Type: Grant
    Filed: August 30, 1993
    Date of Patent: January 10, 1995
    Assignee: Kureha Kagaku Kogyo K.K.
    Inventors: Yoshikatsu Satake, Toshihiko Ono, Yoshinobu Itoh, Yukio Ichikawa
  • Patent number: 5380819
    Abstract: A resin composition includes a poly(arylene thioether) and a polyamide. At least part of the poly(arylene thioether) consists of a poly(arylene thioether) containing phthalic anhydride groups.
    Type: Grant
    Filed: March 19, 1993
    Date of Patent: January 10, 1995
    Assignee: Kureha Kagaku Kogyo K.K.
    Inventors: Naomitsu Nishihata, Yukio Ichikawa, Takayuki Katto
  • Patent number: 5342654
    Abstract: A method for roughening the surface of a resin molded article to make it susceptible to metallizing is disclosed, comprising contacting a resin molded article at least the surface of which to be toughened mainly comprises a block copolymer comprising 100 parts by weight of a polyphenylene sulfide resin and from 30 to 100 parts by weight of a polyphenylene sulfide ketone resin with a solvent capable of dissolving a polyphenylene sulfide ketone resin more than a polyphenylene sulfide resin.
    Type: Grant
    Filed: June 18, 1992
    Date of Patent: August 30, 1994
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Tomoyoshi Koizumi, Yukio Ichikawa
  • Patent number: 5326593
    Abstract: A method for roughening the surface of a resin molded article to make it susceptible to metallizing is disclosed, including contacting a resin molded article at least the surface portion of which to be roughened mainly includes a block copolymer including 100 parts by weight of a polyarylene sulfide component block and from 100 to 200 parts by weight of a polyarylene sulfide ketone component block with a solvent capable of dissolving a polyarylene sulfide ketone more than a polyarylene sulfide.
    Type: Grant
    Filed: June 11, 1992
    Date of Patent: July 5, 1994
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Tomoyoshi Koizumi, Yukio Ichikawa
  • Patent number: 5187257
    Abstract: Disclosed herein is a crystallized, thin-wall container which is excellent in heat-resistance, oil-resistance, chemical stability under high temperature and high humidity and gas impermeability, is particularly suitable for heating foodstuffs packaged in it in electronic range, electric oven, etc. and is obtained by thermoforming a substantially amorphous sheet which has a crystallinity index of below 15% and an elongation of not less than 100% at room temperature and is obtained from a poly(arylene sulfide) which has a substantially linear structure, has not less thant 70 wt % of a repeating unit of ##STR1## and a logarithmic viscosity number of 0.2 to 1.0 in a solution of 1-chloronaphthalene (concentration of 0.4 g/dl at a temperature of 208.degree. C.) and a process for producing the container.
    Type: Grant
    Filed: June 22, 1992
    Date of Patent: February 16, 1993
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Takayuki Katto, Yukio Ichikawa, Toshio Enoki, Kenichi Katase
  • Patent number: 5085819
    Abstract: Heat-resistant resin composition including (A) 100 parts by weight of a poly(arylene sulfide) of a substantially linear structure containing 50% by weight or higher or recurring units of the formula ##STR1## and a logarithmic viscosity number of 0.1 to 1.0 dl/g; (B) from 0.01 to less than 25 parts by weight of a melt-stable poly(arylene thioether-ketone) having predominant recurring units of the formula ##STR2## wherein the --CO-- and --S-- are in the para position to each other, and having a melting point of 310.degree.-380.degree. C., a residual melt crystallization enthalpy of at least 10 J/g, a melt crystallization temperature of at least 210.degree. C. and a reduced viscosity of 0.2 to 2 dl/g; and (C) at least one of fibrous fibers and/or at least one of inorganic fillers in a proportion of 0 to 400 parts by weight per 100 parts by weight of the resin component including said poly(arylene sulfide) and said poly(arylene thioether-ketone).
    Type: Grant
    Filed: May 19, 1989
    Date of Patent: February 4, 1992
    Assignee: Kureha Kabaku Kogyo K.K.
    Inventors: Yoshikatsu Satake, Takashi Kaneko, Yutaka Kobayashi, Yukio Ichikawa, Yo Iizuka, Makoto Fukuda, Toshio Enoki, Takayuki Katto, Yasuo Sakaguchi, Zenya Shiiki
  • Patent number: 4935473
    Abstract: The present invention discloses a composition comprising a mixture containing 100 parts by weight of substantially linear polyphenylene sulfide which is treated with an aqueous solution of an acid or a salt of a strong acid and a weak base and which has not less than 70 mol % of a repeating unit of ##STR1## 0.05 to 5 parts by weight of at least one aminoalkoxysilane compound and, if necessary, 0.01 to 3 parts by weight of a releasing agent, the mixture being kneaded under heating at a temperature higher than the melting point of the polyphenylene sulfide, said composition exhibiting excellent impact strength and weld strength and providing molded product with small amount of flash generated during molding. The invention also discloses a composition which further comprises a fibrous reinforcing material and/or an inorganic powdered or granular filler, according to necessity, as well as disclosing a method of producing said composition.
    Type: Grant
    Filed: December 2, 1988
    Date of Patent: June 19, 1990
    Assignees: Kureha Kagaku Kogyo Kabushiki Kaisha, Polyplastics Co., Ltd.
    Inventors: Makoto Fukuda, Yukio Ichikawa, Takayuki Katto, Toshikatsu Nitoh
  • Patent number: 4895893
    Abstract: Heat-resistant resin composition comprising (A) 100 parts by weight of a poly(arylene sulfide) of a substantially linear structure containing 50% by weight or higher of recurring units of the formula ##STR1## and a logarithmic viscosity number of 0.1 to 1.0 dl/g; (B) from 0.01 to less than 25 parts by weight of a melt-stable poly(arylene thioether-ketone) having predominant recurring units of the formula ##STR2## wherein the --CO-- and --S-- are in the para position to each other, and having a melting point of 310.degree.-380.degree. C., a residual melt crystallization enthalpy of at least 10 J/g, a melt crystallization temperature of at least 210.degree. C. and a reduced viscosity of 0.2 to 2 dl/g; and (C) at least one of fibrous fibers and/or at least one of inorganic fillers in a proportion of 0 to 400 parts by weight per 100 parts by weight of the resin component comprising said poly(arylene sulfide) and said poly(arylene thioether-ketone).
    Type: Grant
    Filed: May 12, 1988
    Date of Patent: January 23, 1990
    Assignee: Kureha Kagaku Kogyo K.K.
    Inventors: Yoshikatsu Satake, Takashi Kaneko, Yutaka Kobayashi, Yukio Ichikawa, Yo Iizuka, Makoto Fukuda, Toshio Enoki, Takayuki Katto, Yasuo Sakaguchi, Zenya Shiiki