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).
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Patent number: 7452387Abstract: 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: GrantFiled: May 19, 2004Date of Patent: November 18, 2008Assignee: Kureha CorporationInventors: Takumi Katsurao, Katsuo Horie, Yukio Ichikawa, Aisaku Nagai
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Patent number: 7200409Abstract: 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: GrantFiled: November 10, 2000Date of Patent: April 3, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yukio Ichikawa, Masaru Mizuno
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Publication number: 20060024459Abstract: 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: ApplicationFiled: September 22, 2003Publication date: February 2, 2006Inventors: Daisuke Itoh, Takashi Sato, Yukio Ichikawa
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Patent number: 6824927Abstract: 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: GrantFiled: June 26, 2000Date of Patent: November 30, 2004Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Takumi Katsurao, Katsuo Horie, Yukio Ichikawa, Aisaku Nagai
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Publication number: 20040209168Abstract: 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: ApplicationFiled: May 19, 2004Publication date: October 21, 2004Inventors: Takumi Katsurao, Katsuo Horie, Yukio Ichikawa, Aisaku Nagai
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Publication number: 20030154019Abstract: 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: ApplicationFiled: February 14, 2002Publication date: August 14, 2003Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Shinya Adachi, Satoko Miyama, Naoki Yamada, Seiji Yoshida, Yukio Ichikawa, Takashi Kawasato, Hiroyuki Maeda
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Patent number: 6404352Abstract: 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: GrantFiled: May 24, 2000Date of Patent: June 11, 2002Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yukio Ichikawa, Akifumi Miyano
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Patent number: 6372388Abstract: 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: GrantFiled: January 24, 2000Date of Patent: April 16, 2002Assignee: Kureha Kaguka Kogyo Kabushiki KaishaInventors: Takumi Katsurao, Katsuo Horie, Aisaku Nagai, Yukio Ichikawa
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Publication number: 20020036883Abstract: 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: ApplicationFiled: December 15, 2000Publication date: March 28, 2002Inventors: Minoru Noguchi, Naohiko Oki, Manabu Iwaida, Tomoyuki Aida, Aisaku Nagai, Yukio Ichikawa
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Patent number: 6262655Abstract: 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: GrantFiled: February 24, 2000Date of Patent: July 17, 2001Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kenji Yoshioka, Yukio Ichikawa, Arata Kurosawa
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Patent number: 6054503Abstract: 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: GrantFiled: December 8, 1998Date of Patent: April 25, 2000Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Yukio Ichikawa, Teruo Sakagami
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Patent number: 5554723Abstract: 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: GrantFiled: March 19, 1993Date of Patent: September 10, 1996Assignee: Kureha Kagaku Kogyo K.K.Inventors: Naomitsu Nishihata, Shunzo Endo, Yukio Ichikawa, Takayuki Katto
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Patent number: 5380783Abstract: 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: GrantFiled: August 30, 1993Date of Patent: January 10, 1995Assignee: Kureha Kagaku Kogyo K.K.Inventors: Yoshikatsu Satake, Toshihiko Ono, Yoshinobu Itoh, Yukio Ichikawa
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Patent number: 5380819Abstract: 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: GrantFiled: March 19, 1993Date of Patent: January 10, 1995Assignee: Kureha Kagaku Kogyo K.K.Inventors: Naomitsu Nishihata, Yukio Ichikawa, Takayuki Katto
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Patent number: 5342654Abstract: 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: GrantFiled: June 18, 1992Date of Patent: August 30, 1994Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Tomoyoshi Koizumi, Yukio Ichikawa
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Patent number: 5326593Abstract: 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: GrantFiled: June 11, 1992Date of Patent: July 5, 1994Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Tomoyoshi Koizumi, Yukio Ichikawa
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Patent number: 5187257Abstract: 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: GrantFiled: June 22, 1992Date of Patent: February 16, 1993Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Takayuki Katto, Yukio Ichikawa, Toshio Enoki, Kenichi Katase
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Patent number: 5085819Abstract: 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: GrantFiled: May 19, 1989Date of Patent: February 4, 1992Assignee: 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
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Patent number: 4935473Abstract: 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: GrantFiled: December 2, 1988Date of Patent: June 19, 1990Assignees: Kureha Kagaku Kogyo Kabushiki Kaisha, Polyplastics Co., Ltd.Inventors: Makoto Fukuda, Yukio Ichikawa, Takayuki Katto, Toshikatsu Nitoh
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Patent number: 4895893Abstract: 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: GrantFiled: May 12, 1988Date of Patent: January 23, 1990Assignee: 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