Patents by Inventor Tetsuo Shimizu

Tetsuo Shimizu 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: 6552127
    Abstract: A thermoplastic resin composition comprising a blend obtainable by blending 0.1 to 99% by weight of (a) a fluorine-containing polymer having a number-average molecular weight of 2000 to 1000000 and having hydroxy group or epoxy group at least at one of end portions of a main chain and side chain of the polymer, and 1 to 99.9% by weight of (b) a heat resisting thermoplastic resin having a crystalline melting point or glass transition temperature of not less than 150° C.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: April 22, 2003
    Assignee: Daikin Industries, Ltd.
    Inventors: Tetsuo Shimizu, Yoshihisa Yamamoto, Seitaro Yamaguchi, Nobuhiko Tsuda, Noriyasu Yamane, Takafumi Yamato, Masahiro Kumegawa, Takayuki Araki
  • Publication number: 20030049454
    Abstract: Composite materials for cooking apparatuses which are produced by applying, to a substrate, a material comprising a fluorine-containing polymer having an excellent adhesive property to the substrate without necessitating complicated steps and are excellent in heat resistance, non-sticking property, stain-proofing property, water- and oil-repelling property, stain-removing property, chemical resistance, rust-preventing property, antibacterial property, resistance to energy ray and abrasion resistance. The composite materials for cooking apparatuses are produced by applying, to the substrate, the material comprising a fluorine-containing ethylenic polymer having functional group which is prepared by copolymerizing (a) 0.05 to 30 % by mole of at least one of fluorine-containing ethylenic monomers having at least one functional group selected from the group consisting of hydroxyl, carboxyl, a carboxylic salt group, a carboxylic ester group and epoxy, and (b) 70 to 99.
    Type: Application
    Filed: September 3, 1999
    Publication date: March 13, 2003
    Inventors: TAKAYUKI ARAKI, YOSHITO TANAKA, MASAHIRO KUMEGAWA, NORITOSHI OKA, HISATO SANEMASA, TETSUO SHIMIZU
  • Patent number: 6531557
    Abstract: A modified polytetrafluoroethylene fine powder containing agglomerates of colloidal particles with an average particle size of from 0.05 to 0.5 &mgr;m which comprise a copolymer of tetrafluoroethylene and an olefin-monomer represented by X(CF2)nOCF═CF2 in which X is a hydrogen atom, a fluorine atom or a chlorine atom, and n is an integer of 1 to 6, and/or C3F7(OCF2CF2CF2)m[OCF(CF3)CF2]pOCF═CF2 in which m and p are independently an integer of 0 to 4, provided that the sum of m and p is not 0 (zero), a content of the olefin monomer being from 0.02 to 0.3 wt. %, wherein the copolymer has a molecular weight distribution Mw/Mn of from 1.5 to 4.5 and a standard specific gravity of from 2.135 to 2.175. This modified polytetrafluoroethylene has good paste extrudability, and provides molded articles having good mechanical properties, in particular, pressure resistance.
    Type: Grant
    Filed: March 12, 1999
    Date of Patent: March 11, 2003
    Assignee: Daikin Industries Ltd.
    Inventors: Kazutaka Hosokawa, Yoshinori Nanba, Takahisa Aoyama, Tetsuo Shimizu
  • Publication number: 20030008151
    Abstract: A heat resistant scattering-preventing composite material is produced by applying, to a substrate, a material comprising a fluorine-containing ethylenic polymer having functional group which is prepared by copolymerizing (a) 0.05 to 30% by mole of at least one of fluorine-containing ethylenic monomers having at least one functional group selected from the group consisting of hydroxyl, carboxyl, a carboxylic salt group, a carboxylic ester group and epoxy, and (b) 70 to 99.95% by mole of at least one of fluorine-containing ethylenic monomers which do not have said functional group. The heat resistant scattering-preventing composite material is produced by applying, to the substrate, the material comprising the fluorine-containing polymer having an excellent adhesive property to the substrate without necessitating complicated steps.
    Type: Application
    Filed: November 19, 1999
    Publication date: January 9, 2003
    Inventors: TAKAYUKI ARAKI, YOSHITO TANAKA, MASAHIRO KUMEGAWA, NORITOSHI OKA, HISATO SANEMASA, TETSUO SHIMIZU
  • Patent number: 6503988
    Abstract: A polytetrafluoroethylene fine powder excellent in powder flowability which comprises fine particles (the primary particle) having a mean particle diameter of 0.05 to 1 &mgr;m, an apparent density of 0.52 to 0.70 g/ml, a standard specific gravity (SSG) of 2.14 to 2.23, and a secondary mean particle diameter of 100 to 1000 &mgr;m, antidripping agent using the above polytetrafluoroethylene fine powder, flame resistive resin composition containing this powder, and composition for inhibiting dust characteristics containing this powder.
    Type: Grant
    Filed: April 23, 1998
    Date of Patent: January 7, 2003
    Assignee: Daikin Industries, Ltd.
    Inventors: Takahiro Kitahara, Kazutaka Hosokawa, Tetsuo Shimizu
  • Patent number: 6500537
    Abstract: A non-sticking composite material for office automation equipment which is produced by applying, to a substrate, a material comprising a fluorine-containing polymer having an excellent adhesive property to the substrate without necessitating complicated steps and is excellent in heat resistance, non-sticking property, stain-proofing property, water- and oil-repelling property, stain removing property, chemical resistance, rust-preventive property, antibacterial property, resistance to energy ray and abrasion resistance. The non-sticking composite material for office automation equipment is produced by applying, to the substrate, the material comprising a fluorine-containing ethylenic polymer having functional group which is prepared by copolymerizing (a) 0.05 to 30% by mole of at least one of fluorine-containing ethylenic monomers having at least one functional group selected from the group consisting of hydroxyl, carboxyl, a carboxylic salt group, a carboxylic ester group and epoxy, and (b) 70 to 99.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: December 31, 2002
    Assignee: Daikin Industries, Ltd.
    Inventors: Takayuki Araki, Yoshito Tanaka, Masahiro Kumegawa, Noritoshi Oka, Hisato Sanemasa, Tetsuo Shimizu
  • Patent number: 6479578
    Abstract: A resin composition which gives a molded article having both of excellent mechanical properties and abrasion resistance with maintaining excellent thermal resistance, chemical resistance, surface characteristics (non-sticking property, low friction property), electric insulating property, etc. of a fluorine-containing polymer; a molded article obtained from the resin composition; and a method for producing the molded article are provided. The resin composition comprises: (A-1) a fluorine-containing ethylenic polymer prepared by copolymerizing at least one of fluorine-containing monomers having any one of hydroxyl, carboxyl, a carboxylate salt group, a carboxylate ester group or epoxy in an amount of 0.05 to 30% by mole on the basis of the total amount of monomers, and (B-1) an inorganic filler or a non-meltable organic filler, wherein said resin composition comprises 1 to 99.5% by weight of the component (A-1) and 0.5 to 99% by weight of the component (B-1).
    Type: Grant
    Filed: March 5, 2001
    Date of Patent: November 12, 2002
    Assignee: Daikin Industries, Ltd.
    Inventors: Takayuki Araki, Masahiro Kumegawa, Tsuyoshi Miyamori, Masami Kato, Masaji Komori, Taketo Kato, Tetsuo Shimizu
  • Patent number: 6476144
    Abstract: Spherulites in a molded article obtained from a melt-processable crystalline fluorine-containing resin composition are minimized to give the transparent molded article having a smooth surface and being resistant to contamination. An agent for minimizing spherulite size which comprises an amorphous fluorine-containing polymer or a fluorine-containing multi-segment polymer. The fluorine-containing multi-segment polymer comprises an amorphous segment and a crystalline segment.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: November 5, 2002
    Assignee: Daikin Industries, Ltd.
    Inventors: Ken Okanishi, Minoru Yoshida, Tatsuo Suzuki, Tetsuo Shimizu, Takahisa Aoyama
  • Patent number: 6476151
    Abstract: It is possible to provide the heat resistant material and coating material for OA equipments which comprise a fluorine-containing multi-segment polymer having heat resistance, abrasion resistance, non-sticking property against toner and oil resistance in addition to flexibility and are used particularly on surfaces of fuser roll and belt. Those materials comprise a fluorine-containing multi-segment polymer having an elastomeric fluorine-containing polymer chain segment A and a non-elastomeric fluorine-containing polymer chain segment B, and the elastomeric fluorine-containing polymer chain segment A comprises not less than 90% by mole of perhaloolefin unit as a recurring unit and imparts flexibility to the whole polymer.
    Type: Grant
    Filed: August 11, 2000
    Date of Patent: November 5, 2002
    Assignee: Daikin Industries, Ltd.
    Inventors: Takayuki Araki, Yoshito Tanaka, Masahiro Kumegawa, Norihito Otsuki, Masami Kato, Tetsuo Shimizu
  • Patent number: 6465577
    Abstract: Spherulites in a molded article obtained from a melt-processable crystalline fluorine-containing resin composition are minimized to give the transparent molded article having a smooth surface and being resistant to contamination. An agent for minimizing spherulite size which comprises an amorphous fluorine-containing polymer or a fluorine-containing multi-segment polymer. The fluorine-containing multi-segment polymer comprises an amorphous segment and a crystalline segment.
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: October 15, 2002
    Assignee: Daikin Industries, Ltd.
    Inventors: Ken Okanishi, Minoru Yoshida, Tatsuo Suzuki, Tetsuo Shimizu, Takahisa Aoyama
  • Patent number: 6440511
    Abstract: In a thermoplastic resin laminate having at least three thermoplastic resin layers, wherein an intermediate layer interposed between a first layer of a thermoplastic resin A1 and a second layer of a thermoplastic resin B1, which are not bonded each other, is a thermoplastic resin composition which contains as a main component a thermoplastic resin A2 having a bonding property to the thermoplastic resin A1 and a thermoplastic resin B2 having a bonding property to the thermoplastic resin B1 and forms a dispersion structure, wherein the thermoplastic resin A2 forms a continuous phase and the thermoplastic resin B2 forms a dispersed phase in the intermediate layer at the vicinity of the interface between the intermediate layer and the first layer, and wherein the thermoplastic resin B2 forms the continuous phase and the thermoplastic resin A2 forms the dispersed phase in the intermediate layer at the vicinity of the interface between the intermediate layer and the second layer, the first layer and the second laye
    Type: Grant
    Filed: September 17, 1997
    Date of Patent: August 27, 2002
    Assignee: Daikin Industries, Ltd.
    Inventors: Tetsuo Shimizu, Hirofumi Nishibayashi, Takeshi Inaba, Yoshihisa Yamamoto, Takafumi Yamato, Masakatsu Kitano
  • Patent number: 6425963
    Abstract: High tensile strength hot-rolled steel sheet suitable for use in interior materials for automobiles and a method for producing the same, in which bake hardenability, fatigue resistance, crash resistance, and resistance to room temperature aging are improved, containing 0.01% to 0.12% by weight of carbon, 2.0% by weight or less of silicon, 0.01% to 3.0% by weight of manganese, 0.2% by weight or less of phosphorus, 0.001% to 0.1% by weight of aluminum, and 0.003% to 0.02% by weight of nitrogen and subjected to hot rolling and cooling at a cooling rate of 50° C./s or more within 0.5 second after hot rolling; the hot-rolled steel sheet has a structure including a ferrite having an average grain diameter of 8 &mgr;m or less as a primary phase, the amount of solute Nitrogen ranges from 0.003% to 0.01%, and the ratio, Ngb/Ng, of an average concentration Ngb of nitrogen dissolved in the ferrite grain boundary to an average concentration Ng of nitrogen dissolved in ferrite grains ranges from 100 to 10,000.
    Type: Grant
    Filed: January 24, 2000
    Date of Patent: July 30, 2002
    Assignee: Kawasaki Steel Corporation
    Inventors: Shinjiro Kaneko, Tetsuo Shimizu, Osamu Furukimi
  • Patent number: 6416840
    Abstract: An injection moldable fluorine-containing meltable resin composition comprising 70 to 98 wt. % of a fluorine-containing meltable resin, and 2 to 30 wt. % of a needle-shape material having an average diameter of 3 &mgr;m or less, an average aspect ratio of between 10 and 100, and Mohs hardness of between 5 and 8, which composition has good sliding and sealing properties and excellent moldability, in particular, moldability of thin wall articles.
    Type: Grant
    Filed: May 2, 1997
    Date of Patent: July 9, 2002
    Assignee: Daikin Industries, Ltd.
    Inventors: Tsuyoshi Miyamori, Masaji Komori, Masami Katoh, Tetsuo Shimizu
  • Patent number: 6383620
    Abstract: An antiglare-treated article comprising an acrylic resin substrate and a fluorine-containing polymer coating formed on the surface of the substrate, wherein the thickness of the coating is in the range between 0.03 and 0.5 &mgr;m, and the fluorine-containing polymer has a refractive index in the range between 1.30 and 1.40 and comprises a block which is compatible with the acrylic resin and a block comprising a fluorine-containing elastomer. This treated article can be stably produced at low costs although it has the same abrasion resistance and antiglare effects as those of conventional antiglare-treated articles, or it has better antiglare effects than conventional antiglare films while maintaining abrasion resistance.
    Type: Grant
    Filed: March 15, 1999
    Date of Patent: May 7, 2002
    Assignee: Daikin Industries, Ltd.
    Inventors: Takahisa Aoyama, Tetsuo Shimizu, Norihito Otsuki, Norio Nagahama
  • Publication number: 20020002234
    Abstract: To provide a filler-containing PTFE granular powder for molding, which has a high apparent density, a small electrostatic charge and excellent flowability and gives a molded article which is free from lowering of tensile strength and elongation and coloring attributable to a surfactant. Also a process for preparing the granular powder is provided. The granulation is carried out by wetting 100 parts by weight of a mixture of a PTFE powder and filler with 30 to 60 parts by weight of an aqueous solution containing an anionic surfactant in a concentration of not less than 10 times and less than 40 times the critical micelle concentration and then applying mechanical force to the mixture.
    Type: Application
    Filed: June 26, 2001
    Publication date: January 3, 2002
    Applicant: Daikin Industries
    Inventors: Michio Asano, Tetsuo Shimizu, Shoji Kawachi
  • Publication number: 20010027240
    Abstract: Spherulites in a molded article obtained from a melt-processable crystalline fluorine-containing resin composition are minimized to give the transparent molded article having a smooth surface and being resistant to contamination. An agent for minimizing spherulite size which comprises an amorphous fluorine-containing polymer or a fluorine-containing multi-segment polymer. The fluorine-containing multi-segment polymer comprises an amorphous segment and a crystalline segment.
    Type: Application
    Filed: April 11, 2001
    Publication date: October 4, 2001
    Applicant: Daikin Industries, Ltd.
    Inventors: Ken Okanishi, Minoru Yoshida, Tatsuo Suzuki, Tetsuo Shimizu, Takahisa Aoyama
  • Publication number: 20010021744
    Abstract: A resin composition which gives a molded article having both of excellent mechanical properties and abrasion resistance with maintaining excellent thermal resistance, chemical resistance, surface characteristics (non-sticking property, low friction property), electric insulating property, etc. of a fluorine-containing polymer; a molded article obtained from the resin composition; and a method for producing the molded article are provided.
    Type: Application
    Filed: March 5, 2001
    Publication date: September 13, 2001
    Inventors: Takayuki Araki, Masahiro Kumegawa, Tsuyoshi Miyamori, Masami Kato, Masaji Komori, Taketo Kato, Tetsuo Shimizu
  • Patent number: 6281281
    Abstract: To provide a filler-containing PTFE granular powder for molding, which has a high apparent density, a small electrostatic charge and excellent flowability and gives a molded article which is free from lowering of tensile strength and elongation and coloring attributable to a surfactant. Also a process for preparing the granular powder is provided. The granulation is carried out by wetting 100 parts by weight of a mixture of a PTFE powder and filler with 30 to 60 parts by weight of an aqueous solution containing an anionic surfactant in a concentration of not less than 10 times and less than 40 times the critical micelle concentration and then applying mechanical force to the mixture.
    Type: Grant
    Filed: May 7, 1998
    Date of Patent: August 28, 2001
    Assignee: Daikin Industries, Ltd.
    Inventors: Michio Asano, Tetsuo Shimizu, Shoji Kawachi
  • Patent number: 6265107
    Abstract: To provide a binder for secondary battery using non-aqueous electrolyte which is soluble in usual organic solvents, does not swell in a non-aqueous electrolyte and besides enhances battery performance. As the binder, a copolymer comprising 50 to 80% by mole of vinylidene fluoride, 17 to 50% by mole of tetrafluoroethylene and less than 3% by mole of a monomer copolymerizable therewith is used.
    Type: Grant
    Filed: June 16, 1999
    Date of Patent: July 24, 2001
    Assignee: Daikin Industries, Ltd.
    Inventors: Tetsuo Shimizu, Yoshihide Higashihata, Takayuki Nakamura, Tadashi Ino, Kenji Ichikawa
  • Patent number: 6225399
    Abstract: A resin composition which gives a molded article having both of excellent mechanical properties and abrasion resistance with maintaining excellent thermal resistance, chemical resistance, surface characteristics (non-sticking property, low friction property), electric insulating property, etc. of a fluorine-containing polymer; a molded article obtained from the resin composition; and a method for producing the molded article are provided. The resin composition comprises: (A-1) a fluorine-containing ethylenic polymer prepared by copolymerizing at least one of fluorine-containing monomers having any one of hydroxyl, carboxyl, a carboxylate salt group, a carboxylate ester group or epoxy in an amount of 0.05 to 30% by mole on the basis of the total amount of monomers, and (B-1) an inorganic filler or a non-meltable organic filler, wherein said resin composition comprises 1 to 99.5% by weight of the component (A-1) and 0.5 to 99% by weight of the component (B-1).
    Type: Grant
    Filed: April 27, 1998
    Date of Patent: May 1, 2001
    Assignee: Daikin Industries, Ltd.
    Inventors: Takayuki Araki, Masahiro Kumegawa, Tsuyoshi Miyamori, Masami Kato, Masaji Komori, Taketo Kato, Tetsuo Shimizu