Patents by Inventor Kazunori Ishikawa

Kazunori Ishikawa 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: 20050202917
    Abstract: A hydraulic control apparatus of an automatic transmission. The hydraulic control apparatus of the automatic transmission has a hydraulic servo for controlling an engaging state of a clutch C-1 on the basis of supplied oil pressure, a linear solenoid valve for C-1 for outputting signal pressure by adjusting the oil pressure, a control valve for outputting control pressure provided by adjusting line pressure PL on the basis of the signal pressure of the linear solenoid valve for C-1, and a C-1 apply relay valve for inputting, selectively switching and outputting the control pressure and the line pressure PL to the hydraulic servo. An orifice for regulating the flow rate of the oil is arranged in an oil path g for inputting the line pressure PL to this C-1 apply relay valve.
    Type: Application
    Filed: March 8, 2005
    Publication date: September 15, 2005
    Inventors: Tetsuya Shimizu, Kenichi Tsuchida, Akitomo Suzuki, Kazunori Ishikawa, Yoshinori Shibayama
  • Publication number: 20050199854
    Abstract: A method of production of a cyclic polysulfide having the formula (I): wherein x is an integer of 2 to 6, n is an integer of 1 to 15, and R indicates a substituted or unsubstituted C2 to C18 alkylene group or a substituted or unsubstituted C2 to C18 alkylene group including an oxyalkylene group comprising: reacting a dihalogen compound of the formula X—R—X wherein, X independently indicates a halogen atom, and R indicates a substituted or unsubstituted C2 to C18 alkylene group or a substituted or unsubstituted C2 to C18 alkylene group including an oxyalkylene group and an alkali metal polysulfide of the formula M2Sx wherein, M is an alkali metal and x is an integer of 2 to 6, by a two-phase system in an incompatible mixed solvent of a hydrophilic and lypophilic solvent.
    Type: Application
    Filed: May 11, 2005
    Publication date: September 15, 2005
    Inventors: Choi Wonmun, Kazunori Ishikawa
  • Patent number: 6936676
    Abstract: This invention provides a one-part, room temperature moisture curable resin composition which comprises a ketimine prepared by reacting a ketone having a substituent at ? position and a polyamine having at least two amino groups within its molecule wherein ? position is methylene, and a main polymer which is an epoxy resin and/or a modified silicone having at least two hydrolyzable alkoxysilyl groups in its molecule, and which exhibits good shelf stability and high curing rate once taken out of the container, and which may further exhibit flexibility; a one-part, room temperature moisture curable resin composition which exhibits good shelf stability and curability as well as wet surface adhesion or initial thixotropic properties; a silicon containing compound having ketimine group whose reaction with the epoxy resin during the storage is prevented by the presence of a bulky alkyl group near the ketimine group and which exhibits good shelf stability and curability, and its production method; a one-part, room t
    Type: Grant
    Filed: November 24, 2003
    Date of Patent: August 30, 2005
    Assignee: Yokohama Rubber Co., Ltd.
    Inventors: Hiroyuki Okuhira, Naoya Adachi, Kazunori Ishikawa, Toshimitsu Takeda, Yo Kotani
  • Publication number: 20050171318
    Abstract: A curable resin composition includes a silane compound (a) having an epoxy group, and at least one selected from a silane compound (b) having an amino group, a silane compound (c) having a mercapto group, and a silane compound (d) having an acid anhydride group. At least a part of at least one selected from the silane compounds (a) to (d) includes a condensate. This composition has excellent heat resistance with a small change in storage modulus due to temperatures.
    Type: Application
    Filed: February 2, 2005
    Publication date: August 4, 2005
    Inventors: Hiroyuki Okuhira, Tomoyuki Matsumura, Kazunori Ishikawa, Natsuki Hamada, Keiko Miura, Hiroyuki Hosoda, Mitsukazu Ochi
  • Patent number: 6916888
    Abstract: A rubber composition comprising a vulcanizable rubber, a reinforcing filler, a softening agent, and other reagents for rubber to which is added in a specific amount of a sulfur compound having the formula (I): —(SxR1)n—??(I) wherein R1 represents an organic group, x is a number of 3 to 5 on average, and n is an integer of 1 to 100, or a specific sulfur compound (1) and sulfur (2), and optionally a thiazole base, sulfenamide base, thiuram base, and/or diothio acid base vulcanization accelerator (3).
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: July 12, 2005
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Fumito Yatsuyanagi, Kazunori Ishikawa, Shuichi Fukutani
  • Patent number: 6908958
    Abstract: An organically modified layered clay ionically bonded with an organic compound having an ammonium group and an amino group, an organic polymer composition containing the same and an organic polymer capable of reacting with the amino group, and an inner liner using the same.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: June 21, 2005
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Tsukasa Maruyama, Kazunori Ishikawa, Naoya Amino, Masahiro Ikawa
  • Publication number: 20050103635
    Abstract: To produce a micro component, a resin base (1) capable of being dissolved by a solvent is formed, physical external force is allowed to act on the resin base (1) to form a concave (3) and after a metal is filled into the concave (3), an excessive metal is removed by grinding and the resin base (1) is dissolved by the solvent. Consequently, the necessity for lithography apparatuses such as a stepper and an etching apparatus can be eliminated, economy can be improved and production of components having complicated shapes that the lithographic technology cannot easily produce can also be produced.
    Type: Application
    Filed: May 23, 2003
    Publication date: May 19, 2005
    Inventors: Kazuhisa Arai, Kazunori Ishikawa
  • Publication number: 20050067597
    Abstract: A pressure control valve includes a sleeve on which an input port, an output port, and drain ports are formed; and a linear solenoid portion for generating thrust. The pressure control valve further includes a first spool, which advances and retreats within the sleeve, for receiving the thrust, regulating input pressure input to the input port, and outputting the regulated output pressure from the output port; and a second spool, which advances and retreats within the sleeve, for receiving the thrust, and selectively applying output pressure to the first spool. The output pressure is selectively applied to the first spool, thereby doing away with the need for a control valve or the like. This simplifies the oil pressure circuit for generating control pressure, and allows control pressure to be generated in a stable manner, and the size of the pressure control valve to be reduced.
    Type: Application
    Filed: September 29, 2004
    Publication date: March 31, 2005
    Inventors: Haruki Yamamoto, Kazunori Ishikawa, Takahiro Kokubu
  • Patent number: 6849674
    Abstract: A rubber composition comprising a vulcanizable rubber, a reinforcing filler, a softening agent, and other reagents for rubber to which is added in a specific amount of a sulfur compound having the formula (I): —(SxR1)n—??(I) wherein R1 represents an organic group, x is a number of 3 to 5 on average, and n is an integer of 1 to 100, or a specific sulfur compound (1) and sulfur (2), and optionally a thiazole base, sulfenamide base, thiuram base, and/or diothio acid base vulcanization accelerator (3).
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: February 1, 2005
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Fumito Yatsuyanagi, Kazunori Ishikawa, Shuichi Fukutani
  • Publication number: 20040209554
    Abstract: An abrasive obtained by curing raw materials containing at least (1) an organic polyisocyanate and at least one member selected from an organic polyol and an organic polyamine as matrix resin materials, and (2) a particle containing a predetermined amount of a hydroxyl group and/or colloidal silica and the like as an abrasive particle(s), by a polymerization reaction, the matrix resin being a resin having an urethane bond and/or an urea bond.
    Type: Application
    Filed: January 30, 2004
    Publication date: October 21, 2004
    Inventors: Akio Tsumagari, Kazunori Ishikawa, Kazuya Miyazaki, Kazuhisa Arai
  • Patent number: 6803445
    Abstract: A moisture curable polyurethane composition comprising (A) a urethane prepolymer having two or more isocyanate groups in the molecule, (B) an inorganic filler as a storage stabilizer, (C) an N-silylamide compound represented by the formula (1), (D) an epoxy resin, and/or (E) a moisture latent curing agent, and a moisture curable epoxy resin composition comprising (D) an epoxy resin, (C) an N-silylamide compound, and (E) a moisture latent curing agent. (R1—CONH)4-n—Si—R2n  (1) wherein R1 is a hydrocarbon group having 5 to 21 carbon atoms optionally containing a heteroatom, provided that when n is 0, 1 or 2, R1s may be the same or different; and R2 is an alkyl or alkoxy group having 1 to 3 carbon atoms; and n is 0, 1, 2 or 3. The moisture curable compositions are excellent in storage stability and thixotropic properties, have high curing rates at the time of working, and can give rise to cured products having excellent mechanical properties such as tensile strength.
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: October 12, 2004
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Kazunori Ishikawa, Hiroyuki Hosoda
  • Publication number: 20040192873
    Abstract: This invention provides a one-part, room temperature moisture curable resin composition which comprises a ketimine prepared by reacting a ketone having a substituent at &agr; position and a polyamine having at least two amino groups within its molecule wherein &agr; position is methylene, and a main polymer which is an epoxy resin and/or a modified silicone having at least two hydrolyzable alkoxysilyl groups in its molecule, and which exhibits good shelf stability and high curing rate once taken out of the container, and which may further exhibit flexibility; a one-part, room temperature moisture curable resin composition which exhibits good shelf stability and curability as well as wet surface adhesion or initial thixotropic properties; a silicon containing compound having ketimine group whose reaction with the epoxy resin during the storage is prevented by the presence of a bulky alkyl group near the ketimine group and which exhibits good shelf stability and curability, and its production method; a one-part
    Type: Application
    Filed: April 13, 2004
    Publication date: September 30, 2004
    Applicant: The Yokohama Rubber Co., Ltd.
    Inventors: Hiroyuki Okuhira, Naoya Adachi, Kazunori Ishikawa, Toshimitsu Takeda, Yo Kotani
  • Patent number: 6794479
    Abstract: A moisture-curable epoxy resin composition comprises a polyepoxide and a 2-alkyl-3-methyl or ethyl-oxazolidine wherein the 2-alkyl group the alkyl group is attached to the oxazolidine ring via a secondary or tertiary carbon atom.
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: September 21, 2004
    Assignee: The Yokohama Rubber CO, LTD
    Inventors: Hiroyuki Okuhira, Kazunori Ishikawa
  • Patent number: 6765055
    Abstract: An adhesion promoter for a primer, comprising a silane compound that is a reaction product between a polyisocyanate and a silane coupling agent having a secondary amino group, the nitrogen atom of which is directly connected to a phenyl group or a derivative thereof, the silane compound having in average one or more NCO group and in average one or more hydrolyzable alkoxysilyl group in the molecule. Also, a primer composition comprising the adhesion promoter for a primer and a film forming resin is disclosed. The adhesion promoter has high adhesion to various adherends and retains that effect after prolonged storage and the primer composition is excellent in adhesion to various adherends and retains adhesion after prolonged storage.
    Type: Grant
    Filed: August 3, 2001
    Date of Patent: July 20, 2004
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Akihiro Miyata, Kazunori Ishikawa, Hideyuki Matsuda
  • Publication number: 20040138356
    Abstract: The present invention provides a primer composition containing a chlorinated polyolefin resin having a chlorine content of 30% by weight or less and an aminosilane compound and/or a ketimine silane compound having specific structures. The primer composition of the present invention has satisfactory adhesion to a polyolefin material such as polyethylene and polypropylene, and in addition, has satisfactory adhesion with a modified silicone sealing material.
    Type: Application
    Filed: December 23, 2003
    Publication date: July 15, 2004
    Inventors: Akihiro Miyata, Kazunori Ishikawa, Mineto Yamaguchi, Kenichi Tsubota
  • Patent number: 6756466
    Abstract: This invention provides a one-part, room temperature moisture curable resin composition which comprises a ketimine prepared by reacting a ketone having a substituent at &agr; position and a polyamine having at least two amino groups within its molecule wherein &agr; position is methylene, and a main polymer which is an epoxy resin and/or a modified silicone having at least two hydrolyzable alkoxysilyl groups in its molecule, and which exhibits good shelf stability and high curing rate once taken out of the container, and which may further exhibit flexibility; a one-part, room temperature moisture curable resin composition which exhibits good shelf stability and curability as well as wet surface adhesion or initial thixotropic properties; a silicon containing compound having ketimine group whose reaction with the epoxy resin during the storage is prevented by the presence of a bulky alkyl group near the ketimine group and which exhibits good shelf stability and curability, and its production method; a one-part
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: June 29, 2004
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Hiroyuki Okuhira, Naoya Adachi, Kazunori Ishikawa, Toshimitsu Takeda, Yo Kotani
  • Patent number: 6752734
    Abstract: This invention provides a switch valve which can increase durability without causing driver discomfort at a time when a failure occurs. The switch valve has a spool is formed by a spool portion and a plunger which is arranged so as to freely abut against the spool portion. The switch valve also include a spool surrounding portion surrounding the spool and provided with a plurality of land portions. The spool selectively adopts a position at a normal, non-failure state and a position at a fail state. In the position at the normal state, at least one corner portion of the land in the plunger protrudes from an end portion of the corresponding land portion. Because a stepped wear portion is not formed on an inner peripheral surface of the land portion, foreign materials, such as wear powders or the like, do not enter a portion between an outer peripheral surface of the land and the inner peripheral surface of the land portion when the failure occurs.
    Type: Grant
    Filed: July 1, 2002
    Date of Patent: June 22, 2004
    Assignees: Aisin AW Co., LTD, Toyota Jidosha Kabushiki Kaisha
    Inventors: Masahiro Itou, Naoyuki Fukaya, Mikio Iwase, Kazunori Ishikawa, Yoshihiro Iijima
  • Publication number: 20040106766
    Abstract: This invention provides a one-part, room temperature moisture curable resin composition which comprises a ketimine prepared by reacting a ketone having a substituent at a position and a polyamine having at least two amino groups within its molecule wherein &agr; position is methylene, and a main polymer which is an epoxy resin and/or a modified silicone having at least two hydrolyzable alkoxysilyl groups in its molecule, and which exhibits good shelf stability and high curing rate once taken out of the container, and which may further exhibit flexibility; a one-part, room temperature moisture curable resin composition which exhibits good shelf stability and curability as well as wet surface adhesion or initial thixotropic properties; a silicon containing compound having ketimine group whose reaction with the epoxy resin during the storage is prevented by the presence of a bulky alkyl group near the ketimine group and which exhibits good shelf stability and curability, and its production method; a one-part, ro
    Type: Application
    Filed: November 24, 2003
    Publication date: June 3, 2004
    Applicant: The Yokohama Rubber Co., Ltd.
    Inventors: Hiroyuki Okuhira, Naoya Adachi, Kazunori Ishikawa, Toshimitsu Takeda, Yo Kotani
  • Patent number: 6723836
    Abstract: To provide low odor polyoxyalkylene polyol, a process for producing the same, and a low odor urethane prepolymer and a low odor urethane composition using the same as a raw material. The low odor polyoxyalkylene polyol comprising polyoxyalkylene polyol with amine added thereto, the amine having at least one amino group represented by the following formula (1): is provided, wherein R1, R2 and R3 independently represent hydrogen atom or an organic group which may contain a hetero atom in which an atom bonded to nitrogen atom is carbon atom.
    Type: Grant
    Filed: April 20, 2000
    Date of Patent: April 20, 2004
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Kiminori Araki, Kazunori Ishikawa
  • Patent number: 6720378
    Abstract: A rubber composition comprising (i) 100 parts by weight of a rubber and (ii) 10 to 180 parts by weight of a composite composed of an oxidative condensate obtained by oxidative condensation of a &pgr;-electron aromatic compound and carbon black and a pneumatic tire using the same as a tire tread.
    Type: Grant
    Filed: March 5, 2003
    Date of Patent: April 13, 2004
    Assignee: Yokohama Rubber Co., Ltd
    Inventors: Tsukasa Maruyama, Kazunori Ishikawa, Yoshiaki Kirino