Patents by Inventor Akira Tominaga

Akira Tominaga 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: 4710561
    Abstract: A resin coating composition comprising an epoxy resin derivative having an imidazoline ring functional group of the formula ##STR1## wherein R.sub.1 represents an alkylene group having 2 to 6 carbon atoms, each of R.sub.2, R.sub.3, R.sub.4 and R.sub.5 represents a hydrogen atom or a methyl group, and R.sub.6 represents a residue of a carboxylic acid,as a resin binder. This resin coating composition is useful for cationic electrodeposition coating.
    Type: Grant
    Filed: November 26, 1986
    Date of Patent: December 1, 1987
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Akira Tominaga, Reiziro Nishida
  • Patent number: 4616066
    Abstract: A vinyl or acrylic polymer-modified epoxy resin comprising a reaction product of(A) an epoxy group-containing vinyl or acrylic polymer,(B) a bisphenol compound, and(C) a diglycidyl ether of a bisphenol compound.
    Type: Grant
    Filed: October 4, 1985
    Date of Patent: October 7, 1986
    Assignee: Kansai Paint Co., Ltd.
    Inventor: Akira Tominaga
  • Patent number: 4528363
    Abstract: A heat-curable resin coating composition comprising as a resin binder a film-forming resin which contains at least two tertiary nitrogen atoms per molecule and may optionally contain primary or secondary amino groups, each of said tertiary nitrogen atoms having directly bonded thereto a functional group represented by the following formula ##STR1## wherein R.sub.1 represents a divalent saturated aliphatic hydrocarbon group having 1 to 18 carbon atoms which may be substituted by a hydroxyl group and/or may be interrupted by an ether linkage (--O--); R.sub.2 represents a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, or a part of the main chain of the resin; and R.sub.3 represents a hydrogen atom or a hydrocarbon group having 1 to 12 carbon atoms which may be substituted by a hydroxyl group and/or may be interrupted by an ether linkage, and each of said tertiary nitrogen atoms optionally forming a member of a nitrogen-containing heterocyclic ring formed together with R.
    Type: Grant
    Filed: February 22, 1984
    Date of Patent: July 9, 1985
    Assignee: Kansai Paint Co., Ltd.
    Inventor: Akira Tominaga
  • Patent number: 4287041
    Abstract: An acid-neutralizable cationic electrodepositable resin composition comprising as a film-forming ingredient the reaction product of(A) an epoxy resin or an adduct of an epoxy resin with a primary amine and/or a secondary amine,(B) an amino-terminated condensation product between a maleinized fatty acid and a polyamine, and(C) a partially blocked polyisocyanate compound.The composition can form a cathodically electrodepositable aqueous bath by being neutralized with an acid, and can give a coated film having superior surface smoothness and corrosion resistance with a high throwing power.
    Type: Grant
    Filed: April 14, 1980
    Date of Patent: September 1, 1981
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Akira Tominaga, Reijiro Nishida
  • Patent number: 4274989
    Abstract: An acid-neutralizable cationic electrodepositable resin composition comprising as a film-forming ingredient the reaction product of(A) an epoxy resin or an adduct of an epoxy resin with a primary amine and/or a secondary amine,(B) an amino-terminated condensation product between a maleinized fatty acid and a polyamine, and(C) a partially blocked polyisocyanate compound.The composition can form a cathodically electrodepositable aqueous bath by being neutralized with an acid, and can give a coated film having superior surface smoothness and corrosion resistance with a high throwing power.
    Type: Grant
    Filed: September 25, 1979
    Date of Patent: June 23, 1981
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Akira Tominaga, Reijiro Nishida
  • Patent number: 4190564
    Abstract: A cationic electrophoretic coating composition comprising:(A) a water-soluble or water-dispersible resin prepared by neutralizing with an acid addition products of partially blocked polyisocyanate and the reaction products, said reaction products being prepared by reacting at least one of fatty acid and polyamide with adducts prepared by being allowed an epoxy resin to react with a basic amino compound, and(B) at least one of addition polymers of at least one of ethylene oxide and propylene oxide and derivatives of the addition polymers, the polymers and the derivatives thereof having a number average molecular weight of 500 to 10,000 and having a solubility of up to 60 parts by weight in 100 parts by weight of water at 25.degree. C.
    Type: Grant
    Filed: September 14, 1978
    Date of Patent: February 26, 1980
    Assignee: Kansai Paint Company, Limited
    Inventors: Akira Tominaga, Yasuyuki Hirata
  • Patent number: 4134865
    Abstract: A process for preparing a cationic electrophoretic coating composition comprising the steps of:(I) mixing or reacting(1) a reaction product of an epoxy-amine adduct (A) and a partially blocked polyisocyanate (C) and(2) a reaction product of a polyamide (B) and a partially blocked polyisocyanate (C) and(II) dissolving or dispersing the resulting mixture or reaction product in an aqueous medium by neutralization with an acid.
    Type: Grant
    Filed: July 22, 1977
    Date of Patent: January 16, 1979
    Assignee: Kansai Paint Company, Limited
    Inventor: Akira Tominaga
  • Patent number: 4134866
    Abstract: A cationic electrophoretic coating composition comprises a resinous binder which is prepared by reacting an epoxy resin-amine adduct (A) with a partially blocked polyisocyanate (C) and mixing or reacting a polyamide (B) with the resulting product, or by reacting a polyamide (B) with a partially blocked polyisocyanate (C) and mixing or reacting an epoxy resin-amine adduct (A) with the resulting product.
    Type: Grant
    Filed: June 3, 1977
    Date of Patent: January 16, 1979
    Assignee: Kansai Paint Company, Limited
    Inventors: Akira Tominaga, Yasuyuki Hirata
  • Patent number: 4112884
    Abstract: A hydraulic valve lifter for an internal combustion engine of the type in which a liquid introduced into a confined chamber in the valve lifter is compressed by a plunger so that the pressure of the compressed liquid causes a valve of an intake or exhaust port of the engine to open, is characterized in that an internal mechanism which regulates the time for initiating the compression of the liquid in the confined chamber in response to the change in the running condition of the internal combustion engine is incorporated in the valve lifter for making the valve operating characteristics optimum for the varying running conditions of the engine.
    Type: Grant
    Filed: July 2, 1976
    Date of Patent: September 12, 1978
    Assignee: Toyota Jidosha Kogyo Kabushiki Kaisha
    Inventor: Akira Tominaga
  • Patent number: 4036795
    Abstract: A cationic electrophoretic coating composition comprises an aqueous medium and a resinous binder dispersed therein, said resinous binder being prepared by contacting at least one starting material with a partially blocked polyisocyanate compound at a temperature of 40.degree. to 130.degree. C in the weight ratio of from 5 to 9 of the former to from 5 to 1 of the latter, and subsequently by neutralizing the resulting product with an acid, said starting material being at least one selected from the group consisting of:1. a mixture of a reaction product prepared by reacting an epoxy resin with a basic amino compound having at least one basic amino group, and a polyamide having at least one basic amino group, in the weight ratio of from 1 to 9 of the reaction product to from 9 to 1 of the polyamide, and2. a further reaction product prepared by mixing said reaction product with said polyamide at a temperature of 50.degree. to 200.degree.
    Type: Grant
    Filed: September 11, 1975
    Date of Patent: July 19, 1977
    Assignee: Kansai Paint Co., Ltd.
    Inventor: Akira Tominaga