Patents by Inventor Takehiro Ojima

Takehiro Ojima 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: 20220289914
    Abstract: Provided is a method for producing an aqueous clear coating composition that is capable of providing an aqueous clear coating composition comprising inorganic oxide fine particles as an ultraviolet absorber and an aqueous silicone resin emulsion having good storage stability, which aqueous clear coating composition is capable of forming a coating film being superior in weatherability and durability (especially acid resistance) and high in transparency.
    Type: Application
    Filed: March 3, 2022
    Publication date: September 15, 2022
    Applicant: NIPPON PAINT INDUSTRIAL COATINGS CO., LTD.
    Inventors: Taishi Higaki, Hiroki Ando, Yasumasa Nishiwaki, Masahiko Harada, Takehiro Ojima
  • Publication number: 20190241749
    Abstract: The invention provides an aqueous silicone resin emulsion for preparing a coating composition, an aqueous coating composition using the same, and a method for producing an aqueous clear coating composition.
    Type: Application
    Filed: February 4, 2019
    Publication date: August 8, 2019
    Applicant: NIPPON PAINT INDUSTRIAL COATINGS CO., LTD.
    Inventors: Yuji ITO, Takehiro OJIMA, Masahiko HARADA, Hiroki ANDO
  • Patent number: 5898064
    Abstract: Thermoplastic or thermosetting resin particles having a narrow particle size distribution are produced by suspending a liquid resinous composition in an aqueous solution of an anionic or cationic polyelectrolyte as primary particles of oil droplets, adjustion the suspension at a pH at which the polyelectrolyte is insolubilized to agglomerate into secondary particles of larger particle size, and allowing the secondary particles in the suspension to solidify.
    Type: Grant
    Filed: October 2, 1996
    Date of Patent: April 27, 1999
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Yutaka Harada, Takehiro Ojima, Haruhiko Sato
  • Patent number: 5418109
    Abstract: Disclosed is a preparation method of a toner comprising steps of:(a) preparing a dispersion mixture containing colored polymer particles, a charge controlling agent and organic resin fine particles, in an aqueous medium;(b) allowing said charge controlling agent and organic resin fine particles to be adhered on the surface of said colored polymer particles by salting-out;(c) drying said colored polymer particles having thereon said charge controlling agent and organic resin fine particles; and(d) applying mechanical impact to said colored polymer particles to effect a conversion of said organic resin fine particles into a film on the surfaces of said colored polymer particles.
    Type: Grant
    Filed: April 26, 1994
    Date of Patent: May 23, 1995
    Assignee: Nippon Paint Company
    Inventors: Akihiro Kanakura, Yutaka Harada, Takehiro Ojima, Shinji Seo, Haruhiko Sato
  • Patent number: 5395880
    Abstract: The present invention provides a method which makes it possible to manufacture substantially spherical resin granules with a narrow grain size distribution by a simple operation. According to the present invention, there is provided a method of manufacturing resin granules with a grain diameter of 1.about.100 .mu.m and narrow grain size distribution by controlling the cloud point of polyvinyl alcohol and other water soluble polymers.
    Type: Grant
    Filed: October 28, 1992
    Date of Patent: March 7, 1995
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Haruhiko Sato, Naoya Yabuuchi, Shinji Seo, Takehiro Ojima