Patents by Inventor Jun Oba

Jun Oba 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).

  • Castable refractory powder composition, premixed material prepared therefrom, method for casting premixed material, and hardened refractory body obtained therefrom
    Patent number: 8017058
    Abstract: A premixed material is obtained by tempering a castable refractory powder composition comprising refractory aggregate, fine refractory powder, alumina cement, a dispersing agent and an alumina cement hydration stopper with water. The hydration stopper is acidic in a state of an aqueous solution. The amount of the hydration stopper is controlled such that the premixed material has a pH of 2 to 7. Immediately after adding and mixing an alumina cement hydration starter to the premixed material, the resultant mixture is cast into a mold. The addition of the hydration starter can be carried out 5 days or more after the production of the premixed material.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: September 13, 2011
    Assignee: Taiko Refractories Co., Ltd.
    Inventors: Jun Oba, Kunio Tanaka, Nobuyuki Takahashi, Takashi Fujisaki
  • CASTABLE REFRACTORY POWDER COMPOSITION, PREMIXED MATERIAL PREPARED THEREFROM , METHOD FOR CASTING PREMIXED MATERIAL, AND HARDENED REFRACTORY BODY OBTAINED THEREFROM
    Publication number: 20090032999
    Abstract: A premixed material is obtained by tempering a castable refractory powder composition comprising refractory aggregate, fine refractory powder, alumina cement, a dispersing agent and an alumina cement hydration stopper with water. The hydration stopper is acidic in a state of an aqueous solution. The amount of the hydration stopper is controlled such that the premixed material has a pH of 2 to 7. Immediately after adding and mixing an alumina cement hydration starter to the premixed material, the resultant mixture is cast into a mold. The addition of the hydration starter can be carried out 5 days or more after the production of the premixed material.
    Type: Application
    Filed: September 29, 2008
    Publication date: February 5, 2009
    Applicant: TAIKO REFRACTORIES CO., LTD.
    Inventors: Jun OBA, Kunio Tanaka, Nobuyuki Takahashi, Takashi Fujisaki
  • Powder composition for castable refractory and premixed material comprising the same, method for applying premixed material and refractory hardene product therefrom
    Publication number: 20050239630
    Abstract: A premixed material is obtained by tempering a castable refractory powder composition comprising refractory aggregate, fine refractory powder, alumina cement, a dispersing agent and an alumina cement hydration stopper with water. The hydration stopper is acidic in a state of an aqueous solution. The amount of the hydration stopper is controlled such that the premixed material has a pH of 2 to 7. Immediately after adding and mixing an alumina cement hydration starter to the premixed material, the resultant mixture is cast into a mold. The addition of the hydration starter can be carried out 5 days or more after the production of the premixed material.
    Type: Application
    Filed: June 30, 2003
    Publication date: October 27, 2005
    Inventors: Jun Oba, Kunio Tanaka, Nobuyuki Takahashi, Takashi Fujisaki
  • Incoming call reporting toy
    Patent number: 6190227
    Abstract: An incoming call reporting toy that visually or aurally reports a call arrival state of a portable terminal to a person around the toy in an amusing fashion. An electromagnetic wave emitted when a portable terminal receives an incoming call is used to activate an incoming call reporting circuit incorporated in the toy body. A signal outputted from a signal controller configuring the incoming call reporting circuit drives a motor to allow the toy body to perform a predetermined operation while emitting a sound and/or light, thereby notifying a person around the toy of the arrival of the call at the portable terminal.
    Type: Grant
    Filed: August 13, 1999
    Date of Patent: February 20, 2001
    Assignee: Jun Planning Co., Inc.
    Inventor: Jun Oba