Patents by Inventor Keijiro Ishiyama

Keijiro Ishiyama 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: 9056711
    Abstract: A plastic sheet for a packaging container with which the activity of microorganisms which stays on a stored matter such as raw fishes and meats before packaging or adheres thereto after packaging is lowered, and the growth of the microorganisms is suppressed in the case of storing or transporting meat and fish bodies in a raw state. The plastic sheet for a packaging container comprises a three-layer structure plastic sheet layered using a polyethylene film as an inner layer containing an antioxidant and an antibacterial, a polyvinyl alcohol film as an intermediate layer having high gas barrier properties and a polypropylene film as an outer layer.
    Type: Grant
    Filed: May 11, 2007
    Date of Patent: June 16, 2015
    Assignee: J-Chemical Corporation
    Inventor: Keijiro Ishiyama
  • Publication number: 20100143624
    Abstract: A plastic sheet for a packaging container with which the activity of a microorganism which stays on a stored matter such as raw fish before packaging or adheres thereto after packaging is lowered, and the growth of the microorganism is suppressed in the case of storing or transporting in a state of raw fish is provided. The plastic sheet for a packaging container comprises a three-layer structure plastic sheet obtained by laminating a polyethylene film containing an antioxidant and an antimicrobial agent as an inner layer, a high gas barrier polyvinyl alcohol film as an intermediate layer, and a polypropylene film as an outer layer.
    Type: Application
    Filed: May 11, 2007
    Publication date: June 10, 2010
    Applicant: J-Chemical Corporation
    Inventor: Keijiro Ishiyama