Patents by Inventor Tohru Hayakawa

Tohru Hayakawa 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).

  • Anti periodontitis-causing microorganism agent and medical or dental materials using the same
    Patent number: 9486496
    Abstract: A medical or dental material can be prepared by using, as an active ingredient, at least one of a protamine, and derivatives thereof and hydrolysates thereof, or a complex of at least one of a protamine, and derivatives thereof and hydrolysates thereof with an anionic high molecular weight compound. As a result, an antibacterial agent against periodontal disease-causing bacteria can be provided, which is highly safe without concern of a side effect. A medical or dental material can be also provided, which exhibits antimicrobial activity on periodontal disease-causing bacteria and additionally has insolubility in water and good formability.
    Type: Grant
    Filed: December 21, 2009
    Date of Patent: November 8, 2016
    Assignees: MARUHA NICHIRO CORPORATION
    Inventors: Tadao Fukushima, Tohru Hayakawa, Yoshio Okahata, Makoto Mitarai, Keishi Iohara, Hiroyuki Enari, Haruchika Sekido
  • ANTI PERIODONTITIS-CAUSING MICROORGANISM AGENT AND MEDICAL OR DENTAL MATERIALS USING THE SAME
    Publication number: 20110257094
    Abstract: A medical or dental material can be prepared by using, as an active ingredient, at least one of a protamine, and derivatives thereof and hydrolysates thereof, or a complex of at least one of a protamine, and derivatives thereof and hydrolysates thereof with an anionic high molecular weight compound. As a result, an antibacterial agent against periodontal disease-causing bacteria can be provided, which is highly safe without concern of a side effect. A medical or dental material can be also provided, which exhibits antimicrobial activity on periodontal disease-causing bacteria and additionally has insolubility in water and good formability.
    Type: Application
    Filed: December 21, 2009
    Publication date: October 20, 2011
    Applicants: MARUHA NICHIRO FOODS, INC.
    Inventors: Tadao Fukushima, Tohru Hayakawa, Yoshio Okahata, Makoto Mitarai, Keishi Iohara, Hiroyuki Enari, Haruchika Sekido