Patents by Inventor Kenji Tomihata

Kenji Tomihata 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).

  • Tissue regeneration substrate
    Patent number: 8889171
    Abstract: The present invention provides a tissue regeneration substrate that has the ability to release a basic fibroblast growth factor (bFGF) and like cell growth factors in a sustained manner, into which cells can easily enter, and that is suitably used for regeneration of tissues. Specifically, the present invention provides a tissue regeneration substrate that comprises a cell growth factor adsorbed in a bioabsorbable porous substrate that contains collagen and gelatin, and a method for producing the same.
    Type: Grant
    Filed: September 5, 2006
    Date of Patent: November 18, 2014
    Assignee: Gunze Limited
    Inventors: Yoshito Ikada, Shigehiko Suzuki, Tsuguyoshi Taira, Yoshitake Takahashi, Kenji Tomihata
  • TISSUE REGENERATION SUBSTRATE
    Publication number: 20090143287
    Abstract: The present invention provides a tissue regeneration substrate that has the ability to release a basic fibroblast growth factor (bFGF) and like cell growth factors in a sustained manner, into which cells can easily enter, and that is suitably used for regeneration of tissues. Specifically, the present invention provides a tissue regeneration substrate that comprises a cell growth factor adsorbed in a bioabsorbable porous substrate that contains collagen and gelatin, and a method for producing the same.
    Type: Application
    Filed: September 5, 2006
    Publication date: June 4, 2009
    Applicant: GUNZE LIMITED
    Inventors: Yoshito IKADA, Shigehiko SUZUKI, Tsuguyoshi TAIRA, Yoshitake TAKAHASHI, Kenji TOMIHATA
  • Surgical suture
    Patent number: 6616687
    Abstract: The present invention relates to a coating material for surgical sutures which comprises as essential ingredients a copolymer having repeating units of lactic acid and &egr;-caprolacton and calcium stearate; and a surgical suture comprising a lactic acid/&egr;-caprolacton copoymer in which a lactide/&egr;-caprolacton ratio is (70-85 mol %)/(30-15 mol %) and the number of &egr;-caprolacton repeating unit is 2.5 or greater on the average.
    Type: Grant
    Filed: April 26, 2001
    Date of Patent: September 9, 2003
    Assignee: Gunze Limited
    Inventors: Kenji Tomihata, Masakazu Suzuki, Ikuo Sasaki
  • Surgical suture and method for preparation thereof
    Patent number: 5797962
    Abstract: The invention relates to a surgical suture comprising a copolymer as an essential component, the copolymer consisting of lactic acid (lactide) and .epsilon.-caprolacton as repeating unit, wherein shrinkage ratio of said surgical suture is 5% or less after heat treatment at 60.degree. C. for 20 hours and method for production thereof.
    Type: Grant
    Filed: May 28, 1996
    Date of Patent: August 25, 1998
    Assignee: Gunze Limited
    Inventors: Kenji Tomihata, Ikuo Sasaki, Masakazu Suzuki