Patents by Inventor Nakamasa Hayashi

Nakamasa Hayashi 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: 8414929
    Abstract: The dried amniotic membrane is produced by drying a fresh amniotic membrane, which envelopes an embryo of an animal including human, and can be used as a substitute membrane for a membrane tissue in a living body; the dried amniotic membrane is dehydrated and dried so that the dried amniotic membrane can be stored in a dry air in a sterile state; when hydrated again by immersing in water or a buffer solution, the amniotic membrane still has an epithelial cell, a basement membrane and a connective tissue which constitute the fresh amniotic membrane. The dried amniotic membrane is useful as a medical substitute membrane for a membrane tissue in a living body such as a dura mater, a meninx, a pericardium, a pleura and a peritoneum.
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: April 9, 2013
    Assignee: National University Corporation University of Toyama
    Inventors: Toshio Nikaido, Motonori Okabe, Toshiko Yoshida, Shunro Endo, Nakamasa Hayashi, Shigeru Saito
  • Publication number: 20100098743
    Abstract: An object is to overcome the disadvantages of a conventional lyophilized amniotic membrane or the like which causes damages in a cell membrane or an amniotic membrane tissue and is therefore not suitable for use as a substitute membrane for a membrane tissue in a living body, and to provide a novel medical substitute membrane composed of a dried amniotic membrane, which can be used as a substitute membrane for a membrane tissue in a living body. The dried amniotic membrane is produced by drying a fresh amniotic membrane, which envelopes an embryo of an animal including human, and can be used as a substitute membrane for a membrane tissue in a living body; the dried amniotic membrane is dehydrated and dried so that the dried amniotic membrane can be stored in a dry air in a sterile state; when hydrated again by immersing in water or a buffer solution, the amniotic membrane still has an epithelial cell, a basement membrane and a connective tissue which constitute the fresh amniotic membrane.
    Type: Application
    Filed: February 21, 2008
    Publication date: April 22, 2010
    Inventors: Toshio Nikaido, Motonori Okabe, Toshiko Yoshida, Shunro Endo, Nakamasa Hayashi, Shigeru Saito