Patents by Inventor Noriko Tsuzuki

Noriko Tsuzuki 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).

  • Physiologically active substance well capable of permeating biomembrane
    Patent number: 5652335
    Abstract: A physiologically active substance well capable of permeating biomembrane according to the present invention is represented by: ##STR1## where R represents a residue of a physiologically active substance comprising a peptide, amino acid, aliphatic amine having a phenol skeleton, amino sugar, nucleoside or lactam compound and a residue of physiologically active derivative thereof. The biomembrane permeability of a substance with poor biomembrane permeability can be improved by introducing an adamantyl group to the physiologically active substance.
    Type: Grant
    Filed: April 15, 1994
    Date of Patent: July 29, 1997
    Assignee: Teikoku Seiyaku Kabushiki Kaisha
    Inventors: Kouki Kitagawa, Toru Hibi, Noriko Tsuzuki