Patents by Inventor Shinya Kiyama

Shinya Kiyama 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).

  • Method of selectively sulfating peptides
    Patent number: 5059679
    Abstract: The invention provides a method and reagent for the modification of polypeptides useful in experimental research in the area of genetic engineering starting from a polypeptide such as hCCK-33 in an unsulfated form which contains Tyr and Ser and/or Thr residues by first protecting the amino-groups in the starting polypeptide, masking the OH-groups in the Ser and/or Thr residues and selectively sulfating the OH-groups in the Tyr residues after deprotection.
    Type: Grant
    Filed: March 30, 1989
    Date of Patent: October 22, 1991
    Assignee: Shin-Etsu CHemical Co., Ltd.
    Inventors: Haruaki Yajima, Nobutaka Fujii, Shinya Kiyama