Patents by Inventor Hiroyuki Ikumura

Hiroyuki Ikumura 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).

  • Solution and solid phase synthesis of pyrrolinones and polypyrrolinones
    Patent number: 7772159
    Abstract: The invention provides a new process for the preparation of polypyrrolinones (I) of various sizes which have found to be useful peptidomimetics. One aspect of the invention is a new process utilizing ?-amino-?-substituted-valerolactones as synthons. A second aspect of the invention is a process for the synthesis of polypyrrolinones using solid-phase techniques.
    Type: Grant
    Filed: July 20, 2004
    Date of Patent: August 10, 2010
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: Amos B. Smith, III, Hu Liu, Hiroyuki Ikumura, Ralph F. Hirschmann
  • Solution and solid phase synthesis of pyrrolinones and polypyrrolinones
    Patent number: 6891046
    Abstract: The invention provides a new process for the preparation of polypyrrolinones (I) of various sizes which have found to be useful peptidomimetics. One aspect of the invention is a new process utilizing ?-amino-?-substituted-valerolactones as synthons. A second aspect of the invention is a process for the synthesis of polypyrrolinones using solid-phase techniques.
    Type: Grant
    Filed: April 25, 2001
    Date of Patent: May 10, 2005
    Inventors: Amos B. Smith, III, Ralph F. Hirschmann, Hu Liu, Hiroyuki Ikumura
  • Solution and solid phase synthesis of pyrrolinones and polypyrrolinones
    Publication number: 20050004371
    Abstract: The invention provides a new process for the preparation of polypyrrolinones (I) of various sizes which have found to be useful peptidomimetics. One aspect of the invention is a new process utilizing ?-amino-?-substituted-valerolactones as synthons. A second aspect of the invention is a process for the synthesis of polypyrrolinones using solid-phase techniques.
    Type: Application
    Filed: July 20, 2004
    Publication date: January 6, 2005
    Inventors: Amos Smith, Ralph Hirschmann, Hu Liu, Hiroyuki Ikumura
  • New solution and solid phase synthesis of pyrrolinones and polypyrrolinones
    Publication number: 20020133027
    Abstract: The invention provides a new process for the preparation of polypyrrolinones (I) of various sizes which have found to be useful peptidomimetics. One aspect of the invention is a new process utilizing &agr;-amino-&agr;-substituted-valerolactones as synthons. A second aspect of the invention is a process for the synthesis of polypyrrolinones using solid-phase techniques.
    Type: Application
    Filed: April 25, 2001
    Publication date: September 19, 2002
    Inventors: Amos B. Smith, Ralph F. Hirschmann, Hu Liu, Hiroyuki Ikumura