Patents by Inventor Helen Cui

Helen Cui 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).

  • Absorbable PEG-based hydrogels
    Patent number: 8524215
    Abstract: An absorbable PEG-based hydrogel prepared from a multi-arm-PEG-vinylsulfone having about 3 to about 8 arms and a multi-arm-PEG-R-sulfhydryl having about 3 to about 8 arms; where R is defined as an ester linkage, such as carboxylate ester, lactate ester, and isobutyrate ester have been disclosed. Additionally, sustained release compositions that are prepared from an absorbable PEG-based hydrogel and a protein have been disclosed which provide sustained release of proteins and peptides.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: September 3, 2013
    Assignee: Janssen Biotech, Inc.
    Inventors: Chee-Youb Won, Helen Cui
  • ABSORBABLE PEG-BASED HYDROGELS
    Publication number: 20120027775
    Abstract: An absorbable PEG-based hydrogel prepared from a multi-arm-PEG-vinylsulfone having about 3 to about 8 arms and a multi-arm-PEG-R-sulfhydryl having about 3 to about 8 arms; where R is defined as an ester linkage, such as carboxylate ester, lactate ester, and isobutyrate ester have been disclosed. Additionally, sustained release compositions that are prepared from an absorbable PEG-based hydrogel and a protein have been disclosed which provide sustained release of proteins and peptides.
    Type: Application
    Filed: July 29, 2011
    Publication date: February 2, 2012
    Applicant: Advanced Technologies and Regenerative Medicine, LLC
    Inventors: Chee-Youb Won, Helen Cui