Patents by Inventor Che-Youb Won

Che-Youb Won 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).

  • Dextran-maleic acid monoesters and hydrogels based thereon
    Patent number: 6476204
    Abstract: Biodegradable hydrogels are formed by photocrosslinking dextran-maleic acid monoesters in which the average degree of substitution of each glucose unit of each &agr;-D-glucopyranosyl of dextran by maleic acid ranges from 0.60 to 1.6 and which have a weight average molecular weight ranging from 40,000 to 80,000 on a dextran basis. The hydrogels at pH 7 have maximum swelling ratios ranging from 500 to 1,500 percent. The hydrogels are characterized by increase in swelling ratio as average degree of substitution increases. The hydrogels are useful, for example, for drug delivery and solubility enhancers of drugs, as protective encapsulators of viruses used in gene therapy, and for conventional uses of hydrogels.
    Type: Grant
    Filed: January 19, 2001
    Date of Patent: November 5, 2002
    Assignee: Cornell Research Foundation, Inc.
    Inventors: Sin-Hee Kim, Che-Youb Won, Chih-Chang Chu