Patents by Inventor Donald T. H. Tan

Donald T. H. Tan 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).

  • High refractive index interpenetrating networks for ophthalmic applications
    Publication number: 20100280147
    Abstract: Ophthalmic devices are provided based on an interpenetrating (IPN) double network hydrogel of a first network physically entangled with a second network. The first network is an entangled network of self-linked hydrophilic telechelic macromonomers and hydrophobic moieties. The second network is a hydrophilic network of crosslinked polyacrylic acid. The IPN double network hydrogels including the hydrophobic moieties are characterized by being optically clear and having refractive indices above 1.34.
    Type: Application
    Filed: May 19, 2010
    Publication date: November 4, 2010
    Inventors: Laura Hartmann, Curtis W. Frank, Jaan Noolandi, Donald T. H. Tan, Roger W. Beuerman