Patents by Inventor Hongdong Roy Tan

Hongdong Roy 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).

  • Dynamic coating with linear polymer mixture for electrophoresis
    Patent number: 6787016
    Abstract: Compositions and methods are provided for performing capillary electrophoresis using a composition comprising in combination in an aqueous buffered medium a coating polymer and a sieving polymer, where the sieving polymer is more hydrophilic than the coating polymer and is present in greater amount. Of particular interest are uncrosslinked acrylamide polymer mixtures for coating plastic channels and providing sieving for performing DNA separations in microfluidic devices. Polyacrylamide or N,N-dimethyl acrylamide is used with a N,N-dialkyl acrylamide copolymer, either separately or together for sieving and coating, serving as the medium in capillary electrophoresis DNA separations.
    Type: Grant
    Filed: May 1, 2001
    Date of Patent: September 7, 2004
    Assignee: Aclara Biosciences, Inc.
    Inventors: Hongdong Roy Tan, Alexander Sassi, Ingrid Cruzado
  • Dynamic coating with linear polymer mixture for electrophoresis
    Publication number: 20020029968
    Abstract: Compositions and methods are provided for performing capillary electrophoresis using a composition comprising in combination in an aqueous buffered medium a coating polymer and a sieving polymer, where the sieving polymer is more hydrophilic than the coating polymer and is present in greater amount. Of particular interest are uncrosslinked acrylamide polymer mixtures for coating plastic channels and providing sieving for performing DNA separations in microfluidic devices. Polyacrylamide or N,N-dimethyl acrylamide is used with a N,N-dialkyl acrylamide copolymer, either separately or together for sieving and coating, serving as the medium in capillary electrophoresis DNA separations.
    Type: Application
    Filed: May 1, 2001
    Publication date: March 14, 2002
    Applicant: Aclara BioSciences, Inc.
    Inventors: Hongdong Roy Tan, Alexander Sassi, Ingrid Cruzado