Patents by Inventor Ming D. Zhu

Ming D. Zhu 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).

  • Electrophoretic sieving in gel-free media with dissolved polymers
    Patent number: 5089111
    Abstract: Separation of sample ions on the basis of molecular size is achieved by electrophoresis in an aqueous solution containing a dissolved non-crosslinked polymer. The polymer has a molecular weight range which overlaps that of the sample ions being separated. Species which vary in molecular weight but not in charge/mass ratio are separated by this method, which is of particular interest in high performance electrophoresis in capillary columns where the use of gels would be awkward and inconvenient.
    Type: Grant
    Filed: September 27, 1990
    Date of Patent: February 18, 1992
    Assignee: Bio-Rad Laboratories, Inc.
    Inventors: Ming D. Zhu, Jeng-Chyh Chen, Stellan Hjerten