Patents by Inventor Neng S. Ung-Chhun

Neng S. Ung-Chhun 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).

  • Medical devices and products having coatings applied thereto
    Patent number: 7422606
    Abstract: Medical devices and methods of producing same are provided. The medical device comprising a body member and a coating on at least a portion of the body member comprising an insitu condensation product of a first electrophilically active, high molecular weight polyalkylene oxide and a second high molecular weight polyoxyalkylene derivative.
    Type: Grant
    Filed: October 3, 2003
    Date of Patent: September 9, 2008
    Assignee: Edwards Lifesciences Corporation
    Inventors: Neng S. Ung-Chhun, Richard J. Johnson, Dean Laurin, Crystal M. Cunanan
  • Method for producing medical devices and devices so produced
    Patent number: 6746482
    Abstract: Medical devices and methods of producing same are provided. The medical device comprising a body member and a coating on at least a portion of the body member comprising a polyalkylene oxide and a functional group, preferably heparin, magainin, or chlorhexidine.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: June 8, 2004
    Assignee: Baxter International Inc.
    Inventor: Neng S. Ung-Chhun
  • Method for producing improved medical devices and devices so produced
    Publication number: 20040068225
    Abstract: Medical devices and methods of producing same are provided. The medical device comprising a body member and a coating on at least a portion of the body member comprising an insitu condensation product of a first electrophilically active, high molecular weight polyalkylene oxide and a second high molecular weight polyoxyalkylene derivative.
    Type: Application
    Filed: October 3, 2003
    Publication date: April 8, 2004
    Inventors: Neng S. Ung-Chhun, Richard J. Johnson, Dean Laurin, Crystal M. Cunanan
  • Method for producing improved medical devices and devices so produced
    Patent number: 6648922
    Abstract: Medical devices and methods of producing same are provided. The medical device comprising a body member and a coating on at least a portion of the body member comprising an insitu condensation product of a first electrophilically active, high molecular weight polyalkylene oxide and a second high molecular weight polyoxyalkylene derivative.
    Type: Grant
    Filed: February 21, 2001
    Date of Patent: November 18, 2003
    Assignee: Baxter International Inc.
    Inventors: Neng S. Ung-Chhun, Richard J. Johnson, Dean Laurin, Crystal M. Cunanan
  • Method for producing medical devices and devices so produced
    Publication number: 20020198590
    Abstract: Medical devices and methods of producing same are provided. The medical device comprising a body member and a coating on at least a portion of the body member comprising a polyalkylene oxide and a functional group, preferably heparin, magainin, or chlorhexidine.
    Type: Application
    Filed: November 9, 2001
    Publication date: December 26, 2002
    Inventor: Neng S. Ung-Chhun
  • Method for producing improved medical devices and devices so produced
    Patent number: 6306454
    Abstract: Medical devices and methods of producing same are provided. The medical device comprising a body member and a coating on at least a portion of the body member comprising an insitu condensation product of a first electrophilically active, high molecular weight polyalkylene oxide and a second high molecular weight polyoxyalkylene derivative.
    Type: Grant
    Filed: September 1, 1999
    Date of Patent: October 23, 2001
    Assignee: Baxter International Inc.
    Inventors: Neng S. Ung-Chhun, Richard J. Johnson, Dean Laurin, Crystal M. Cunahan
  • Method for producing improved medical devices and devices so produced
    Publication number: 20010012538
    Abstract: Medical devices and methods of producing same are provided. The medical device comprising a body member and a coating on at least a portion of the body member comprising an insitu condensation product of a first electrophilically active, high molecular weight polyalkylene oxide and a second high molecular weight polyoxyalkylene derivative.
    Type: Application
    Filed: February 21, 2001
    Publication date: August 9, 2001
    Inventors: Neng S. Ung-Chhun, Richard J. Johnson, Dean Laurin, Crystal M. Cunanan
  • Method of filtering a fluid suspension with a membrane having a particular coating
    Patent number: 6045701
    Abstract: Novel blood cell fractionation devices are provided. The device utilizes filters coated with high molecular weight polyethylene oxide derivatives cross-linked to prevent leaching from filter surfaces. These filters have a special efficacy in preventing protein adsorption and cellular adhesion to the membrane filter.
    Type: Grant
    Filed: May 6, 1998
    Date of Patent: April 4, 2000
    Assignee: Baxter International Inc.
    Inventors: Neng S. Ung-Chhun, Richard J. Johnson
  • Blood cell separation devices having a membrane with particular coating
    Patent number: 5972217
    Abstract: Blood filtration devices and methods of filtering are disclosed. In part, a blood filtration device is provided comprising a housing defining an interior periphery. The device includes a rotating structure mounted within the interior periphery and defining with the housing an annular gap within the interior periphery, an inlet fluid path for allowing a blood product to flow into the annular gap, and the rotating structure including an exterior surface that includes a filter membrane. The filter membrane has a coating thereon comprising an insitu condensation product of a first electrophilically active, high molecular weight polyalkylene oxide and a second high molecular weight bifunctional diamino-polyoxyalkylene oxide derivative.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: October 26, 1999
    Assignee: Baxter International Inc.
    Inventors: Neng S. Ung-Chhun, Richard J. Johnson
  • Method of separating leukocytes from blood cells using a leukodepletion filter
    Patent number: 5795483
    Abstract: Novel blood cell fractionation means utilizes conventional filters coated with high molecular weight polyethylene oxide derivatives crosslinked to prevent leaching from filter surfaces. These fractionation means have a special efficacy in binding white blood cells from whole blood while simultaneously allowing red cells and platelets to pass in the effluent phase.
    Type: Grant
    Filed: March 4, 1997
    Date of Patent: August 18, 1998
    Assignee: Baxter International Inc.
    Inventors: Neng S. Ung-Chhun, Richard J. Johnson
  • Whole blood leukodepletion and platelet filter
    Patent number: 5647985
    Abstract: Novel blood cell fractionation means utilizes conventional filters coated with high molecular weight polyethylene oxide derivatives crosslinked to prevent leaching from filter surfaces. These fractionation means have a special efficacy in binding white blood cells from whole blood while simultaneously allowing red cells and platelets to pass in the effluent phase.
    Type: Grant
    Filed: October 17, 1994
    Date of Patent: July 15, 1997
    Assignee: Baxter International Inc.
    Inventors: Neng S. Ung-Chhun, Richard J. Johnson