Patents by Inventor Robin M. Donald

Robin M. Donald 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).

  • Patent number: 6663956
    Abstract: An antistatic polymer film having a coated surface that resists the formation of static. The antistatic coating on the film layer includes a polythiophene, a surfactant and water. The ratio of the surfactant to the polythiophene can be at least about 1:1 by weight of said coating. In addition, the coating can contain less than about 1 percent by weight of polymeric binder and can also contain less than about 1 percent by weight of organic solvent.
    Type: Grant
    Filed: April 10, 2002
    Date of Patent: December 16, 2003
    Assignee: Mitsubishi Polyerster Film, LLC
    Inventors: John M. Heberger, Robin M. Donald
  • Publication number: 20030035947
    Abstract: An antistatic polymer film having a coated surface that resists the formation of static. The antistatic coating on the film layer includes a polythiophene, a surfactant and water. The ratio of the surfactant to the polythiophene can be at least about 1:1 by weight of said coating. In addition, the coating can contain less than about 1 percent by weight of polymeric binder and can also contain less than about 1 percent by weight of organic solvent.
    Type: Application
    Filed: April 10, 2002
    Publication date: February 20, 2003
    Inventors: John M. Heberger, Robin M. Donald
  • Patent number: 6455142
    Abstract: The present invention provides a coated polymer film having an essentially streak-free coated surface that resists the formation of fog. The film includes a self-supporting polymer film layer, and an anti-fog coating on the film layer. The anti-fog coating, which can also be applied to alternate substrates, consisting essentially of a copolyester binder and an anionic surfactant, wherein the surfactant contains less than about 0.5 weight percent of a fluorosurfactant. A slip agent can also be included in the anti-fog coating.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: September 24, 2002
    Assignee: Mitsubishi Polyester Film, LLC
    Inventors: John M. Heberger, Robin M. Donald, Jan C. Westermeier, F. Gene Funderburk, John G. Rollins
  • Patent number: 5607777
    Abstract: The present invention discloses a subbing coating composition for polyester films comprising:I polymer A having attached to its backbonecarboxyl groups and/orgroups which form carboxyl groups upon hydrolysis anda polymer B having attached to its backbone --SO.sub.3 X and/or --PO.sub.3 XY groups, whereinX and Y are identical or different and denote an alkali metal, ammonium or hydrogenorII a polymer A' having attached to its backbonecarboxyl groups and/or groups which form carboxyl groups upon hydrolysis, and--SO.sub.3 X and/or --PO.sub.3 XY groups, wherein X and Y are identical or different and denote an alkali metal, ammonium or hydrogenandIII an organic compound C having at least two free hydroxy groups, wherein the coating composition does not comprise addition polymerizable compounds.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 4, 1997
    Assignee: Hoechst Celanese Corporation
    Inventors: James J. Krejci, John M. Heberger, Cathy R. Moore, Robin M. Donald
  • Patent number: 5562997
    Abstract: The present invention discloses a subbing coating composition for polyester films comprising:I - a polymer A having attached to its backbone- carboxyl groups and/or- groups which form carboxyl groups upon hydrolysis and- a polymer B having attached to its backbone --SO.sub.3 X and/or --PO.sub.3 XY groups, whereinX and Y are identical or different and denote an alkali metal, ammonium or hydrogenorII - a polymer A' having attached to its backbone- carboxyl groups and/or groups which form carboxyl groups upon hydrolysis, and- --SO.sub.3 X and/or --PO.sub.3 XY groups, whereinX and Y are identical or different and denote an alkali metal, ammonium or hydrogenandIII - an organic compound C having at least two free hydroxy groups, wherein the coating composition does not comprise addition polymerizable compounds.
    Type: Grant
    Filed: July 21, 1995
    Date of Patent: October 8, 1996
    Assignee: Hoechst Celanese Corporation
    Inventors: James J. Krejci, John M. Heberger, Cathy R. Moore, Robin M. Donald