Patents by Inventor Rao D. Mikkilineni

Rao D. Mikkilineni 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).

  • Polyester toner composition for electrophotographic imaging systems
    Patent number: 6090973
    Abstract: This invention provides a free-flowing polyester dye powder which has superior stability and transparency for application in electro-photographic imaging systems. In another embodiment this invention provides novel chromophoric diester monomers which are reacted with diol monomers to form an invention polyester dye. A present invention toner composition comprises particulate polyester dye, and one or more optional components such as a charge control agent or a surfactant.
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: July 18, 2000
    Assignee: Hoechst Celanese Corporation
    Inventors: Marie Borzo, Kophu Chiang, Eui-Won Choe, Rao D. Mikkilineni, Hyun-Nam Yoon
  • Polyester toner composition for electrophotographic imaging systems
    Patent number: 6090516
    Abstract: This invention provides a free-flowing polyester dye powder which has superior stability and transparency for application in electrophotographic imaging systems. In another embodiment this invention provides novel chromophoric diester monomers which are reacted with diol monomers to form an invention polyester dye. A present invention toner composition comprises particulate polyester dye, and one or more optional components such as a charge control agent or a surfactant.
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: July 18, 2000
    Assignee: Hoechst Celanese Corporation
    Inventors: Eui-Won Choe, Rao D. Mikkilineni, Hyun-Nam Yoon, Marie Borzo, Kophu Chiang
  • Polyester toner composition for electrophotographic imaging systems
    Patent number: 6001980
    Abstract: This invention provides a free-flowing polyester dye powder which has superior stability and transparency for application in electro-photographic imaging systems. In another embodiment this invention provides novel chromophoric diester monomers which are reacted with diol monomers to form an invention polyester dye. A present invention toner composition comprises particulate polyester dye, and one or more optional components such as a charge control agent or a surfactant.
    Type: Grant
    Filed: September 3, 1997
    Date of Patent: December 14, 1999
    Assignee: Hoechst Celanese Corporation
    Inventors: Marie Borzo, Rao D. Mikkilineni, Kophu Chiang, Eui-Won Choe, Hyun-Nam Yoon
  • Polyester toner microspheres for electrophotographic imaging systems
    Patent number: 5843609
    Abstract: This invention provides a free-flowing polyester dye microspheric powder which has superior stability and transparency for application in electrophotographic imaging systems. In another embodiment this invention provides a non-aqueous dispersion polymerization process for producing the invention polyester dye microspheric powder. A present invention toner composition comprises polyester dye microspheric powder, and one or more optional ingredients such as a charge control agent or a surfactant.
    Type: Grant
    Filed: September 3, 1997
    Date of Patent: December 1, 1998
    Assignee: Hoechst Celanese Corp.
    Inventors: Marie Borzo, Kophu Chiang, Eui-Won Choe, Rao D. Mikkilineni, Hyun-Nam Yoon