Patents by Inventor Walter Mychajlowski

Walter Mychajlowski 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).

  • Chemically prepared core shell toner formulation including a borax coupling agent and a plasticizing agent in the core
    Patent number: 9671709
    Abstract: A chemically prepared toner composition according to one example embodiment includes a core including a first polymer binder, a second polymer binder, a colorant and a release agent; a shell that is formed around the core and includes a third polymer binder; and a borax coupling agent between the core and the shell. The first and third polymer binders are different amorphous polyester resins. The second polymer binder is a crystalline polyester resin and acts as a plasticizing agent in the core. The borax coupling agent assists in adhering the shell to the outer surface of the core. Optionally, the toner of the present invention may be finished with a set of extra particulate additives.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: June 6, 2017
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Jing Sun, Kasturi Rangan Srinivasan, John Joseph Kraseski, Trent Duane Peter, Walter Mychajlowski, Tao Yu
  • Chemically Prepared Core Shell Toner Formulation Including a Borax Coupling Agent and a Plasticizing Agent in the Core
    Publication number: 20160154333
    Abstract: A chemically prepared toner composition according to one example embodiment includes a core including a first polymer binder, a second polymer binder, a colorant and a release agent; a shell that is formed around the core and includes a third polymer binder; and a borax coupling agent between the core and the shell. The first and third polymer binders are different amorphous polyester resins. The second polymer binder is a crystalline polyester resin and acts as a plasticizing agent in the core. The borax coupling agent assists in adhering the shell to the outer surface of the core. Optionally, the toner of the present invention may be finished with a set of extra particulate additives.
    Type: Application
    Filed: December 31, 2013
    Publication date: June 2, 2016
    Applicant: Lexmark International, Inc.
    Inventors: Jing Sun, Kasturi Rangan Srinivasan, John Joseph Kraseski, Trent Duane Peter, Walter Mychajlowski, Tao Yu