Patents by Inventor Maureen K. Ruskin

Maureen K. Ruskin 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).

  • Process for preparing toners surface coated with antistatic agent and liquid slip agent
    Patent number: 4661439
    Abstract: Efficient, lower cost process for preparing dry, nonelectroscopic toners surface coated with antistatic agent and liquid slip agent, utilizing a pressure filter and a planetary mixer. The toners are useful for developing positive- or negative-working photosensitive elements and having imagewise tacky and nontacky surfaces.
    Type: Grant
    Filed: December 6, 1985
    Date of Patent: April 28, 1987
    Assignee: E.I. De Pont de Nemours and Company
    Inventor: Maureen K. Ruskin