Patents by Inventor Stephen D. Rigby

Stephen D. Rigby 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).

  • Processing radiation sensitive members with aqueous ethyl hexyl sulphate treatment prior to burn-in step
    Patent number: 5180654
    Abstract: In a process for treating a radiation sensitive member which includes image-wise exposure to radiation, development and burning-in of the member, after the development and prior to the burning-in, an aqueous solution including ethyl hexyl sulphate is applied to the member.
    Type: Grant
    Filed: September 18, 1991
    Date of Patent: January 19, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Stephen D. Rigby, Paul A. Styan