Patents by Inventor Robert R. Schultz

Robert R. Schultz 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: 6046228
    Abstract: The present invention is directed to pharmaceutical compositions including a saturated 1,2-dithiaheterocyclic compound having antiviral activity. The present invention also provides a kit containing the pharmaceutical composition and methods of treating or preventing viral disease using the composition, as well as methods for inactivating retrovirus in a body fluid.
    Type: Grant
    Filed: January 4, 1999
    Date of Patent: April 4, 2000
    Assignee: The United States of America as represented by the Department of Health and Human Services
    Inventors: William G. Rice, Robert R. Schultz, David C. Baker, Louis E. Henderson
  • Patent number: 5045445
    Abstract: A process for the in-line preparation of gelatin solutions comprising(a) mixing gelatin particles with an aqueous solution to wet the gelatin forming a gelatin-aqueous solution mixture,(b) heating rapidly said mixture to a temperature capable of digesting gelatin in said mixture, and(c) maintaining the digested gelatin at said temperature for a period to dissolve the gelatin particles into the aqueous solution.The process provides gelatin solutions for photographic uses in an improved manner without the general dissolution problems. The process is quick and is accomplished in-line, preferably continuously.
    Type: Grant
    Filed: June 29, 1990
    Date of Patent: September 3, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Robert R. Schultz