Patents by Inventor Paul M. Wittrock

Paul M. Wittrock 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).

  • Instrument pouch with in-pouch sterile processing indicator
    Patent number: 5344017
    Abstract: A medical instrument sterilization processing pouch is provided having a sterile processing indicator protected between the walls forming the pouch to register sterilizing processing of the medical instruments.
    Type: Grant
    Filed: August 13, 1993
    Date of Patent: September 6, 1994
    Inventor: Paul M. Wittrock
  • Gingival retraction cord with wet, drip-free astringent
    Patent number: 4617950
    Abstract: An astringent retraction cord for use in dental therapeutics is provided by coating a gingival retraction cord with an astringent gel containing an astringent salt such as aluminum potassium sulfate and a bodying agent sufficient to stiffen the salt solution to stand on the cord. The gel coated retraction cord is adapted to be inserted into the gingival sulcus to effect retraction of gingival tissue.
    Type: Grant
    Filed: April 22, 1985
    Date of Patent: October 21, 1986
    Assignee: Van R Dental Products, Inc.
    Inventors: Don D. Porteous, Paul M. Wittrock