Patents by Inventor Robert W. Schumacher

Robert W. Schumacher 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).

  • Method for deodorizing hypochlorite denture cleansing solutions and product containing a delayed release hypochlorite deactivator
    Patent number: 4552679
    Abstract: A denture cleansing composition of the hypochlorite type is rendered substantially free of hypochlorite chlorine odor by incorporating into the composition a hypochlorite deactivator. The deactivator is released into the cleansing solution at a controlled rate to optimize cleansing efficacy at a reduced hypochlorite/chlorine odor. The deactivators suitable for use in this invention include sodium perborate monohydrate and sodium nitrite. The preferred method of controlling deactivator release rate is by encapsulating the deactivator.
    Type: Grant
    Filed: March 16, 1984
    Date of Patent: November 12, 1985
    Assignee: Warner-Lambert Company
    Inventors: Alexander M. Schobel, Robert W. Schumacher
  • Two color chewing gum
    Patent number: D271439
    Type: Grant
    Filed: December 12, 1980
    Date of Patent: November 22, 1983
    Assignee: Warner-Lambert Co.
    Inventor: Robert W. Schumacher