Patents by Inventor Ward M. Smith

Ward M. Smith 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).

  • Effervescent bath tablet compositions
    Patent number: 5958454
    Abstract: The present invention relates to effervescent bath tablet compositions that contain an organic acid, sodium bicarbonate, sodium carbonate, and a salt of a fatty acid. These invention bath tablet compositions characteristically exhibit low dissolution rates in warm water.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: September 28, 1999
    Assignee: R&D Ventures, Inc.
    Inventors: David O. Schrempf, Ward M. Smith
  • Hemiphosphate hemihydrate of 2-(1-pentyl-3-guanidino)-4-(2-methyl-4-imidazolyl)thiazole
    Patent number: 5387597
    Abstract: The hemiphosphate hemihydrate salt of 2-(1-pentyl-3-guanidino)-4-(2-methyl-4-imidazolyl)thiazole is the preferred salt of this antiulcer agent.
    Type: Grant
    Filed: June 18, 1992
    Date of Patent: February 7, 1995
    Assignee: Pfizer Inc.
    Inventors: Troy A. Appleton, Ward M. Smith