Patents by Inventor William W. Schmidt

William W. Schmidt 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: 4652390
    Abstract: This invention relates to an improved, premeasured, through the wash, dry laundry active product comprised of an oxidation resistant tissue and dry laundry actives contained therein. The oxidation resistant (OR) tissue is particularly useful as a durable substrate and a convenient vehicle for delivering laundry additives to a wash liquor comprising bleach. The improved products of this invention are storage stable, deliver premeasured actives and survive the wash without tearing or shredding.
    Type: Grant
    Filed: June 25, 1985
    Date of Patent: March 24, 1987
    Assignee: The Procter & Gamble Company
    Inventors: Norman A. Strampach, Vincent L. Cerchio, Jr., William W. Schmidt
  • Patent number: 4603176
    Abstract: Temporary wet strength resin polymers having the formula ##STR1## wherein A is a polar, non-nucleophilic unit which does not cause said resin polymer to become water-insoluble; B is a hydrophilic, cationic unit which inparts a positive charge to the resin polymer; each R is H, C.sub.1 -C.sub.4 alkyl or halogen;wherein the mole percent of W is from about 5% to about 95%; the mole percent of X is from about 3% to about 65%; the mole percent of Y is from about 1% to about 20%; and the mole percent of Z is from about 1% to about 10%; said resin polymer having a molecular weight of from about 5,000 to about 200,000. These resins, when incorporated into paper products provide good dry and initial wet tensile strength together with excellent wet tensile decay.
    Type: Grant
    Filed: June 25, 1985
    Date of Patent: July 29, 1986
    Assignee: The Procter & Gamble Company
    Inventors: David W. Bjorkquist, William W. Schmidt
  • Patent number: H1559
    Abstract: The present invention relates to light duty liquid detergent compositions containing one or more secondary alkyl sulfate surfactant components.
    Type: Grant
    Filed: August 25, 1993
    Date of Patent: July 2, 1996
    Assignee: Shell Oil Company
    Inventors: Nelson E. Prieto, JanElsa E. Carty, Ruth J. Blanco, William W. Schmidt