Patents by Inventor Nancy Johnston

Nancy Johnston 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).

  • Composition and process for treating fabrics in clothes dryers
    Patent number: 5128053
    Abstract: This invention relates to compositions for use in automatic laundry dryers comprising at least one piperazine compound of the formula: ##STR1## wherein A is ##STR2## or ##STR3## Y is --O-- or --NR.sub.4 --; Z is alkylene containing 2 to 6 carbon atoms in the principal chain and a total of up to 8 carbon atoms;R is alkyl containing from about 8 to about 30 carbon atoms and may contain at least one of --S--, --O--, ##STR4## CONR.sub.4, epoxy and double bond in the chain; R.sub.2 is alkyl containing up to about 30 carbon atoms and may contain at least one of --S--, --O--, ##STR5## --CONR.sub.4 --, epoxy and double bond in the chain; and R.sub.3 and R.sub.4 are each H or lower alkyl;with the proviso that the total number of carbon atoms in the acyl R and R.sub.2 groups is at least 18;X is a salt-forming anion; R.sub.1 is H, lower alkyl, hydroxylower- alkyl or benzyl; and n is an integer from 1 to 4.
    Type: Grant
    Filed: February 6, 1991
    Date of Patent: July 7, 1992
    Assignee: Sherex Chemical Company, Inc.
    Inventors: Gene A. Gummo, Gary W. Earl, Nancy Johnston