Patents by Inventor David Pregozen

David Pregozen 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: 5141803
    Abstract: An aqueous composition for impregnating a nonwoven wipe having a pH of from 3.5 to 4.5 and containing a preservative system comprising potassium sorbate, citric acid, disodium EDTA and a cationic biocide selected from polyhexamethylene biguanide hydrochloride and poly[oxyethylene(dimethyliminio)ethylene(dimethyliminio)ethylene dichloride]; and a moistened wipe, impregnated with the aqueous composition, useful for cleaning or delivering active ingredients to animate and inanimate surfaces.
    Type: Grant
    Filed: August 20, 1991
    Date of Patent: August 25, 1992
    Assignee: Sterling Drug, Inc.
    Inventor: David Pregozen
  • Patent number: 4666621
    Abstract: A pre-moistened wipe for cleaning hard surfaces to a shiny, substantially streak-free and lint-free finish comprising a flexible substrate of a mechanically bonded nonwoven material containing wood pulp and synthetic fibers having incorporated therein a low level of an acrylic polymer and impregnated with a liquid cleaning solution having a surface tension less than 40 dynes/cm and comprising an anionic, nonionic, cationic, zwitterionic or amphoteric surface active agent, a monohydric aliphatic alcohol of 1 to 6 carbon atoms and demineralized water.
    Type: Grant
    Filed: April 2, 1986
    Date of Patent: May 19, 1987
    Assignee: Sterling Drug Inc.
    Inventors: William A. Clark, David Pregozen
  • Patent number: 4559151
    Abstract: Antistatic and fabric softener compositions for application to textile fabrics comprises a combination of an N,N-dialkyl-N,N-di-lower-alkyl quaternary ammonium salt either alone or in combination with an N-long-chain alkylamido-lower-alkyl-N,N-di-lower-alkyl-N-R.sub.4 '-quaternary ammonium salt and critical amounts of a lactic acid salt and the method of use of such compositions for treating textile fabrics.
    Type: Grant
    Filed: May 7, 1984
    Date of Patent: December 17, 1985
    Assignee: Sterling Drug Inc.
    Inventors: David Pregozen, John J. Hiller, Jr.