Patents by Inventor Nancy J. Kapp

Nancy J. Kapp 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).

  • Surfanctants for reducing bacterial adhesion onto surfaces
    Patent number: 6039965
    Abstract: A method for inhibiting microbial colonization of a surface in contact with an aqueous system is disclosed, which comprises adding to the system an amount of at least one compound including repeating ethylene oxide units.
    Type: Grant
    Filed: September 15, 1997
    Date of Patent: March 21, 2000
    Assignee: Calgon Corporation
    Inventors: Rodney M. Donlan, David L. Elliot, Nancy J. Kapp, Christopher L. Wiatr, Paul A. Rey
  • Synergistic antimicrobial composition of N-decyl-N-isononyl-N,N-dimethyl ammonium chloride and 2-(decylthio) ethanamine
    Patent number: 5684048
    Abstract: Synergistic antimicrobial combinations comprising N-decyl-N-isononyl-N,N-dimethyl ammonium chloride and 2-(decylthio)ethanamine, or an acid salt therof, are disclosed. Methods for inhibiting microbial growth using these synergistic antimicrobial combinations are also disclosed.
    Type: Grant
    Filed: May 2, 1996
    Date of Patent: November 4, 1997
    Assignee: Calgon Corporation
    Inventors: Kevin I. Ajoku, Nancy J. Kapp
  • Synergistic antimicrobial composition of N-?(dichlorofluoromethyl)thio!-N',N'-dimethyl-N-phenylsulfamide and alkylguanidine compounds
    Patent number: 5677345
    Abstract: Synergistic antimicrobial combinations comprising N-?(dichlorofluoromethyl)thio!-N',N'-dimethyl-N-phenylsulfamide and an alkylguanidine compound, preferably dodecylguanidine hydrochloride, are disclosed. Methods for inhibiting microbial growth using these synergistic antimicrobial combinations are also disclosed.
    Type: Grant
    Filed: March 29, 1996
    Date of Patent: October 14, 1997
    Assignee: Calgon Corporation
    Inventors: Kevin I. Ajoku, Nancy J. Kapp
  • Synergistic antimicrobial composition of N-decyl-N-isononyl-N,N-dimethyl ammonium chloride and alkylguanidine compounds
    Patent number: 5663206
    Abstract: Synergistic antimicrobial combinations comprising N-decyl-N-isononyl-N,N-dimethyl ammonium chloride and an alkylguanidine compound, preferably dodecylguanidine hydrochloride, are disclosed. Methods for inhibiting microbial growth using these synergistic antimicrobial combinations are also disclosed.
    Type: Grant
    Filed: May 2, 1996
    Date of Patent: September 2, 1997
    Assignee: Calgon Corporation
    Inventors: Kevin I. Ajoku, Nancy J. Kapp
  • Synergistic antimicrobial composition of N-decy-N-isononyl-N,N-dimethyl ammonium chloride and 2-bromo-2-nitropropane-1,3-diol
    Patent number: 5656670
    Abstract: Synergistic antimicrobial combinations comprising N-decyl-N-isononyl-N,N-dimethyl ammonium chloride and 2-bromo-2-nitropropane-1,3,-diol, are disclosed. Methods for inhibiting microbial growth using these synergistic antimicrobial combinations are also disclosed.
    Type: Grant
    Filed: May 2, 1996
    Date of Patent: August 12, 1997
    Assignee: Calgon Corporation
    Inventors: Kevin I. Ajoku, Nancy J. Kapp
  • Smoke and pollutant filtering device
    Patent number: 4382440
    Abstract: A smoke and pollutant filtering device comprising a mask having a filter composed of a series of contiguous, serial layers of filtering material. The filter consists of front and rear gas permeable covers, a first filter layer of pressed vegetable matter, a second filter layer comprising a layer of activated charcoal adjacent a layer of aqua filter floss, a third filter comprising a gas permeable cloth situated between layers of pressed vegetable matter, and a fourth filter layer comprising an aqua filter floss. The first through fourth filter layers are sandwiched between the front and rear gas permeable covers. The filtering device is stitched together and mounted within a fire-retardant hood shaped to fit over a human head. Elastic bands are included in the hood to maintain the hood snugly about the head when worn.
    Type: Grant
    Filed: March 18, 1981
    Date of Patent: May 10, 1983
    Inventors: Nancy J. Kapp, Charles H. Bennett