Patents by Inventor Karen Winkowski

Karen Winkowski 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).

  • Stable, neutral pH VOC-free biocidal compositions of 1,2-benzisothiazolin-3-one
    Publication number: 20050220830
    Abstract: What is described herein is a neutral pH, VOC-free biocidal composition of 1,2-benzisothiazolin-3-one which is stable at low temperatures for an extended period of time. The compositions are particularly advantageous in use in protecting latex, paint, coating, cosmetic and personal care formulations against microbiological spoilage.
    Type: Application
    Filed: April 6, 2004
    Publication date: October 6, 2005
    Inventors: Xianbin Liu, Karen Winkowski
  • Biocidal mixture of 2-propenal-releasing polymer and isothiazolones
    Patent number: 6902727
    Abstract: A synergistic biocidal composition comprising a mixture of 2-propenal polymer (APC) and 5-chloro-2-methyl-4-isothiazoline-3-one (CIT) and 2-methyl-4-isothiazoline-3-one (MIT).
    Type: Grant
    Filed: April 10, 2003
    Date of Patent: June 7, 2005
    Assignee: ISP Investments Inc.
    Inventors: Liu Xianbin, Karen Winkowski
  • Antimicrobial oxazolidine/iodopropynyl-butyl carbamate composition containing less than 0.1wt% free formaldehyde
    Publication number: 20040157899
    Abstract: This invention relates to a broad spectrum antimicrobial composition, effective against gram negative and gram positive bacteria and fungi, which comprises a synergistic composition comprising iodopropynyl butyl carbamate and a bicyclic hydroxymethyl oxazolidine containing less than 0.1% of free formaldehyde.
    Type: Application
    Filed: February 2, 2004
    Publication date: August 12, 2004
    Applicant: ISP INVESTMENTS INC.
    Inventors: John J. Merianos, Paul Garelick, Susan Lindstrom, Xianbin Liu, Karen Winkowski
  • Antimicrobial oxazolidine/iodopropynyl-butyl carbamate composition containing less than 0.1 wt%free formaldehyde
    Publication number: 20040152749
    Abstract: This invention relates to a broad spectrum antimicrobial composition, effective against gram negative and gram positive bacteria and fungi, which comprises a synergistic composition comprising iodopropynyl butyl carbamate and a bicyclic oxazolidine containing less than 0.1% of free formaldehyde.
    Type: Application
    Filed: February 4, 2003
    Publication date: August 5, 2004
    Applicant: ISP INVESTMENTS INC.
    Inventors: John J. Merianos, Paul Garelick, Susan Lindstrom, Xianbin Liu, Karen Winkowski
  • Biocidal mixture of 2-propenal-releasing polymer and isothiazolones
    Publication number: 20030211074
    Abstract: A synergistic biocidal composition comprising a mixture of 2-propenal polymer (APC) and 5-chloro-2-methyl-4-isothiazoline-3-one (CIT) and 2-methyl-4-isothiazoline-3-one (MIT).
    Type: Application
    Filed: April 10, 2003
    Publication date: November 13, 2003
    Inventors: Liu Xianbin, Karen Winkowski
  • Liquid compositions of IPBC in polyethylene glycol, polypropylene glycol or polypropylene glycol glyceryl esters
    Patent number: 6616740
    Abstract: Liquid compositions consisting essentially of by weight, 0.1-50% IPBC in 99.9-50% polyethylene glycol, polypropylene glycol or polypropylene glycol glyceryl ester, or mixtures thereof, which do not contribute to the VOC of paints and coatings and is stabilized effectively against discoloration even at elevated temperatures or direct sunlight.
    Type: Grant
    Filed: December 6, 2002
    Date of Patent: September 9, 2003
    Assignee: ISP Investments Inc.
    Inventors: Karen Winkowski, Xianbin Liu, Claudinei A. Fava, Daniel H. Brown
  • Liquid compositions of IPBC in polyethylene glycol, polypropylene glycol or polypropylene glycol glyceryl esters
    Publication number: 20030109598
    Abstract: Liquid compositions consisting essentially of by weight, 0.1-50% IPBC in 99.9-50% polyethylene glycol, polypropylene glycol or polypropylene glycol glyceryl ester, or mixtures thereof, which do not contribute to the VOC of paints and coatings and is stabilized effectively against discoloration even at elevated temperatures or direct sunlight.
    Type: Application
    Filed: December 6, 2002
    Publication date: June 12, 2003
    Applicant: ISP INVESTMENTS INC.
    Inventors: Karen Winkowski, Xianbin Liu, Claudinei A. Fava, Daniel H. Brown
  • Biocidal mixture of 2-propenal-releasing polymer and isothiazolones
    Patent number: 6576230
    Abstract: A synergistic biocidal composition comprising a mixture of 2-propenal polymer (APC) and 5-chloro-2-methyl-4-isothiazoline-3-one (CIT) and 2-methyl-4-isothiazoline-3-one (MIT).
    Type: Grant
    Filed: October 11, 2001
    Date of Patent: June 10, 2003
    Assignee: ISP Investments Inc.
    Inventors: Liu Xianbin, Karen Winkowski
  • Liquid biocidal composition of a formaldehyde adduct and an isothiazolone and method of use
    Patent number: 6432433
    Abstract: A synergistic biocidal composition comprising a mixture of a formaldehyde adduct compound and 1,2-benzisothiazolin-3-one.
    Type: Grant
    Filed: June 5, 2000
    Date of Patent: August 13, 2002
    Assignee: ISP Investments Inc.
    Inventors: Karen Winkowski, Xianbin Liu
  • Synergistic composition of biocides
    Patent number: 6121198
    Abstract: The invention is directed to a biocidal composition for inhibition fungal, bacterial and algae growth which comprises a mixture of tetrachloroisophthalonitrile and 3-iodo-2-propynly butyl carbamate.
    Type: Grant
    Filed: May 24, 1999
    Date of Patent: September 19, 2000
    Assignee: Creanova Inc.
    Inventors: Karen Winkowski, Techen Tsao
  • Biocidal composition
    Patent number: 6121197
    Abstract: The invention is directed to a biocidal composition for inhibiting fungal and algae growth which comprises a mixture of tetrachloroisophthalonitrile and N-cyclopropyl-N'(1,1 -dimethylethyl)-6-(methylthio)-1,3,5-triazine-2,4-dismine.
    Type: Grant
    Filed: May 24, 1999
    Date of Patent: September 19, 2000
    Assignee: Creanova Inc.
    Inventors: Karen Winkowski, Techen Tsao