Patents by Inventor Leonard F. Zaporowski

Leonard F. Zaporowski 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: 10011807
    Abstract: A fabric conditioning active composition comprising an esterquat mixture of quaternized mono-, di-, and tri-esters of alkanolamine in which the tri-esterquat content of the quaternized esterquat mixture is greater than 25% by weight of the esterquat mixture, and the combined di-esterquat and tri-esterquat content in the esterquat mixture is greater than 78% by weight of the esterquat mixture. Additionally, the free fatty acid content of the composition is greater than 1% by weight based on the weight of the esterquat mixture. The fabric conditioning active composition provides high viscosity when dispersed into water at low concentrations of 0.5% to 12%, without the need for additional polymeric thickeners or other thickening additives.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: July 3, 2018
    Assignee: Stepan Company
    Inventors: Dennis R. Murphy, Leonard F. Zaporowski, Christopher A. Gariepy, Carmen Matache, Diana J. Dardugno
  • Publication number: 20160281033
    Abstract: A fabric conditioning active composition comprising an esterquat mixture of quaternized mono-, di-, and tri-esters of alkanolamine in which the tri-esterquat content of the quaternized esterquat mixture is greater than 25% by weight of the esterquat mixture, and the combined di-esterquat and tri-esterquat content in the esterquat mixture is greater than 78% by weight of the esterquat mixture. Additionally, the free fatty acid content of the composition is greater than 1% by weight based on the weight of the esterquat mixture. The fabric conditioning active composition provides high viscosity when dispersed into water at low concentrations of 0.5% to 12%, without the need for additional polymeric thickeners or other thickening additives.
    Type: Application
    Filed: June 3, 2016
    Publication date: September 29, 2016
    Inventors: Dennis R. Murphy, Leonard F. Zaporowski, Christopher A. Gariepy, Carmen Matache, Diana J. Dardugno
  • Publication number: 20160010029
    Abstract: A fabric conditioning active composition comprising an esterquat mixture of quaternized mono-, di-, and tri-esters of alkanolamine in which the tri-esterquat content of the quaternized esterquat mixture is greater than 25% by weight of the esterquat mixture, and the combined di-esterquat and tri-esterquat content in the esterquat mixture is greater than 78% by weight of the esterquat mixture. Additionally, the free fatty acid content of the composition is greater than 1% by weight based on the weight of the esterquat mixture. The fabric conditioning active composition provides high viscosity when dispersed into water at low concentrations of 0.5% to 12%, without the need for additional polymeric thickeners or other thickening additives.
    Type: Application
    Filed: September 14, 2015
    Publication date: January 14, 2016
    Inventors: Dennis S. Murphy, Leonard F. Zaporowski, Christopher A. Gariepy, Carmen Matache, Diana J. Dardugno
  • Patent number: 8692005
    Abstract: Provided are methods for decreasing the reaction time between an alkanolamine such as triethanolamine and a fatty acid alkyl ester such as, a triglyceride, a vegetable oil, a methyl ester, an ethyl ester, etc., a fatty acid, or a mixture thereof. The methods utilize a divalent zinc catalyst to facilitate and accelerate an esterification or transesterification reaction between the alkanolamine and the fatty acid, or fatty acid alkyl ester.
    Type: Grant
    Filed: August 15, 2012
    Date of Patent: April 8, 2014
    Assignee: Stepan Company
    Inventors: Marshall J. Nepras, Franz J. Luxem, Leonard F. Zaporowski, David Eisenberg
  • Publication number: 20120309993
    Abstract: Provided are methods for decreasing the reaction time between an alkanolamine such as triethanolamine and a fatty acid alkyl ester such as, a triglyceride, a vegetable oil, a methyl ester, an ethyl ester, etc., a fatty acid, or a mixture thereof The methods utilize a divalent zinc catalyst to facilitate and accelerate an esterification or transesterification reaction between the alkanolamine and the fatty acid, or fatty acid alkyl ester.
    Type: Application
    Filed: August 15, 2012
    Publication date: December 6, 2012
    Inventors: Marshall J. Nepras, Franz J. Luxem, Leonard F. Zaporowski, David Eisenberg