Patents by Inventor William D. Keefe

William D. Keefe 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).

  • BIO-RENEWABLE POLYURETHANE FOAM FOR CONSUMER CLEANING APPLICATIONS
    Publication number: 20220056191
    Abstract: Disclosed is a polyurethane foam and a method of preparing the same which utilizes only bio-renewable polyols and no petroleum derived polyols. The polyol is derived from a bio-renewable source and has a bio-renewable content of at least 70% by weight. The produced foams have mechanical and performance properties that are equal to or exceed those of similar polyurethane foams produced using petroleum derived polyols. The foams are preferably formed into sponges and other cleaning products for use by consumers and in industrial settings.
    Type: Application
    Filed: August 23, 2021
    Publication date: February 24, 2022
    Inventors: Raymond Bertram, Khalil N. Khameneh, William D. Keefe, JR.
  • Methods for polymer synthesis
    Patent number: 10308761
    Abstract: The present invention provides methods for reducing induction periods in epoxide-CO2 copolymerizations. In certain embodiments, the methods include the step of contacting an epoxide with CO2 in the presence of two catalysts: an epoxide hydrolysis catalyst and an epoxide CO2 copolymerization catalyst. In another aspect, the invention provides catalyst compositions comprising a mixture of an epoxide hydrolysis catalyst and an epoxide CO2 copolymerization catalyst.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: June 4, 2019
    Assignee: Saudi Aramco Technologies Company
    Inventors: Scott D. Allen, Christopher A. Simoneau, William D. Keefe, Jeff R. Conuel
  • METHODS FOR POLYMER SYNTHESIS
    Publication number: 20170183447
    Abstract: The present invention provides methods for reducing induction periods in epoxide-CO2 copolymerizations. In certain embodiments, the methods include the step of contacting an epoxide with CO2 in the presence of two catalysts: an epoxide hydrolysis catalyst and an epoxide CO2 copolymerization catalyst. In another aspect, the invention provides catalyst compositions comprising a mixture of an epoxide hydrolysis catalyst and an epoxide CO2 copolymerization catalyst.
    Type: Application
    Filed: December 2, 2016
    Publication date: June 29, 2017
    Inventors: Scott D. Allen, Christopher A. Simoneau, William D. Keefe, Jeff R. Conuel
  • Methods for polymer synthesis
    Patent number: 9512269
    Abstract: The present invention provides methods for reducing induction periods in epoxide-CO2 copolymerizations. In certain embodiments, the methods include the step of contacting an epoxide with CO2 in the presence of two catalysts: an epoxide hydrolysis catalyst and an epoxide CO2 copolymerization catalyst. In another aspect, the invention provides catalyst compositions comprising a mixture of an epoxide hydrolysis catalyst and an epoxide CO2 copolymerization catalyst.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: December 6, 2016
    Assignee: Novomer, Inc.
    Inventors: Scott D. Allen, Christopher A. Simoneau, William D. Keefe, Jeff R. Conuel
  • METHODS FOR POLYMER SYNTHESIS
    Publication number: 20150051369
    Abstract: The present invention provides methods for reducing induction periods in epoxide-CO2 copolymerizations. In certain embodiments, the methods include the step of contacting an epoxide with CO2 in the presence of two catalysts: an epoxide hydrolysis catalyst and an epoxide CO2 copolymerization catalyst. In another aspect, the invention provides catalyst compositions comprising a mixture of an epoxide hydrolysis catalyst and an epoxide CO2 copolymerization catalyst.
    Type: Application
    Filed: December 20, 2012
    Publication date: February 19, 2015
    Inventors: Scott D. Allen, Christopher A. Simoneau, William D. Keefe, Jeff R. Conuel