Patents by Inventor John Kenneth Bard

John Kenneth Bard 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).

  • Low molar, homogeneously substituted HEC for use in cement-based systems
    Patent number: 8430957
    Abstract: Hydroxyethylcellulose with a low molar substitution and which is uniformly substituted is useful in cement-based systems, including mortars. The cement-based system exhibits long pot life, as well as very high water retention capability at hot temperature, as well as better paste stability and optimized setting behavior for hot as well as cold temperature compared to typical, cement-based systems with commercial cellulose ether compounds. Less hydrophilic cellulose ethers such as methylhydroxyethylcellulose can be added as a second cellulose ether.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: April 30, 2013
    Assignee: Hercules Incorporated
    Inventors: Wilfried Adolf Hohn, Kirill N. Bakeev, John Kenneth Bard, Michael Dittel, Teng-Shau Young
  • LOW MOLAR, HOMOGENEOUSLY SUBSTITUTED HEC FOR USE IN CEMENT-BASED SYSTEMS
    Publication number: 20120312195
    Abstract: Hydroxyethylcellulose with a low molar substitution and which is uniformly substituted is useful in cement-based systems, including mortars. The cement-based system exhibits long pot life, as well as very high water retention capability at hot temperature, as well as better paste stability and optimized setting behavior for hot as well as cold temperature compared to typical, cement-based systems with commercial cellulose ether compounds. Less hydrophilic cellulose ethers such as methylhydroxyethylcellulose can be added as a second cellulose ether.
    Type: Application
    Filed: May 31, 2012
    Publication date: December 13, 2012
    Inventors: Wilfried Adolf Hohn, Kirill N. Bakeev, John Kenneth Bard, Michael Dittel, Teng-Shau Young