Patents by Inventor G. Gunar McKendree

G. Gunar McKendree 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).

  • Enzymatic press felt treatment
    Patent number: 7578904
    Abstract: Methods for reducing or inhibiting deposition on or within press felts to increase the effective life of the press felt and reduce or eliminate the need for batch cleaning are disclosed. The methods disclosed treat press felt while paper is being produced with compositions containing at least one enzyme. Additionally, the enzymes can be applied in combination with other non-enzymatic felt conditioning products either by blending and applying at the same application point or by applying the enzyme and the non-enzymatic felt conditioning product at two different locations along the felt. The treatments are applied continuously or intermittently.
    Type: Grant
    Filed: December 10, 2007
    Date of Patent: August 25, 2009
    Assignee: Hercules Incorporated
    Inventors: Jacqueline K. Pease, G. Gunar McKendree, Freddie L. Singleton, George S. Thomas
  • Felt and equipment surface conditioner
    Patent number: 7534324
    Abstract: Deposition of contamination by deposits of resinous material on paper making equipment is undesirable. This invention prevents or retards such contamination by treating the equipment, especially the press felts with a composition containing a polyoxyalkylene. surfactant which contains units of ethylene oxide and a higher alkylene oxide.
    Type: Grant
    Filed: June 22, 2006
    Date of Patent: May 19, 2009
    Assignee: Hercules Incorporated
    Inventors: Jacqueline K. Pease, G. Gunar McKendree
  • Enzymatic press felt treatment
    Patent number: 7306702
    Abstract: Methods for reducing or inhibiting deposition on or within press felts to increase the effective life of the press felt and reduce or eliminate the need for batch cleaning are disclosed. The methods disclosed treat press felt while paper is being produced with compositions containing at least one enzyme. Additionally, the enzymes can be applied in combination with other non-enzymatic felt conditioning products either by blending and applying at the same application point or by applying the enzyme and the non-enzymatic felt conditioning product at two different locations along the felt. The treatments are applied continuously or intermittently.
    Type: Grant
    Filed: April 11, 2003
    Date of Patent: December 11, 2007
    Assignee: Hercules Incorporation
    Inventors: Jacqueline K. Pease, G. Gunar McKendree, Freddie L. Singleton, George S. Thomas