Patents by Inventor Kimely P. Pitre

Kimely P. Pitre 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).

  • Viscosified aqueous chitosan-containing well drilling and servicing fluids
    Patent number: 6358889
    Abstract: The invention provides well drilling and servicing fluids comprising an alkaline aqueous liquid containing chitosan, an anhydride, and an aldehyde therein. The invention further provides a method of drilling a well wherein there is circulated in the wellbore during drilling a drilling fluid comprising an alkaline aqueous liquid containing chitosan and an anhydride, and optionally an aldehyde therein.
    Type: Grant
    Filed: February 13, 2001
    Date of Patent: March 19, 2002
    Assignee: Venture Innovations, Inc.
    Inventors: John H. Waggenspack, Roy F. House, Kimely P. Pitre
  • Viscosified aqueous chitosan-containing well drilling and servicing fluids
    Publication number: 20010009889
    Abstract: The invention provides well drilling and servicing fluids and method of drilling a well therewith, the fluids comprising an alkaline aqueous liquid containing chitosan and an anhydride therein, and optionally an aldehyde and/or pyruvic acid therein. The preferred anhydride is succinic anhydride at an anhydride to chitosan weight ratio from about 0.1 to 1 to about 1.5 to 1.
    Type: Application
    Filed: February 13, 2001
    Publication date: July 26, 2001
    Inventors: John H. Waggenspack, Roy F. House, Kimely P. Pitre