Patents by Inventor Charles Sylvestre

Charles Sylvestre 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).

  • Pumice containing compositions for cementing a well
    Patent number: 7867954
    Abstract: A cement composition comprises fine pumice particles, for use in cementing subterranean wells, and oil and gas wells in particular. The pumice containing cement blends feature enhanced compressive strength, and favorable compressive strength to Young's Modulus ratios. Lightweight cement blends containing pumice, and their use in cementing oil and gas wells are also described.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: January 11, 2011
    Assignee: Sanjel Limited Partnership
    Inventors: Neil Warrender, Amir Mahmoudkhani, Nga Tu Huynh, Charles Sylvestre
  • PUMICE CONTAINING COMPOSITIONS FOR CEMENTING A WELL
    Publication number: 20090105099
    Abstract: A cement composition comprises fine pumice particles, for use in cementing subterranean wells, and oil and gas wells in particular. The pumice containing cement blends feature enhanced compressive strength, and favourable compressive strength to Young's Modulus ratios. Lightweight cement blends containing pumice, and their use in cementing oil and gas wells are also described.
    Type: Application
    Filed: October 22, 2008
    Publication date: April 23, 2009
    Applicant: SANJEL LIMITED PARTNERSHIP
    Inventors: Neil WARRENDER, Amir MAHMOUDKHANI, Nga Tu HUYNH, Charles SYLVESTRE