Patents by Inventor Podma Pollov Sarmah

Podma Pollov Sarmah 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).

  • Resin Coated Proppants and Process for the Preparation Thereof
    Publication number: 20160326428
    Abstract: The present invention provides a process for preparing resin coated highly spherical proppants of sizes 12/20 and 20/40 US mesh by sintering the calcined bauxite and then coating with resol type phenolic resin comprising phenol, m-cresol and formaldehyde. Coating is done without using any coupling or partitioning agent. The resin coated proppants prepared by the method of the present invention are useful in hydraulic fracturing of oil and gas producing formations. The prepared proppants have high acid resistance towards 3% HF-12% HCl mixture and have high crush resistance (upto 15000 psi) as per API specifications.
    Type: Application
    Filed: December 24, 2014
    Publication date: November 10, 2016
    Inventors: Dipak Kumar Dutta, Pinaki Sengupta, Kokil Saikia, Podma Pollov Sarmah, Ankana Phukan