Patents by Inventor Pravinchandra M. Oza

Pravinchandra M. Oza 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).

  • Process for preparing hydrotalcite and brucite type posite charged layers
    Patent number: 7022302
    Abstract: An improved process is described for the preparation of surface modified hydrotalcite. The process comprises reacting a precursor of magnesium and aluminium in the presence of suitable alkali carbonate at high temperature. The product has a BET surface area of ?20 m2/gm and average particle size of ?0.5 ?m and is useful as halogen scavenger and fire retardant.
    Type: Grant
    Filed: December 31, 2002
    Date of Patent: April 4, 2006
    Assignee: Council of Scientific and Industrial Research
    Inventors: Pravinchandra M. Oza, Satishbhai H. Mehta, Murnalben V. Sheth, Pushpito K. Ghosh, Mahesh R. Gandhi, Jatin R. Chunawala
  • Process for generation of precipitated calcium carbonate from calcium carbonate rich industrial by-product
    Patent number: 6790424
    Abstract: An environmentally friendly process for the production of precipitated calcium carbonate suitable for industrial application from a calcium carbonate-rich by-product of a nitrophosphate fertilizer plant. The process employs purification steps of calcination, carbonation and optional treatment with an emulsion of fatty acid or fatty acid derivatives.
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: September 14, 2004
    Assignees: Council of Scientific and Industrial Research, Gujarat Narmada Valley Fertilizer Company Limited
    Inventors: Raksh Vir Jasra, Pravinchandra M. Oza, Rajesh S. Somani, Jatin R. Chunnawala, Mrinal V. Sheth, Vikram V. Thakkar, Yogi M. Badheka, Jayalekshmy Ayyer, Virendra B. Patel
  • Process for preparing hydrotalcite and brucite type posite charged layers
    Publication number: 20040126301
    Abstract: An improved process is described for the preparation of surface modified hydrotalcite. The process comprises reacting a precursor of magnesium and aluminium in the presence of suitable alkali carbonate at high temperature. The product has a BET surface area of ≦20 m2/gm and average particle size of ≦0.5 &mgr;m and is useful as halogen scavenger and fire retardant.
    Type: Application
    Filed: December 31, 2002
    Publication date: July 1, 2004
    Inventors: Pravinchandra M. Oza, Satishbhai H. Mehta, Murnalben V. Sheth, Pushpito K. Ghosh, Mahesh R. Gandhi, Jatin R. Chunawala
  • Process for generation of precipitated calcium carbonate from calcium carbonate rich industrial by-product
    Publication number: 20030082091
    Abstract: An environmental friendly process for the production of precipitated calcium carbonate suitable for industrial application from calcium carbonate rich by-product of nitrophosphate fertilizer plant by adopting purification steps of calcination, carbonation and optional treatment with emulsion of fatty acid or its derivatives.
    Type: Application
    Filed: October 31, 2001
    Publication date: May 1, 2003
    Inventors: Raksh Vir Jasra, Pravinchandra M. Oza, Rajesh S. Somani, Jatin R. Chunnawala, Mrinal V. Sheth, Vikram V. Thakkar, Yogi M. Badheka, Jayalekshmy Ayyer, Virendra B. Patel