Patents by Inventor Munivemmal Sellamuthupillai Krishnan

Munivemmal Sellamuthupillai Krishnan 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).

  • Highly acidic mesoporous synergistic solid catalyst and its applications
    Patent number: 6204424
    Abstract: An eco-friendly synergistic heterogeneous solid catalyst for use in reactions such as alkylation, acylation, oligomerization, isomerization, hydration, dehydration, etherification, esterification, hydrocracking and nitration of organic compounds comprising: a synergistic combination of sulfated metal oxide and mesoporous zeotypes comprising: Silicon (Si) 50-60 wt %, Zirconium (Zr) 40-50 wt %, Sulfur (S) 5-10 wt % and having a surface area in the range of 200-500 m2/g; a pore volume in the range of 0.1-0.3 m3/g; a pore diameter in the range of 25-35 Å; and a XRD peak at 2&thgr; being 0-3. The invention also covers the process of manufacture of the above catalysts and its use in particular for producing oligomers from alpha-olefins, Friedel-Crafts alkylation and acylation reactions.
    Type: Grant
    Filed: December 14, 1998
    Date of Patent: March 20, 2001
    Assignee: Secretary, Department of Science and Technology, Government of India
    Inventors: Ganapati Dadasahab Yadav, Munivemmal Sellamuthupillai Krishnan, Nirav Shashikant Doshi, Ajit Atmaram Pujari, Mohamed Sheik Mohamed Mujeebur Rahuman