Patents by Inventor Sivaraman Gopalrao

Sivaraman Gopalrao 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).

  • Hard material and method of making the same from an aqueous hard material milling slurry
    Patent number: 10538829
    Abstract: An aqueous emulsion for use in aqueous milling of hard material powder components in an aqueous slurry. The aqueous emulsion includes an oxidation inhibitor in an amount between about 0.3 weight percent and about 1.2 weight percent of the hard material powder components in the aqueous slurry. The aqueous emulsion also includes a paraffin wax in an amount between about 0.25 weight percent and about 0.75 weight percent of the hard material powder components in the aqueous slurry for vacuum dried powder and in an amount about up to 2.75 weight percent of the hard material powder components in the aqueous slurry for spray dried powder. The aqueous emulsion also includes myristic acid in an amount between about 0.10 weight percent and about 0.50 weight percent of the hard material powder components in the aqueous slurry. The balance of the aqueous emulsion is water.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: January 21, 2020
    Assignee: KENNAMETAL INDIA LIMITED
    Inventors: Sivaraman Gopalrao, Raghavan Rengarajan, Ramesh S. Rao, Alam Rukhsar
  • HARD MATERIAL AND METHOD OF MAKING THE SAME FROM AN AQUEOUS HARD MATERIAL MILLING SLURRY
    Publication number: 20150098856
    Abstract: An aqueous emulsion for use in aqueous milling of hard material powder components in an aqueous slurry. The aqueous emulsion includes an oxidation inhibitor in an amount between about 0.3 weight percent and about 1.2 weight percent of the hard material powder components in the aqueous slurry. The aqueous emulsion also includes a paraffin wax in an amount between about 0.25 weight percent and about 0.75 weight percent of the hard material powder components in the aqueous slurry for vacuum dried powder and in an amount about up to 2.75 weight percent of the hard material powder components in the aqueous slurry for spray dried powder. The aqueous emulsion also includes myristic acid in an amount between about 0.10 weight percent and about 0.50 weight percent of the hard material powder components in the aqueous slurry. The balance of the aqueous emulsion is water.
    Type: Application
    Filed: September 26, 2014
    Publication date: April 9, 2015
    Inventors: Sivaraman Gopalrao, Raghavan Rengarajan, Ramesh S. Rao, Alam Rukhsar