Patents by Inventor Raghunandan Sharma

Raghunandan Sharma 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).

  • A METHOD OF RECOVERING IRIDIUM
    Publication number: 20230023272
    Abstract: The present invention relates to a method of recovering iridium in the form of iridium solutions, metal, oxides or salts from a body, such as a spent catalyst, comprising iridium oxides.
    Type: Application
    Filed: October 21, 2020
    Publication date: January 26, 2023
    Inventors: Shuang Ma Andersen, Raghunandan Sharma
  • Filament including carbon nanotubes and method of making a filament including carbon nanotubes
    Patent number: 8853932
    Abstract: Techniques described herein generally relate to methods of manufacturing devices and devices including a filament having therein or coated with a catalyst and carbon nanotubes. The device may be configured to produce light with a luminary characteristic having a value higher than a value of the luminary characteristic of a device having an uncoated filament at a same operating condition. The luminary characteristic may include one or more of device irradiance or light efficiency. The filament may be a tungsten filament, and the carbon nanotubes may include multiwall carbon nanotubes or single wall carbon nanotubes. The filament may be coated with the carbon nanotubes using one or more deposition techniques including electric arc discharge, laser ablation and chemical vapor deposition (CVD). The filament may be coated with the catalyst using a method including one or more of electroless plating, electroplating, dip coating, spin coating, and radio frequency (RF) sputtering.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: October 7, 2014
    Assignee: Indian Institute of Technology Kanpur
    Inventors: Kamal Krishna Kar, Raghunandan Sharma, Ariful Rahman, Sanjay Agarwal
  • INCANDESCENT LAMP
    Publication number: 20120074832
    Abstract: Techniques described herein generally relate to methods of manufacturing devices and devices including a filament having therein or coated with a catalyst and carbon nanotubes. The device may be configured to produce light with a luminary characteristic having a value higher than a value of the luminary characteristic of a device having an uncoated filament at a same operating condition. The luminary characteristic may include one or more of device irradiance or light efficiency. The filament may be a tungsten filament, and the carbon nanotubes may include multiwall carbon nanotubes or single wall carbon nanotubes. The filament may be coated with the carbon nanotubes using one or more deposition techniques including electric arc discharge, laser ablation and chemical vapor deposition (CVD). The filament may be coated with the catalyst using a method including one or more of electroless plating, electroplating, dip coating, spin coating, and radio frequency (RF) sputtering.
    Type: Application
    Filed: January 31, 2011
    Publication date: March 29, 2012
    Inventors: Kamal Krishna Kar, Raghunandan Sharma, Ariful Rahman, Sanjay Agarwal