Patents by Inventor Manuj Goyal

Manuj Goyal 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 imparting and enhancement of colours in gemstone minerals and gemstone minerals obtained thereby
    Patent number: 6872422
    Abstract: The present invention provides a process for imparting colors to colorless gemstone/minerals and enhancing properties of gemstone/minerals by coating a thin/thick film of a particular material or multiple films of different materials on polished gemstones/minerals to impart color in colorless stones and to enhance the color in paler stones, and to such gemstones/mineral obtained by the process.
    Type: Grant
    Filed: January 25, 2002
    Date of Patent: March 29, 2005
    Inventors: Samir Gupta, Manuj Goyal
  • Process for imparting and enhancement of colours in gemstone minerals and gemstone minerals obtained thereby
    Publication number: 20030008077
    Abstract: The present invention provides a process for imparting colours to colourless gemstone/minerals and enhancing properties of gemstone/minerals by coating a thin/thick film of a particular material or multiple films of different materials on polished gemstones/minerals to impart colour in colourless stones and to enhance the colour in paler stones, and to such gemstones/mineral obtained by the process.
    Type: Application
    Filed: January 25, 2002
    Publication date: January 9, 2003
    Inventors: Samir Gupta, Manuj Goyal