Patents by Inventor Rajiv K. Singh

Rajiv K. Singh 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).

  • Method for increasing the surface area of ceramics, metals and composites
    Patent number: 5473138
    Abstract: A method for increasing the surface area and roughness of metals, ceramics and composites on a micro-scale, and the surfaces themselves, is disclosed whereby a laser beam having a radiation wavelength of from UV to infrared is pulsed onto the surface of the material. The energy density of the radiation is between 0.01 to 15 J/cm.sup.2 and at least 50 pulses of radiation having duration of from 1 picosecond to 1 millisecond are used on each area. The surface structures formed are semi-periodic and are from 1/4 to several hundred microns in magnitude.
    Type: Grant
    Filed: July 13, 1993
    Date of Patent: December 5, 1995
    Inventors: Rajiv K. Singh, Brij M. Moudgil, Sanjay Behl, Deepika Bhattacharya