Patents by Inventor Rameshwar Bhargava

Rameshwar Bhargava 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).

  • Strong non rare earth permanent magnets from double doped magnetic nanoparticles
    Patent number: 11848130
    Abstract: A magnetic nanoparticle, and composites thereof, comprising a ternary host compound comprising a transition metal oxide of size 2-30 nm having two transition metal dopants atom incorporated therein, such that the nanoparticle is converted from superparamagnetic or weak ferromagnetic to strong ferromagnetic material. The strong permanent magnets are formed from non-rare earth materials. The composite material can also include undoped nanoparticles.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: December 19, 2023
    Assignee: Nano Theranostics
    Inventor: Rameshwar Bhargava
  • Method of manufacturing quantum sized doped semiconductor particles
    Patent number: 6241819
    Abstract: Doped semiconductor nanoparticles of a size (<100 Å) which exhibit quantum effects. The nanoparticles are grown and doped within a polymer matrix.
    Type: Grant
    Filed: April 20, 1993
    Date of Patent: June 5, 2001
    Assignee: North American Philips Corp.
    Inventors: Rameshwar Bhargava, Dennis Gallagher
  • Encapsulated quantum sized doped semiconductor particles and method of manufacturing same
    Patent number: 6048616
    Abstract: Doped encapsulated semiconductor nanoparticles of a size (<100 .ANG.) which exhibit quantum effects. The nanoparticles are precipitated and coated with a surfactant by precipitation in an organometallic reaction. The luminescence of the particles may be increased by a further UV curing step.
    Type: Grant
    Filed: October 4, 1994
    Date of Patent: April 11, 2000
    Assignee: Philips Electronics N.A. Corp.
    Inventors: Dennis Gallagher, Rameshwar Bhargava, Jacqueline Racz
  • Method of manufacturing encapsulated doped particles
    Patent number: 5525377
    Abstract: Doped encapsulated semiconductor nanoparticles of a size (<100 .ANG.) which exhibit quantum effects. The nanoparticles are precipitated and coated with a surfactant by precipitation in an organometallic reaction. The luminescence of the particles may be increased by a further UV curing step.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: June 11, 1996
    Assignee: U.S. Philips Corporation
    Inventors: Dennis Gallagher, Rameshwar Bhargava, Jacqueline Racz