Patents by Inventor Madhav Prasad Dahal

Madhav Prasad Dahal 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).

  • Transition metal compound particles and methods of production
    Patent number: 9278867
    Abstract: A method of preparing insoluble transition metal compound particles is described, comprising: providing a transition metal salt solution having the formula (TM)(S) wherein TM is one or more of Mn, Ni, Co, Mg, Zn, Ca, Sr, Cu, Zr, P, Fe, Al, Ga, In, Cr Ge or Sn; providing a source of a carbonate-, hydroxide-, phosphate-, oxyhydroxide- or oxide-based anionic compound wherein the anionic component, represented by S?, is reactive with TM to form the particles; adding the transition metal salt solution and anionic compound to a reaction chamber; and subjecting the chamber to sonication at an intensity of about 0.1 to about 50 W/mL. In an exemplary embodiment, MnCO3 particles are formed from: MnSO4; and Na2CO3 and/or NH4HCO3, wherein the ratio of MnSO4 to Na2CO3 and/or NH4HCO3 is from about 1:1.5 to 1.5:1. The particles may have narrow size distribution and a tap density of about 1.7-2.3 g/mL.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: March 8, 2016
    Assignee: YAVA TECHNOLOGIES INC.
    Inventors: Trevor Byrne, Madhav Prasad Dahal
  • TRANSITION METAL COMPOUND PARTICLES AND METHODS OF PRODUCTION
    Publication number: 20130272949
    Abstract: A method of preparing insoluble transition metal compound particles is described, comprising: providing a transition metal salt solution having the formula (TM)(S) wherein TM is one or more of Mn, Ni, Co, Mg, Zn, Ca, Sr, Cu, Zr, P, Fe, Al, Ga, In, Cr Ge or Sn; providing a source of a carbonate-, hydroxide-, phosphate-, oxyhydroxide- or oxide-based anionic compound wherein the anionic component, represented by S?, is reactive with TM to form the particles; adding the transition metal salt solution and anionic compound to a reaction chamber; and subjecting the chamber to sonication at an intensity of about 0.1 to about 50 W/mL. In an exemplary embodiment, MnCO3 particles are formed from: MnSO4; and Na2CO3 and/or NH4HCO3, wherein the ratio of MnSO4 to Na2CO3 and/or NH4HCO3 is from about 1:1.5 to 1.5:1. The particles may have narrow size distribution and a tap density of about 1.7-2.3 g/mL.
    Type: Application
    Filed: December 16, 2011
    Publication date: October 17, 2013
    Applicant: YAVA TECHNOLOGIES INC.
    Inventors: Trevor Byrne, Madhav Prasad Dahal