Patents by Inventor Rinaldo A. Stefan

Rinaldo A. Stefan 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 PRODUCING METAL POWDERS
    Publication number: 20080289447
    Abstract: A process for the production of extra fine spherical metal powders by chemical vapor deposition and dissolution techniques, including metal carbonyls, wherein the metal containing process gas is propelled upwardly through a heated reactor.
    Type: Application
    Filed: November 15, 2007
    Publication date: November 27, 2008
    Applicant: CVRD INCO LIMITED
    Inventors: Kenneth Stark Coley, Armen Markarian, Shadi Saberi, Randal Mark Shaubel, Rinaldo A. Stefan, Lloyd Matt Timberg, Eric Bain Wasmund
  • Process for producing metal powders
    Patent number: 7344584
    Abstract: A process for the production of extra fine spherical metal powders by chemical vapor deposition and dissolution techniques, including metal carbonyls, wherein the metal containing process gas is propelled upwardly through a heated reactor. By employing an upward gas flow as opposed to the conventional downward gas flow, a closer approximation of theoretical plug-flow velocity profiles are achieved thusly resulting in a desirably narrower size particle distribution obviating or reducing the need for subsequent classification techniques.
    Type: Grant
    Filed: September 3, 2004
    Date of Patent: March 18, 2008
    Assignee: Inco Limited
    Inventors: Kenneth Stark Coley, Armen Markarian, Shadi Saberi, Randy Shaubel, Rinaldo A. Stefan, Lloyd Matt Timberg, Eric Bain Wasmund
  • Process for producing metal powders
    Publication number: 20060048606
    Abstract: A process for the production of extra fine spherical metal powders by chemical vapor deposition and dissolution techniques, including metal carbonyls, wherein the metal containing process gas is propelled upwardly through a heated reactor. By employing an upward gas flow as opposed to the conventional downward gas flow, a closer approximation of theoretical plug-flow velocity profiles are achieved thusly resulting in a desirably narrower size particle distribution obviating or reducing the need for subsequent classification techniques.
    Type: Application
    Filed: September 3, 2004
    Publication date: March 9, 2006
    Inventors: Kenneth Coley, Armen Markarian, Shadi Saberi, Randy Shaubel, Rinaldo Stefan, Lloyd Timberg, Eric Wasmund
  • Decomposition method for producing submicron particles in a liquid bath
    Patent number: 6746511
    Abstract: A continuous method of manufacturing a liquid dispersion containing submicron metal or metal compound particles inside a liquid bath. A metal-containing fluid with carrier gas mixture is bubbled through the liquid bath and predetermined conditions in the bath cause the fluid to decompose to form the submicron sized metal or metal compound particles in the liquid.
    Type: Grant
    Filed: July 3, 2002
    Date of Patent: June 8, 2004
    Assignee: Inco Limited
    Inventors: Eric B. Wasmund, Richard S. Adams, John Ambrose, Armen Markarian, Dirk Naumann, Lloyd Timberg, Rinaldo Stefan
  • Decomposition method for producing submicron particles in a liquid bath
    Publication number: 20040003680
    Abstract: A continuous method of manufacturing a liquid dispersion containing submicron metal or metal compound particles inside a liquid bath. A metal-containing fluid with carrier gas mixture is bubbled through the liquid bath and predetermined conditions in the bath cause the fluid to decompose to form the submicron sized metal or metal compound particles in the liquid.
    Type: Application
    Filed: July 3, 2002
    Publication date: January 8, 2004
    Applicant: Inco Limited, a Canadian corporation
    Inventors: Eric B. Wasmund, Richard S. Adams, John Ambrose, Armen Markarian, Dirk Naumann, Lloyd Timberg, Rinaldo Stefan