Patents by Inventor Stefan Borduz

Stefan Borduz 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).

  • Advanced ceramic catalyst
    Patent number: 8841232
    Abstract: The present disclosure generally relates to an advanced ceramic catalyst made by metal oxides dispersed in refractory ceramics and the process of making same. The advanced ceramic catalyst is capable of significantly lowering carbon foot prints and noxious emissions by generating the same heat energy with much lower quantity of fuel such as of natural gas, propane and other gaseous hydrocarbons. A process of making such a catalyst from inexpensive combination of metal oxide prepared in solution to have many oxygen lattice defects and particle size distribution selected from nanometer to millimeter range which can provide a huge surface area for combustion reaction thus lowering the activation energy of combustion.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: September 23, 2014
    Inventors: Lucian Borduz, Dumitru Tuclea, Stefan Borduz
  • Process for producing a magnetic fluid and composition therefor
    Patent number: 6056889
    Abstract: The invention relates to a composition and a process for producing a chemically stable magnetic fluid comprising finely divided magnetic particles covered with surfactants. A surface modifier is also employed which is added to cover thoroughly the free oxidizable exterior surface of the outer layer of the particles to assure better chemical stability of the colloid under different environmental conditions.
    Type: Grant
    Filed: October 10, 1997
    Date of Patent: May 2, 2000
    Assignee: Ferrotec Corporation
    Inventors: Shiro Tsuda, Kacey Wiley Heckman, Yasutake Hirota, Stefan Borduz, Lucian Borduz
  • Process for producing a magnetic fluid and composition therefor
    Patent number: 5676877
    Abstract: The invention relates to a composition and a process for producing a chemically stable magnetic fluid comprising finely divided magnetic particles covered with surfactants. A surface modifier is also employed which is added to cover thoroughly the free oxidizable exterior surface of the outer layer of the particles to assure better chemical stability of the colloid under different environmental conditions.
    Type: Grant
    Filed: March 26, 1996
    Date of Patent: October 14, 1997
    Assignee: Ferrotec Corporation
    Inventors: Stefan Borduz, Lucian Borduz, Shiro Tsuda