Patents by Inventor Luis F. Correa

Luis F. Correa 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 of producing a pre-alloyed stabilized zirconia powder
    Patent number: 6869550
    Abstract: A pre-alloyed stabilized zirconia powder suitable for use in thermal barrier applications is formed by alloying zirconia with a stabilizer, such as yttria, and processing the alloyed stabilized zirconia to form a very fine powder. The raw powder is then spray-dried to produce an agglomerated powder having an average particle size suitable for use in spray coating applications. The resulting powder can be used in a thermal-spray application to produce a porous thermal barrier coating having a substantially decreased thermal conductivity when compared to conventional TB coatings, such those produced using plasma-densified powders.
    Type: Grant
    Filed: December 7, 2001
    Date of Patent: March 22, 2005
    Assignee: Sulzer Metco (US) Inc.
    Inventors: Mitchell R. Dorfman, Luis F. Correa, Christopher G. Dambra, Komal Laul, Richard K. Schmid
  • METHOD OF PRODUCINHG A PRE-ALLOYED STABILIZED ZIRONIA POWDER
    Publication number: 20040197580
    Abstract: A pre-alloyed stabilized zirconia powder suitable for use in thermal barrier applications is formed by alloying zirconia with a stabilizer, such as yttria, and processing the alloyed stabilized zirconia to form a very fine powder. The raw powder is then spray-dried to produce an agglomerated powder having an average particle size suitable for use in spray coating applications. The resulting powder can be used in a thermal-spray application to produce a porous thermal barrier coating having a substantially decreased thermal conductivity when compared to conventional TB coatings, such those produced using plasma-densified powders.
    Type: Application
    Filed: December 7, 2001
    Publication date: October 7, 2004
    Inventors: Mitchell R. Dorfman, Luis F. Correa, Christopher G. Dambra, Komal Laul, Richard K. Schmid
  • Thermal spray powder of dicalcium silicate and coating thereof and manufacture thereof
    Patent number: 6524704
    Abstract: A powder of dicalcium silicate is made by spray drying calcia and silica with incorporation of sodium and phosphorus or stabilized zirconia. The spray dried powder is sintered to form a thermal spray powder. Sprayed coatings have a web of interconnected, randomly oriented microcracks substantially perpendicular to the coating surface. The coatings are stable in thermal cycling and a hot corrosive environment.
    Type: Grant
    Filed: October 4, 2000
    Date of Patent: February 25, 2003
    Assignee: Sulzer Metco (US) Inc.
    Inventors: Xiaohan Wei, Mitchell R. Dorfman, Luis F. Correa, Franz Jansen, John Peters
  • Thermal spray powder of dicalcium silicate and coating thereof and manufacture thereof
    Patent number: 6194084
    Abstract: A powder of dicalcium silicate is made by spray drying calcia and silica with incorporation of sodium and phosphorus or stabilized zirconia. The spray dried powder is sintered to form a thermal spray powder. Sprayed coatings have a web of interconnected, randomly oriented microcracks substantially perpendicular to the coating surface. The coatings are stable in thermal cycling and a hot corrosive environment.
    Type: Grant
    Filed: June 23, 1999
    Date of Patent: February 27, 2001
    Assignee: Sulzer Metco Inc.
    Inventors: Xiaohan Wei, Mitchell R. Dorfman, Luis F. Correa, Franz Jansen, John Peters
  • Boat distress apparatus and method
    Patent number: 5280270
    Abstract: An emergency signalling includes a sheet having an optically reflective face, for spreading upon an essentially horizontal surface, such that the optically reflective face is directed essentially upward. The sheet preferably has an emergency message on the optically reflective face in nonreflective letters. The apparatus also preferably includes a strobe light positioned on the sheet, an electric circuit, and an electric power source connected through the electric circuit to the strobe light. There is preferably a switch in the electric circuit for controlling the flow of electric current from the electric power source to the strobe light, and an optical sensor for operating the switch, such that the optical sensor closes the switch when light strikes the optical sensor and opens the switch no light strikes the optical sensor.
    Type: Grant
    Filed: October 8, 1992
    Date of Patent: January 18, 1994
    Inventors: Luis F. Correa, Adel M. Abunassar, Mohammed Kahuk