Patents by Inventor Ridwan Sakidja

Ridwan Sakidja 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).

  • Patent number: 8980434
    Abstract: Alumina-containing coatings based on molybdenum (Mo), silicon (Si), and boron (B) (“MoSiB coatings”) that form protective, oxidation-resistant scales on ceramic substrate at high temperatures are provided. The protective scales comprise an aluminoborosilicate glass, and may additionally contain molybdenum. Two-stage deposition methods for forming the coatings are also provided.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: March 17, 2015
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: John Harry Perepezko, Ridwan Sakidja, Patrick Ritt
  • Patent number: 8795845
    Abstract: Methods for the low-temperature synthesis of an integrated, corrosion-resistant coating structure for metal substrates by means of multi-component pack cementation are provided. The synthesis of the integrated coating structures at low temperatures can avoid or minimize degradation of the mechanical properties of the substrates. The integrated coating structures can increase the lifetime of high temperature steels under severe steam environments and, therefore, provide a technological enabler for the high-temperature operation of steam power generation plants.
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: August 5, 2014
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: John Harry Perepezko, Ridwan Sakidja
  • Publication number: 20130157064
    Abstract: Alumina-containing coatings based on molybdenum (Mo), silicon (Si), and boron (B) (“MoSiB coatings”) that form protective, oxidation-resistant scales on ceramic substrate at high temperatures are provided. The protective scales comprise an aluminoborosilicate glass, and may additionally contain molybdenum. Two-stage deposition methods for forming the coatings are also provided.
    Type: Application
    Filed: December 16, 2011
    Publication date: June 20, 2013
    Inventors: John Harry Perepezko, Ridwan Sakidja, Patrick Ritt
  • Patent number: 8097303
    Abstract: Methods for producing multilayered, oxidation-resistant structures on substrates are provided. The methods comprise depositing silicon dioxide on a substrate comprising molybdenum and boron and annealing the silicon dioxide at a temperature and for a time sufficient to form a coating comprising a borosilicate scale on the substrate.
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: January 17, 2012
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: John H. Perepezko, Joon S. Park, Ridwan Sakidja
  • Publication number: 20100119866
    Abstract: Methods for the low-temperature synthesis of an integrated, corrosion-resistant coating structure for metal substrates by means of multi-component pack cementation are provided. The synthesis of the integrated coating structures at low temperatures can avoid or minimize degradation of the mechanical properties of the substrates. The integrated coating structures can increase the lifetime of high temperature steels under severe steam environments and, therefore, provide a technological enabler for the high-temperature operation of steam power generation plants.
    Type: Application
    Filed: November 10, 2008
    Publication date: May 13, 2010
    Applicant: WISCONSIN ALUMNI RESEARCH FOUNDATION
    Inventors: John Harry Perepezko, Ridwan Sakidja
  • Publication number: 20090291312
    Abstract: The invention provides oxidation resistant coatings for transition metal substrates and transition metal alloy substrates and method for producing the same. The coatings may be multilayered, multiphase coatings or gradient multiphase coatings. In some embodiments the transition metal alloys may be boron-containing molybdenum silicate-based binary and ternary alloys. The coatings are integrated into the substrates to provide durable coatings that stand up under extreme temperature conditions.
    Type: Application
    Filed: May 29, 2009
    Publication date: November 26, 2009
    Applicant: WISCONSIN ALUMNI RESEARCH FOUNDATION
    Inventors: John H. Perepezko, Joon S. Park, Ridwan Sakidja
  • Publication number: 20060228475
    Abstract: The invention provides oxidation resistant coatings for transition metal substrates and transition metal alloy substrates and method for producing the same. The coatings may be multilayered, multiphase coatings or gradient multiphase coatings. In some embodiments the transition metal alloys may be boron-containing molybdenum silicate-based binary and ternary alloys. The coatings are integrated into the substrates to provide durable coatings that stand up under extreme temperature conditions.
    Type: Application
    Filed: December 12, 2005
    Publication date: October 12, 2006
    Inventors: John Perepezko, Joon Park, Ridwan Sakidja
  • Patent number: 7005191
    Abstract: The invention provides oxidation resistant coatings for transition metal substrates and transition metal alloy substrates and method for producing the same. The coatings may be multilayered, multiphase coatings or gradient multiphase coatings. In some embodiments the transition metal alloys may be boron-containing molybdenum silicate-based binary and ternary alloys. The coatings are integrated into the substrates to provide durable coatings that stand up under extreme temperature conditions.
    Type: Grant
    Filed: May 2, 2003
    Date of Patent: February 28, 2006
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: John H. Perepezko, Joon S. Park, Ridwan Sakidja
  • Publication number: 20040219295
    Abstract: The invention provides oxidation resistant coatings for transition metal substrates and transition metal alloy substrates and method for producing the same. The coatings may be multilayered, multiphase coatings or gradient multiphase coatings. In some embodiments the transition metal alloys may be boron-containing molybdenum silicate-based binary and ternary alloys. The coatings are integrated into the substrates to provide durable coatings that stand up under extreme temperature conditions.
    Type: Application
    Filed: May 2, 2003
    Publication date: November 4, 2004
    Inventors: John H. Perepezko, Joon S. Park, Ridwan Sakidja