Patents by Inventor Di Gao

Di Gao 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).

  • Superoleophobic and superhydrophilic fabric filters for rapid water-oil separation
    Patent number: 8695810
    Abstract: Product, method of making product, and technique for using product to separate oil from water via a filter, such as cotton, polyester, or leather, coated with a chemical that blocks oil while allowing water to pass therethrough.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: April 15, 2014
    Assignee: University of Pittsburgh—Of the Commonwealth System of Higher Education
    Inventor: Di Gao
  • Durable superhydrophobic coatings
    Patent number: 8513342
    Abstract: Durable superhydrophobic coating composition having a composition ranging from about 10 to about 80 w.t. % of an acrylic polymer resin, from about 5 to about 40 w.t. % of a polysiloxane oil, from about 1 to about 50 w.t. % of hydrophobic particles, from about 0.1 to about 10 w.t. % metal oxides, and the remainder being one or more solvents and optionally other additives. Methods of making the coating, as well as coated substrates, are also provided.
    Type: Grant
    Filed: October 18, 2010
    Date of Patent: August 20, 2013
    Assignee: University of Pittsburgh—Of the Commonwealth System of Higher Education
    Inventors: Di Gao, Liangliang Cao
  • Superoleophobic and Superhydrophilic Fabric Filters for Rapid Water-Oil Separation
    Publication number: 20110303620
    Abstract: Product, method of making product, and technique for using product to separate oil from water via a filter, such as cotton, polyester, or leather, coated with a chemical that blocks oil while allowing water to pass therethrough.
    Type: Application
    Filed: June 10, 2011
    Publication date: December 15, 2011
    Inventor: Di Gao
  • DURABLE SUPERHYDROPHOBIC COATINGS
    Publication number: 20110111656
    Abstract: Durable superhydrophobic coating composition having a composition ranging from about 10 to about 80 w.t. % of an acrylic polymer resin, from about 5 to about 40 w.t. % of a polysiloxane oil, from about 1 to about 50 w.t. % of hydrophobic particles, from about 0.1 to about 10 w.t. % metal oxides, and the remainder being one or more solvents and optionally other additives. Methods of making the coating, as well as coated substrates, are also provided.
    Type: Application
    Filed: October 18, 2010
    Publication date: May 12, 2011
    Inventors: Di Gao, Liangliang Cao
  • ANTI-ICING SUPERHYDROPHOBIC COATINGS
    Publication number: 20100314575
    Abstract: Superhydrophobic coating compositions are provided. The compositions comprise nanoparticles between 5-100 nm in size and a polymeric binder. The compositions are effective in preventing ice formation on the surface of various substrates.
    Type: Application
    Filed: June 15, 2010
    Publication date: December 16, 2010
    Inventors: Di Gao, Andrew K. Jones, Vinod K. Sikka
  • Selective etching of silicon carbide films
    Patent number: 7151277
    Abstract: A method of etching silicon carbide using a nonmetallic mask layer. The method includes providing a silicon carbide substrate; forming a non-metallic mask layer by applying a layer of material on the substrate; patterning the mask layer to expose underlying areas of the substrate; and etching the underlying areas of the substrate with a plasma at a first rate, while etching the mask layer at a rate lower than the first rate.
    Type: Grant
    Filed: July 3, 2003
    Date of Patent: December 19, 2006
    Assignee: The Regents of the University of California
    Inventors: Di Gao, Roger T. Howe, Roya Maboudian
  • Selective etching of silicon carbide films
    Publication number: 20050001276
    Abstract: A method of etching silicon carbide using a nonmetallic mask layer. The method includes providing a silicon carbide substrate; forming a non-metallic mask layer by applying a layer of material on the substrate; patterning the mask layer to expose underlying areas of the substrate; and etching the underlying areas of the substrate with a plasma at a first rate, while etching the mask layer at a rate lower than the first rate.
    Type: Application
    Filed: July 3, 2003
    Publication date: January 6, 2005
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Di Gao, Roger Howe, Roya Maboudian