Patents by Inventor Ben Li Luan

Ben Li Luan 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).

  • Laser chemical fabrication of nanostructures
    Patent number: 6864190
    Abstract: Disclosed is a process for fabricating luminescent porous material, the process comprising pre-treating a substrate (e.g. crystalline silicon) with laser radiation (e.g from a Nd:YAG laser) in a predetermined pattern followed by exposing the irradiated substrate to a chemical stain etchant (e.g. HF:HNO3:H2O) to produce a luminescent nanoporous material. Luminescent porous material having a luminescence maximum greater than about 2100 meV may be produced by this method. Such nanoporous materials are useful in optoelectronic and other semiconductor devices.
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: March 8, 2005
    Assignee: National Research Council of Canada
    Inventors: Yujie Han, Suwas Nikumb, Ben Li Luan, John Nagata
  • Laser chemical fabrication of nanostructures
    Publication number: 20040076813
    Abstract: Disclosed is a process for fabricating luminescent porous material, the process comprising pre-treating a substrate (e.g. crystalline silicon) with laser radiation (e.g from a Nd:YAG laser) in a predetermined pattern followed by exposing the irradiated substrate to a chemical stain etchant (e.g. HF:HNO3:H2O) to produce a luminescent nanoporous material. Luminescent porous material having a luminescence maximum greater than about 2100 meV may be produced by this method. Such nanoporous materials are useful in optoelectronic and other semiconductor devices.
    Type: Application
    Filed: October 17, 2002
    Publication date: April 22, 2004
    Applicant: NATIONAL RESEARCH COUNCIL OF CANADA
    Inventors: Yujie Han, Suwas Krishna Nikumb, Ben Li Luan, John Nagata
  • Acousto-immersion coating and process for magnesium and its alloy
    Patent number: 6669997
    Abstract: A process for coating an object formed of magnesium or a magnesium alloy comprising the steps of: immersion coating the object in a sonicated bath to form an undercoat and topcoating the object to form a topcoat. When desirable to protect against topcoat failure, the undercoat may be equally noble or more noble than the topcoat. If topcoat failure is not a concern, the nobility of the topcoat relative to the undercoat need not be considered. The process promotes uniform coating of a magnesium and its alloys.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: December 30, 2003
    Assignee: National Research Council of Canada
    Inventors: Ben Li Luan, Joy Elizabeth Gray
  • ACOUSTO-IMMERSION COATING AND PROCESS FOR MAGNESIUM AND ITS ALLOYS
    Publication number: 20030203232
    Abstract: A process for coating an object formed of magnesium or a magnesium alloy comprising the steps of: immersion coating the object in a sonicated bath to form an undercoat and topcoating the object to form a topcoat. When desirable to protect against topcoat failure, the undercoat may be equally noble or more noble than the topcoat. If topcoat failure is not a concern, the nobility of the topcoat relative to the undercoat need not be considered. The process promotes uniform coating of a magnesium and its alloys.
    Type: Application
    Filed: March 26, 2002
    Publication date: October 30, 2003
    Inventors: Ben Li Luan, Joy Elizabeth Gray