Patents by Inventor Pei Yoong Koh

Pei Yoong Koh 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).

  • Recovery of hydrohalosilanes from reaction residues
    Patent number: 9695052
    Abstract: Methods of recovering hydrohalosilanes from reaction residues are disclosed. An inorganic halosilane slurry comprising (i) tetrahalosilane, trihalosilane, dihalosilane, or any combination thereof, (ii) silicon particles, and (iii) heavies is passed through a thin-film dryer to remove halosilanes and form a solid residue comprising silicon particles. Heavies also may be removed as the slurry passes through the thin-film dryer.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: July 4, 2017
    Assignee: REC Silicon Inc
    Inventors: Pei Yoong Koh, Anthony D. Thompson
  • RECOVERY OF HYDROHALOSILANES FROM REACTION RESIDUES
    Publication number: 20160002053
    Abstract: Methods of recovering hydrohalosilanes from reaction residues are disclosed. An inorganic halosilane slurry comprising (i) tetrahalosilane, trihalosilane, dihalosilane, or any combination thereof, (ii) silicon particles, and (iii) heavies is passed through a thin-film dryer to remove halosilanes and form a solid residue comprising silicon particles. Heavies also may be removed as the slurry passes through the thin-film dryer.
    Type: Application
    Filed: July 1, 2014
    Publication date: January 7, 2016
    Inventors: Pei Yoong Koh, Anthony D. Thompson