Patents by Inventor Anja Olafsen Sjastad

Anja Olafsen Sjastad 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).

  • Fouling reduction in hydrochlorosilane production
    Patent number: 9463982
    Abstract: Embodiments of a method for reducing iron silicide and/or iron phosphide fouling and/or corrosion in a hydrochlorosilane production plant are disclosed. Sufficient trichlorosilane is included in a silicon tetrachloride process stream to minimize hydrogen chloride formation, thereby inhibiting iron (II) chloride formation and reducing iron silicide and/or iron phosphide fouling, superheater corrosion, or a combination thereof.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: October 11, 2016
    Assignee: REC Silicon Inc
    Inventors: Stein Julsrud, Anja Olafsen Sjastad
  • CORROSION AND FOULING REDUCTION IN HYDROCHLOROSILANE PRODUCTION
    Publication number: 20140314655
    Abstract: Methods for reducing iron silicide and/or iron phosphide fouling and/or corrosion in a hydrochlorosilane production plant are disclosed. Sufficient hydrogen is added to a silicon tetrachloride process stream to inhibit iron (II) chloride formation and reduce iron suicide and/or iron phosphide fouling, superheater corrosion, or a combination thereof. Trichlorosilane also may be added to the silicon tetrachloride process stream.
    Type: Application
    Filed: April 2, 2014
    Publication date: October 23, 2014
    Applicant: REC Silicon Inc
    Inventors: Stein Julsrud, Anja Olafsen Sjastad