Patents by Inventor Dave Schwierman

Dave Schwierman 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).

  • Processes for removing carbon disulfide from symmetrical and asymmetrical sulfide product streams
    Patent number: 10774040
    Abstract: Processes for removing carbon disulfide from product streams containing a sulfide compound are performed by contacting the product stream with an alkanolamine and converting the carbon disulfide to a higher boiling point product, thereby reducing or eliminating carbon disulfide from the product stream. Subsequent removal of the higher boiling point product via distillation can lead to a purified sulfide stream with high purity.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: September 15, 2020
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Kenneth M. Lassen, Michael S. Matson, Daniel M. Hasenberg, Dave Schwierman