Patents by Inventor Terry A. Talsma

Terry A. Talsma 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).

  • METHOD AND APPARATUS FOR EXHAUST AFTERTREATMENT OF AN INTERNAL COMBUSTION ENGINE
    Publication number: 20110041482
    Abstract: An exhaust gas aftertreatment device includes a single intake path for an exhaust gas feedstream from an internal combustion engine and a coated substrate including a first substrate portion fluidly in parallel with a second substrate portion. A flow modification device selectively restricts flow of the exhaust gas feedstream exclusively to the first substrate portion, exclusively to the second substrate portion, and concurrently to the first substrate portion and the second substrate portion in controllably variable proportions.
    Type: Application
    Filed: August 20, 2009
    Publication date: February 24, 2011
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Shi-Wai S. Cheng, Terry A. Talsma, Patricia A. Mulawa