Patents by Inventor William Koivula

William Koivula 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 of spin forming a catalytic converter
    Publication number: 20080000084
    Abstract: A method is provided of manufacturing a catalytic converter using a spin forming operation. At least one catalytic element is inserted in a tubular member. At least one spin forming wheel is provided for forming the tubular member. A force is applied to a first end section of the tubular member by the at least one spin forming wheel for forming a first conical-shaped end. A force is applied to a second end section of the tubular member by the at least one spin forming wheel for forming a second conical-shaped end. A force is applied by the at least one spin forming wheel to the outer surface of the tubular member between the first conical-shaped end and the second conical-shaped end for forming an indentation therebetween and preventing axial movement of the at least one catalytic element.
    Type: Application
    Filed: June 23, 2006
    Publication date: January 3, 2008
    Inventors: Haimian Cai, William Koivula
  • Heat shield for a catalytic converter
    Publication number: 20050118451
    Abstract: A heat shield for a catalytic converter includes a substrate and a coating made from Al—Si.
    Type: Application
    Filed: December 2, 2003
    Publication date: June 2, 2005
    Inventors: Hang Li, Madhavan Narayanan, William Koivula, Niladri Das, Robert Sanderson