Patents by Inventor Christopher K. Enstrom

Christopher K. Enstrom 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).

  • Air filter
    Patent number: D705411
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: May 20, 2014
    Assignee: 3M Innovative Properties Company
    Inventors: Christopher K. Enstrom, Dennis M. Glass, Jonathan M. Lise, Stephen M. Sanocki
  • Sheet material
    Patent number: D725390
    Type: Grant
    Filed: August 16, 2013
    Date of Patent: March 31, 2015
    Assignee: 3M Innovative Properties Company
    Inventors: Stephen M. Sanocki, Christopher K. Enstrom, Glen O. Gregerson, Daniel E. Johnson, Andrew R. Fox
  • Air filter
    Patent number: D732153
    Type: Grant
    Filed: August 16, 2013
    Date of Patent: June 16, 2015
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Stephen M. Sanocki, Christopher K. Enstrom, Glen O. Gregerson, Daniel E. Johnson, Andrew R. Fox