Patents by Inventor Darryl F. Klassen

Darryl F. Klassen 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).

  • Furnace filter adapters and braces
    Patent number: 8388717
    Abstract: An adapter is provided for placement within a furnace filter bay having a flow of air therethrough. The filter bay is for receiving a furnace filter. The adapter includes a filter abutment face for abutment with at least a portion of the furnace filter, a mounting face parallel to the flow of air and attachment means permitting removable attachment of the adapter to the furnace filter bay. The adapter allows filters of smaller depth than the filters originally designed for use within the filter bay to be used, thereby eliminating the need for purchasing the original filters. A brace is also provided for the same purpose. A kit is described that includes the adapter and/or brace, along with instructions for installation thereof within the filter bay.
    Type: Grant
    Filed: September 17, 2009
    Date of Patent: March 5, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: David E. Livingstone, Darryl F. Klassen, David A. Beckett
  • FURNACE FILTER ADAPTERS AND BRACES
    Publication number: 20100101197
    Abstract: An adapter is provided for placement within a furnace filter bay having a flow of air therethrough. The filter bay is for receiving a furnace filter. The adapter includes a filter abutment face for abutment with at least a portion of the furnace filter, a mounting face parallel to the flow of air and attachment means permitting removable attachment of the adapter to the furnace filter bay. The adapter allows filters of smaller depth than the filters originally designed for use within the filter bay to be used, thereby eliminating the need for purchasing the original filters. A brace is also provided for the same purpose. A kit is described that includes the adapter and/or brace, along with instructions for installation thereof within the filter bay.
    Type: Application
    Filed: September 17, 2009
    Publication date: April 29, 2010
    Inventors: David E. Livingstone, Darryl F. Klassen, David A. Beckett
  • Sustained release microcapsules
    Patent number: 7179480
    Abstract: A sustained release microcapsule comprises (a) an interfacially-polymerized polymer shell comprising at least one shell stabilizer; and (b) a fill composition comprising (1) at least one semiochemical and (2) at least one fill stabilizer.
    Type: Grant
    Filed: April 24, 2002
    Date of Patent: February 20, 2007
    Assignee: 3M Innovative Properties Company
    Inventor: Darryl F. Klassen
  • Sustained release microcapsules
    Publication number: 20030202999
    Abstract: A sustained release microcapsule comprises (a) an interfacially-polymerized polymer shell comprising at least one shell stabilizer; and (b) a fill composition comprising (1) at least one semiochemical and (2) at least one fill stabilizer.
    Type: Application
    Filed: April 24, 2002
    Publication date: October 30, 2003
    Applicant: 3M Innovative Properties Company
    Inventor: Darryl F. Klassen
  • Stabilized active materials
    Patent number: 6540991
    Abstract: A stabilized insect mating disruption pheromone compositions comprising an insect pheromone and 2,2′-Methylenebis(6-t-butyl-p-cresol). Methods of use and microcapsules containing these compositions are also provided.
    Type: Grant
    Filed: April 6, 2001
    Date of Patent: April 1, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Darryl F. Klassen, David J. Muir
  • STABILIZED ACTIVE MATERIALS
    Publication number: 20020146387
    Abstract: A stabilized insect mating disruption pheromone compositions comprising an insect pheromone and 2,2′-Methylenebis(6-t-butyl-p-cresol). Methods of use and microcapsules containing these compositions are also provided.
    Type: Application
    Filed: April 6, 2001
    Publication date: October 10, 2002
    Inventors: Darryl F. Klassen, David J. Muir