David W Kuhns

US Patent:

6555823, Apr 29, 2003

Filed:

Dec 22, 2000

Appl. No.:

09/746884

Inventors:

David W. Kuhns - Minneapolis MN
Thomas M. Clausen - Minneapolis MN
Shawn W. Lee - Vadnais Heights MN
Steven R. Vanhoose - Stillwater MN

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

G01J 142

US Classification:

250372, 250216, 250221, 25022711, 2504921

Abstract:

The invention is a pneumatically actuated energy collection device. The device includes a support which has an energy collector thereon. A shutter is slidably attached to the support and can be moved between a first âclosedâ position and a second âopenâ position. In its first position, the shutter covers the collector and in its second position, the shutter uncovers the collector. The shutter is biased into one of the positions. A chamber is disposed adjacent to the shutter so that when the chamber is pressurized, the shutter bias is overcome and the shutter is moved between the first position and the second position.

US Patent:

6805940, Oct 19, 2004

Filed:

Sep 10, 2001

Appl. No.:

09/952239

Inventors:

David C. Koskenmaki - Pine Mountain Club CA
David W. Kuhns - Minneapolis MN

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

B32B 310

US Classification:

428138, 428156, 428131, 428209, 174255, 174256, 174258, 361739, 361746, 361750, 361762

Abstract:

A method for making an electrically conductive pattern, including: (a) depositing on a substrate a metal powder composition consisting essentially of at least one metal powder, wherein the substrate is selected from the group consisting of paper and materials that are at least about 10% compressible; and (b) densifying the composition to form a conductive pattern on the substrate.

US Patent:

6816125, Nov 9, 2004

Filed:

Mar 1, 2003

Appl. No.:

10/377960

Inventors:

David W. Kuhns - Minneapolis MN
David C. Koskenmaki - Frazier Park CA

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

G01V 1500

US Classification:

343880, 340508, 340509, 343728, 343729, 343895

Abstract:

Manufacturing techniques are described for forming electrical components. For example, a layer of a metal powder composition is deposited onto at least a portion of a substrate. Pressure is applied to the metal powder composition by hydraulic press that has one or more projections in order to capture a pattern on the substrate. The metal powder composition compressed by the projections of the hydraulic press adhere to the substrate to form the captured pattern. The metal powder composition in regions not compressed by the projections of hydraulic press do not adhere to the substrate and may be removed. The metal powder composition may be compressed to form electrical components, such as antennae, capacitor plates, conduction pads and the like, for use in an electronic surveillance system (EAS), a radio frequency identification (RFID) system, or the like.

US Patent:

6952264, Oct 4, 2005

Filed:

Dec 13, 2001

Appl. No.:

10/023376

Inventors:

David W. Kuhns - Minneapolis MN, US
Thomas M. Clausen - Minneapolis MN, US
Olester Benson, Jr. - Woodbury MN, US
Steven R. Vanhoose - Stillwater MN, US

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

G01N021/84

US Classification:

356431, 356429

Abstract:

The invention includes a method for collecting radiation. An electromechanical radiation collection device is disposed in a roll to collect radiation directed at the roll. The invention is also an apparatus comprising a roll having an outer surface. An electromechanical radiation collection device is disposed in the roll.

US Patent:

7102522, Sep 5, 2006

Filed:

Dec 24, 2002

Appl. No.:

10/328989

Inventors:

David W. Kuhns - Minneapolis MN, US

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

G08B 13/14

US Classification:

3405727, 3405721, 3405726, 343700 MS, 343790, 343880, 343895

Abstract:

A tamper-indicating radio frequency identification device made of densified metal powder and to a sticker including the same device. The present invention also relates to radio frequency identification antenna made of densified metal powder and to a sticker including the same antenna. The present invention also relates to methods of indicating that a radio frequency identification antenna or sticker has been tampered with.

US Patent:

7165959, Jan 23, 2007

Filed:

Sep 9, 2003

Appl. No.:

10/657859

Inventors:

Larry D. Humlicek - Ham Lake MN, US
Daniel H. Carlson - Arden Hills MN, US
James N. Dobbs - Woodbury MN, US
Samuel Hunter, legal representative - Mendota Heights MN, US
Thelma Hunter, legal representative - Mendota Heights MN, US
John T. Strand - Stillwater MN, US
Gregory F. King - Minneapolis MN, US
David W. Kuhns - Minneapolis MN, US
John S. Huizinga - Dellwood MN, US
William V. Dower - Austin TX, US

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

B28B 17/00

US Classification:

4251744, 425115, 425327, 425363, 425385, 425150, 264405, 264494, 264410, 264284

Abstract:

An apparatus for casting a patterned surface on both sides of a web. The apparatus includes a first patterned roll; a second pattered roll; and a means for rotating the first and second patterned rolls such that their patterns are transferred to opposite sides of the web while it is in continuous motion. During this process, their patterns are maintained in continuous registration to within at least 100 microns, and preferably at least 20 microns.

US Patent:

7224529, May 29, 2007

Filed:

Sep 9, 2003

Appl. No.:

10/658730

Inventors:

Vincent W. King - Woodbury MN, US
John S. Huizinga - Dellwood MN, US
William V. Dower - Austin TX, US
David W. Kuhns - Minneapolis MN, US
Gregory F. King - Minneapolis MN, US
John T. Strand - Stillwater MN, US
Samuel Hunter - Mendota Heights MN, US
Thelma Hunter - Mendota Heights MN, US
James N. Dobbs - Woodbury MN, US
Daniel H. Carlson - Arden Hills MN, US
Larry D. Humlicek - Ham Lake MN, US

Assignee:

3M Innovative Properties Company - St-Paul MN

International Classification:

G02B 27/10

US Classification:

359619, 359625

Abstract:

A microreplicated article is disclosed. The article includes a web including first and second opposed surfaces. The first surface includes a first microreplicated structure having a plurality of first features. The second surface includes a second microreplicated structure having a plurality of second features. Corresponding opposed features cooperate to form a lens features.

US Patent:

7237330, Jul 3, 2007

Filed:

Sep 29, 2004

Appl. No.:

10/952673

Inventors:

David C. Koskenmaki - Pine Mountain Club CA, US
David W. Kuhns - Minneapolis MN, US

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

H01R 43/00

US Classification:

29825, 29830, 29831, 29846, 174255, 361739

Abstract:

Conductive circuits and methods of making conductive circuits are disclosed.