Timothy S Skogland

US Patent:

8506095, Aug 13, 2013

Filed:

Nov 20, 2009

Appl. No.:

13/130844

Inventors:

Bradley R. Ray - Woodbury MN, US
Stewart H. Corn - St. Paul MN, US
Timothy S. Skogland - Scandia MN, US
Thomas G. Cheesebrow - Hugo MN, US
Michael J. Petrich - Lake Elmo MN, US

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

G02B 5/122

US Classification:

359529

Abstract:

A transfer article, a retroreflective article and methods of making the same. The transfer article can include an overlay. The retroreflective article can include an optical layer and an overlay. The optical layer can include a front surface and a rear surface, and can include retroreflective optical elements. The overlay can include a front surface and a rear surface adapted to be coupled to the front surface of a substrate, such as the optical layer. The overlay can further include a graphic, such that the graphic is buried with respect to the front surface of the overlay. A method of making the retroreflective article can include applying a graphic to the rear surface of the overlay, and coupling the overlay bearing the graphic to the front surface of a substrate, such as the optical layer.

US Patent:

58445234, Dec 1, 1998

Filed:

Feb 29, 1996

Appl. No.:

8/609092

Inventors:

Joan V. Brennan - Woodbury MN
Scott T. Ginkel - Stillwater MN
Timothy S. Skogland - Scandia MN

Assignee:

Minnesota Mining and Manufacturing Company - St. Paul MN

International Classification:

H01Q 138

US Classification:

343700MS

Abstract:

Electromagnetic and electrical apparatuses use a laminate structure having a thermoplastic elastomer with variable dielectric loss as a dielectric layer. A conductive layer laminated to the thermoplastic elastomer allow use for applications such as printed circuit boards and slot antennas. Additional conductive and dielectric layers still allow use as a printed circuit board as well as other antenna structures. Some embodiments of the apparatuses disclosed exhibit many desired properties, such as flexibility, conformability and weatherability.

US Patent:

57678081, Jun 16, 1998

Filed:

Jan 13, 1995

Appl. No.:

8/372599

Inventors:

William B. Robbins - Maplewood MN
Timothy S. Skogland - Scandia MN

Assignee:

Minnesota Mining and Manufacturing Company - St. Paul MN

International Classification:

H01Q 138

US Classification:

349700MS

Abstract:

A microstrip patch antenna has a first conductive layer adjacent a dielectric substrate. The first conductive layer has a thickness of less than one skin depth of the material of the first conductive layer. A second conductive layer acts as the ground plane for the first conductive layer and a feed network feeds the radiating patch of the first conductive layer.