Gregory B Wagner

6616895, Sep 9, 2003

Mar 23, 2001

09/815461

Matthew P. Dugas - St. Paul MN
Gregory L. Wagner - Roseville MN

Advanced Research Corporation - Minneapolis MN

G01N 2706

422 8201, 422 681, 422 8202, 436 2, 436 72, 436 86, 436 89, 436151, 435 4, 435 6, 4352872, 4352852, 4352873, 438 49

A solid state device is formed through thin film deposition techniques which results in a self-supporting thin film layer that can have a precisely defined channel bored therethrough. The device is useful in the chacterization of polymer molecules by measuring changes in various electrical characteristics as molecules pass through the channel. To form the device, a thin film layer having various patterns of electrically conductive leads are formed on a silicon substrate. Using standard lithography techniques, a relatively large or micro-scale aperture is bored through the silicon substrate which in turn exposes a portion of the thin film layer. This process does not affect the thin film. Subsequently, a high precision material removal process is used (such as a focused ion beam) to bore a precise nano-scale aperture through the thin film layer that coincides with the removed section of the silicon substrate.

7106544, Sep 12, 2006

May 7, 2004

10/840857

Matthew P. Dugas - St. Paul MN, US
Theodore A. Schwarz - St. Paul MN, US
Gregory L. Wagner - Arden Hills MN, US

Advanced Research Corporation - Minneapolis MN

G11B 21/02

360 75, 360121

Methods and systems for data recording and reading for increasing overall tape data storage density, especially for data written in azimuth style. The principles of the invention provide servo formats and systems that allow accurate on track guidance for higher density applications and that are less sensitive to off track error. Preferred embodiments of the invention offer servo formats and systems of the invention that allows positive track and group identification at the beginning, end, and optionally periodically along the length of a tape.

7235184, Jun 26, 2007

Jun 13, 2003

10/461307

Matthew P. Dugas - St. Paul MN, US
Gregory L. Wagner - Roseville MN, US

Advanced Research Corporation - Minneapolis MN

B82B 3/00

216 2, 216 13, 216 56, 216 66, 977721, 977781

A solid state device is formed through thin film deposition techniques which results in a self-supporting thin film layer that can have a precisely defined channel bored therethrough. The device is useful in the chacterization of polymer molecules by measuring changes in various electrical characteristics as molecules pass through the channel. To form the device, a thin film layer having various patterns of electrically conductive leads are formed on a silicon substrate. Using standard lithography techniques, a relatively large or micro-scale aperture is bored through the silicon substrate which in turn exposes a portion of the thin film layer. This process does not affect the thin film. Subsequently, a high precision material removal process is used (such as a focused ion beam) to bore a precise nano-scale aperture through the thin film layer that coincides with the removed section of the silicon substrate.

7391587, Jun 24, 2008

Aug 28, 2006

11/510940

Matthew P. Dugas - St. Paul MN, US
Theodore A. Schwarz - St. Paul MN, US
Gregory L. Wagner - Arden Hills MN, US

Advanced Research Corporation - White Bear MN

G11B 5/584
G11B 21/02

360 7714, 360 75

Methods and systems for data recording and reading for increasing overall tape data storage density, especially for data written in azimuth style. The principles of the invention provide servo formats and systems that allow accurate on track guidance for higher density applications and that are less sensitive to off track error. Preferred embodiments of the invention offer servo formats and systems of the invention that allows positive track and group identification at the beginning, end, and optionally periodically along the length of a tape.

7393066, Jul 1, 2008

Aug 28, 2006

11/510941

Matthew P. Dugas - St. Paul MN, US
Theodore A. Schwarz - St. Paul MN, US
Gregory L. Wagner - Arden Hills MN, US

Advanced Research Corporation - White Bear MN

G11B 5/584
G11B 21/02

360 7714, 360 75

Methods and systems for data recording and reading for increasing overall tape data storage density, especially for data written in azimuth style. The principles of the invention provide servo formats and systems that allow accurate on track guidance for higher density applications and that are less sensitive to off track error. Preferred embodiments of the invention offer servo formats and systems of the invention that allows positive track and group identification at the beginning, end, and optionally periodically along the length of a tape.

7543501, Jun 9, 2009

Oct 27, 2006

11/589326

Vernon Michael Cottles - Maplewood MN, US
Gregory Lawrence Wagner - Roseville MN, US

Advanced Research Corporation - White Bear Lake MN

G01L 7/08

73715

The present invention is system and method for providing a self-calibrating pressure sensor. A pressure sensor apparatus comprises a diaphragm, at least one driving element operably coupled to the diaphragm configured to induce deflection in the diaphragm, and at least one strain gauge coupled to the diaphragm. The at least one strain gauge measures the deflection of the diaphragm. Typically, the driving elements will be piezoelectric drivers and will be operably coupled to the diaphragm. A method for evaluating a pressure sensor comprises inducing deflection in a diaphragm, measuring the deflection, determining the frequency-dependent response, calculating mechanical characteristics of the diaphragm from the frequency-dependent response, and calculating a response coefficient for the diaphragm based in part on said mechanical characteristics. The response coefficient is used to evaluate the sensor. The sensor can then be re-calibrated or self-calibrated based on the response coefficient.

7800862, Sep 21, 2010

Feb 18, 2005

11/061253

Matthew P. Dugas - St. Paul MN, US
Gregory L. Wagner - Arden Hills MN, US
Marlow L. Roberts - Champlin MN, US

Advanced Research Corporation - White Bear Lake MN

G11B 5/265
G11B 5/29
G11B 5/31

36011906, 360121, 36012535

A magnetic head and method for making same which can be used for formatting or writing servo tracks or data on a tape. In one example, the magnetic head may include a magnetic thin film layer; at least one gap defined in the magnetic thin film layer; and at least one secondary sub-gap structure within the magnetic thin film layer, the at least one gap positioned proximate the at least one secondary sub-gap structure. Through the use of the secondary sub-gap structure, the gap (i. e. a record gap or channel) can be made thinner than in conventional heads.

7832084, Nov 16, 2010

Aug 28, 2006

11/510902

Matthew P. Dugas - St. Paul MN, US
Theodore A. Schwarz - St. Paul MN, US
Gregory L. Wagner - Arden Hills MN, US

Advanced Research Corporation - White Bear Lake MN

G11B 5/127
H04R 31/00

2960307, 2960313, 2960314, 2960316, 2960318, 216 62, 216 65, 216 66, 360121, 360122, 360317, 451 5, 451 41

A method of recording servo information includes writing servo information in a data storage medium using a compound magnetic recording head. The compound magnetic recording head has a substrate including first and second magnetically permeable substrate portions and a substantially non-magnetic member interposed between the first and second magnetically permeable substrate portions. A magnetically permeable layer is provided over the first and second magnetically permeable substrate portions of the substrate and includes first and second writing gap features associated with the first and second substrate portions. The writing gap features are formed using a patterned mask layer over the magnetically permeable layer, wherein the patterned mask layer comprises first and second patterned gap features corresponding to the first and second writing gap features.