Ronald David Jesme

US Patent:

6737973, May 18, 2004

Filed:

Oct 15, 2001

Appl. No.:

09/978329

Inventors:

Ronald David Jesme - Plymouth MN

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

G08B 1314

US Classification:

3405721, 3405391, 3406933, 455108

Abstract:

In general, the invention is directed to an efficient amplifier for use in radio-frequency identification (RFID) applications. In particular, the invention provides a highly efficient amplifier that requires little power, yet has significant modulation bandwidth to achieve high data communication rates. The amplifier makes use of many components of a class E amplifier including a first transistor, an inductor coupling the first transistor to a power supply, and a shunt capacitor connected in parallel to the first transistor. A second transistor is connected in parallel to the first transistor. A controller selectively controls the first and second transistors to achieve amplitude modulation at a high modulation bandwidth.

US Patent:

6778087, Aug 17, 2004

Filed:

Jun 15, 2001

Appl. No.:

09/882790

Inventors:

Anthony M. Belka - Stillwater MN
Ronald D. Jesme - Plymouth MN
Peter J. Zarembo - Shoreview MN

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

G08B 1314

US Classification:

3405723, 3405727, 3405728, 335284

Abstract:

A device is disclosed for activating and deactivating magnetic electronic article surveillance (EAS) markers. In one embodiment, the device includes control circuitry comprising a coil, such as a solenoid-type coil, that provides a magnetic field in one direction and another coil that provides a magnetic field in a substantially perpendicular direction, so that EAS markers that pass through the device are positioned generally in the plane defined by the first and second directions.

US Patent:

6909326, Jun 21, 2005

Filed:

Mar 31, 2004

Appl. No.:

10/814046

Inventors:

Ronald David Jesme - Plymouth MN, US

Assignee:

3M Innovative Properties Comapny - St. Paul MN

International Classification:

H03F003/217

US Classification:

330251, 330207 A, 330 10

Abstract:

In general, the invention is directed to an efficient amplifier for use in radio-frequency identification (RFID) applications. In particular, the invention provides a highly efficient amplifier that requires little power, yet has significant modulation bandwidth to achieve high data communication rates. The amplifier makes use of many components of a class E amplifier including a first transistor, an inductor coupling the first transistor to a power supply, and a shunt capacitor connected in parallel to the first transistor. A second transistor is connected in parallel to the first transistor. A controller selectively controls the first and second transistors to achieve amplitude modulation at a high modulation bandwidth.

US Patent:

7119692, Oct 10, 2006

Filed:

Nov 10, 2003

Appl. No.:

10/705677

Inventors:

Seth A. Lieffort - Eagan MN, US
Edward D. Goff - Mahtomedi MN, US
Ronald D. Jesme - Plymouth MN, US
Thomas C. Mercer - Maplewood MN, US

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

G08B 13/14

US Classification:

3405724, 340528, 3405391, 340571, 3405727

Abstract:

Techniques for detecting radio-frequency identification (RFID) tags are disclosed. For example, an exit control system is described that detects unauthorized removal of articles from a protected facility. A series of antennas are setup to produce interrogation corridors located near the exit of the protected area. RFID tags are attached to the articles to be protected. Each tag includes information that uniquely identifies the article to which it is affixed and status information as to whether the articles removal from the facility is authorized. The RF reader outputs RF signals through the antennas to create electromagnetic fields within the interrogation corridors. The reader outputs RF power from a single port to the multiple antennas via a splitter/combiner. In this way, a single RF reader with only one transmitter/receiver port simultaneously interrogates multiple antennas. A variety of techniques are described by which the reader can detect the removal of an unauthorized article.

US Patent:

7372364, May 13, 2008

Filed:

Nov 10, 2003

Appl. No.:

10/705733

Inventors:

Thomas C. Mercer - Maplewood MN, US
Ronald D. Jesme - Plymouth MN, US
Edward D. Goff - Mahtomedi MN, US

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

G08B 13/00

US Classification:

3405721, 3405724, 340 101, 340 102

Abstract:

Techniques for detecting radio-frequency identification (RFID) tags are disclosed. For example, an exit control system is described that detects unauthorized removal of articles from a protected facility. A series of antennas are setup to produce interrogation corridors located near the exit of the protected area. RFID tags are attached to the articles to be protected. Each tag includes information that uniquely identifies the article to which it is affixed and status information as to whether the articles removal from the facility is authorized. The RF reader outputs RF signals through the antennas to create electromagnetic fields within the interrogation corridors. The reader outputs RF power from a single port to the multiple antennas via a splitter/combiner. In this way, a single RF reader with only one transmitter/receiver port simultaneously interrogates multiple antennas. A variety of techniques are described by which the reader can detect the removal of an unauthorized article.

US Patent:

7405663, Jul 29, 2008

Filed:

Oct 9, 2006

Appl. No.:

11/539716

Inventors:

Seth A. Lieffort - Eagan MN, US
Edward D. Goff - Mahtomedi MN, US
Ronald D. Jesme - Plymouth MN, US
Thomas C. Mercer - Maplewood MN, US

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

G08B 13/14
H04Q 17/62

US Classification:

3405724, 34053911, 340571, 340528, 3405681, 340 101, 340 104, 340 1041, 34082558

Abstract:

Techniques for detecting radio-frequency identification (RFID) tags are disclosed. For example, an exit control system is described that detects unauthorized removal of articles from a protected facility. A series of antennas are setup to produce interrogation corridors located near the exit of the protected area. RFID tags are attached to the articles to be protected. Each tag includes information that uniquely identifies the article to which it is affixed and status information as to whether the articles removal from the facility is authorized. The RF reader outputs RF signals through the antennas to create electromagnetic fields within the interrogation corridors. The reader outputs RF power from a single port to the multiple antennas via a splitter/combiner. In this way, a single RF reader with only one transmitter/receiver port simultaneously interrogates multiple antennas. A variety of techniques are described by which the reader can detect the removal of an unauthorized article.

US Patent:

7411500, Aug 12, 2008

Filed:

Sep 14, 2005

Appl. No.:

11/226102

Inventors:

Michael E. Hamerly - Vadnais Heights MN, US
Barry W. Kostyk - Stillwater MN, US
Robert D. Lorentz - North Oaks MN, US
Robert A. Sainati - Bloomington MN, US
James P. McGee - Cedar MN, US
Subhalakshmi M. Ananthanarayanan - Woodbury MN, US
John W. Van Bogart - Minneapolis MN, US
Ronald D. Jesme - Plymouth MN, US

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

G08B 13/14

US Classification:

3405721, 3405724, 340 101

Abstract:

Methods of monitoring items and/or materials from a manufacturing process. One embodiment of the invention provides a method of monitoring items and/or materials from a manufacturing process using a plurality of RFID tagged containers, and a plurality of stations associated with different portions of the manufacturing process, where each station includes an RFID reader.

US Patent:

7591415, Sep 22, 2009

Filed:

Sep 28, 2004

Appl. No.:

10/953200

Inventors:

Ronald D. Jesme - Plymouth MN, US

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

G06K 5/00

US Classification:

235380, 235451, 235381, 340 586, 340 101, 3405721

Abstract:

A passport reader for processing a passport having an RFID element associated therewith. A exemplary embodiment of the invention provides a passport reader for processing a passport having an RFID element associated therewith including an RFID interrogation source for interrogating and obtaining information from the RFID element associated with a passport; and an antenna to transmit signals between an RFID element and the RFID interrogation source.