Patents by Inventor Chester Piotrowski
Chester Piotrowski 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).
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Patent number: 6646554Abstract: A combination tag is disclosed, including a magnetically-responsive element and a radio frequency-responsive element. In one embodiment, the magnetically-responsive element also functions as an antenna for the radio frequency-responsive element.Type: GrantFiled: August 14, 2000Date of Patent: November 11, 2003Assignee: 3M Innovative Properties CompanyInventors: Edward D. Goff, Gerald L. Karel, Chester Piotrowski, Robert A. Sainati, Ching-Long Tsai
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Publication number: 20030206107Abstract: Antenna shelf tape is disclosed for use with items having radio frequency identification elements or tags associated with items of interest.Type: ApplicationFiled: May 8, 2003Publication date: November 6, 2003Applicant: 3M Innovative Properties CompanyInventors: Edward D. Goff, Bernard A. Gonzalez, Chester Piotrowski, Ching-Long Tsai
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Patent number: 6600420Abstract: Antenna shelf tape is disclosed for use with items having radio frequency identification elements or tags associated with items of interest.Type: GrantFiled: July 19, 2001Date of Patent: July 29, 2003Assignee: 3M Innovative Properties CompanyInventors: Edward D. Goff, Bernard A. Gonzalez, Chester Piotrowski, Ching-Long Tsai
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Publication number: 20020196126Abstract: Various systems and methods of handling items such as files are disclosed, including systems and methods for polling RFID-tagged items while they are stored in storage areas.Type: ApplicationFiled: May 20, 2002Publication date: December 26, 2002Applicant: 3M Innovative Properties CompanyInventors: Peter M. Eisenberg, David P. Erickson, Edward D. Goff, Mitchell B. Grunes, Gene J. Hickok, Janet T. Keller, William J. Kelliher, Jon A. Kirschhoffer, John M. Kruse, Diane E. Morel, Scott D. Pearson, Chester Piotrowski, Edmund J. Ring, Robert A. Sainati, Michele A. Waldner
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Patent number: 6486780Abstract: The present invention relates to RFID devices, including handheld RFID devices, and applications for such devices. The devices and applications may be used in connection with items that are associated with an RFID tag, and optionally a magnetic security element. The devices and applications are described with particular reference to library materials such as books, periodicals, and magnetic and optical media.Type: GrantFiled: July 19, 2000Date of Patent: November 26, 2002Assignee: 3M Innovative Properties CompanyInventors: Sharon R. Garber, Bernard A. Gonzalez, Mitchell B. Grunes, Richard H. Jackson, Gerald L. Karel, John M. Kruse, Richard W. Lindahl, James E. Nash, Chester Piotrowski, John D. Yorkovich
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Publication number: 20020167406Abstract: The present invention relates to RFID devices, including handheld RFID devices, and applications for such devices. The devices and applications may be used in connection with items that are associated with an RFID tag, and optionally a magnetic security element. The devices and applications are described with particular reference to library materials such as books, periodicals, and magnetic and optical media.Type: ApplicationFiled: May 20, 2002Publication date: November 14, 2002Applicant: 3M Innovative Properties CompanyInventors: Sharon R. Garber, Bernard A. Gonzalez, Mitchell B. Grunes, Richard H. Jackson, Gerald L. Karel, John M. Kruse, Richard W. Lindahl, James E. Nash, Chester Piotrowski, John D. Yorkovich
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Patent number: 6448886Abstract: The present invention relates to RFID devices, including handheld RFID devices, and applications for such devices. The devices and applications may be used in connection with items that are associated with an RFID tag, and optionally a magnetic security element. The devices and applications are described with particular reference to library materials such as books, periodicals, and magnetic and optical media.Type: GrantFiled: March 13, 2001Date of Patent: September 10, 2002Assignee: 3M Innovative Properties CompanyInventors: Sharon R. Garber, Bernard A. Gonzalez, Mitchell B. Grunes, Richard H. Jackson, Gerald L. Karel, John M. Kruse, Richard W. Lindahl, James E. Nash, Chester Piotrowski, John D. Yorkovich
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Patent number: 6424262Abstract: The present invention relates to RFID devices, including handheld RFID devices, and applications for such devices. The devices and applications may be used in connection with items that are associated with an RFID tag, and optionally a magnetic security element. The devices and applications are described with particular reference to library materials such as books, periodicals, and magnetic and optical media.Type: GrantFiled: March 13, 2001Date of Patent: July 23, 2002Assignee: 3M Innovative Properties CompanyInventors: Sharon R. Garber, Bernard A. Gonzalez, Mitchell B. Grunes, Richard H. Jackson, Gerald L. Karel, John M. Kruse, Richard W. Lindahl, James E. Nash, Chester Piotrowski, John D. Yorkovich
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Publication number: 20020011967Abstract: Antenna shelf tape is disclosed for use with items having radio frequency identification elements or tags associated with items of interest.Type: ApplicationFiled: July 19, 2001Publication date: January 31, 2002Applicant: 3M Innovative Properties CompanyInventors: Edward D. Goff, Bernard A. Gonzalez, Chester Piotrowski, Ching-Long Tsai
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Publication number: 20020008623Abstract: The present invention relates to RFID devices, including handheld RFID devices, and applications for such devices. The devices and applications may be used in connection with items that are associated with an RFID tag, and optionally a magnetic security element. The devices and applications are described with particular reference to library materials such as books, periodicals, and magnetic and optical media.Type: ApplicationFiled: March 13, 2001Publication date: January 24, 2002Applicant: 3M Innovative Properties CompanyInventors: Sharon R. Garber, Bernard A. Gonzalez, Mitchell B. Grunes, Richard H. Jackson, Gerald L. Karel, John M. Kruse, Richard W. Lindahl, James E. Nash, Chester Piotrowski, John D. Yorkovich
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Patent number: 6335686Abstract: Antenna shelf tape is disclosed for use with items having radio frequency identification elements or tags associated with items of interest.Type: GrantFiled: August 5, 1999Date of Patent: January 1, 2002Assignee: 3M Innovative Properties CompanyInventors: Edward D. Goff, Bernard A. Gonzalez, Chester Piotrowski, Ching-Long Tsai
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Publication number: 20010013830Abstract: The present invention relates to RFID devices, including handheld RFID devices, and applications for such devices. The devices and applications may be used in connection with items that are associated with an RFID tag, and optionally a magnetic security element. The devices and applications are described with particular reference to library materials such as books, periodicals, and magnetic and optical media.Type: ApplicationFiled: March 13, 2001Publication date: August 16, 2001Applicant: 3M Innovative Properties CompanyInventors: Sharon R. Garber, Bernard A. Gonzalez, Mitchell B. Grunes, Richard H. Jackson, Gerald L. Karel, John M. Kruse, Richard W. Lindahl, James E. Nash, Chester Piotrowski, John D. Yorkovich
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Patent number: 6232870Abstract: The present invention relates to RFID devices, including handheld RFID devices, and applications for such devices. The devices and applications may be used in connection with items that are associated with an RFID tag, and optionally a magnetic security element. The devices and applications are described with particular reference to library materials such as books, periodicals, and magnetic and optical media.Type: GrantFiled: August 5, 1999Date of Patent: May 15, 2001Assignee: 3M Innovative Properties CompanyInventors: Sharon R. Garber, Bernard A. Gonzalez, Mitchell B. Grunes, Richard H. Jackson, Gerald L. Karel, John M. Kruse, Richard W. Lindahl, James E. Nash, Chester Piotrowski, John D. Yorkovich
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Patent number: 6154137Abstract: A combination tag is disclosed, including a magnetically-responsive element and a radio frequency-responsive element. In one embodiment, the magnetically-responsive element also functions as an antenna for the radio frequency-responsive element.Type: GrantFiled: June 8, 1998Date of Patent: November 28, 2000Assignee: 3M Innovative Properties CompanyInventors: Edward D. Goff, Gerald L. Karel, Chester Piotrowski, Robert A. Sainati, Ching-Long Tsai
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Patent number: 6097291Abstract: An Electronic Article Surveillance (EAS) marker is adapted for direct application to optically recorded media such as compact disks, CD-ROM's, laser disks, digital video disks, and the like. The marker includes a support sheet and one or more marker elements which are positioned such that the mass distribution of the marker is symmetrically disposed about the center of the marker. This ensures that when the marker is properly positioned on the optically recorded media, the marker does not adversely affect the mechanical balance of the media.Type: GrantFiled: May 25, 1999Date of Patent: August 1, 2000Assignee: 3M Innovative Properties CompanyInventors: Ching-Long Tsai, Chester Piotrowski, Rita M. Lunderville, Norman L. Koning, John G. Fitzgerald
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Patent number: 5939985Abstract: An Electronic Article Surveillance (EAS) marker is adapted for direct application to optically recorded media such as compact disks, CD-ROM's, laser disks, digital video disks, and the like. The marker includes a support sheet and one or more marker elements which are positioned such that the mass distribution of the marker is symmetrically disposed about the center of the marker. This ensures that when the marker is properly positioned on the optically recorded media, the marker does not adversely affect the mechanical balance of the media.Type: GrantFiled: September 11, 1998Date of Patent: August 17, 1999Assignee: Innovative Properties CompanyInventors: Ching-Long Tsai, Chester Piotrowski, Rita M. Lunderville, Norman L. Koning, John G. Fitzgerald
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Patent number: 5825292Abstract: An Electronic Article Surveillance (EAS) marker is adapted for direct application to optically recorded media such as compact disks, CD-ROM's, laser disks, digital video disks, and the like. The marker includes a support sheet and one or more marker elements which are positioned such that the mass distribution of the marker is symmetrically disposed about the center of the marker. This ensures that when the marker is properly positioned on the optically recorded media, the marker does not adversely affect the mechanical balance of the media.Type: GrantFiled: July 3, 1997Date of Patent: October 20, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: Ching-Long Tsai, Norman L. Koning, John G. Fitzgerald, Chester Piotrowski, Rita M. Lunderville
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Patent number: 5699047Abstract: An Electronic Article Surveillance (EAS) marker is adapted for direct application to optically recorded media such as compact disks, CD-ROM's, laser disks, digital video disks, and the like. The marker includes a support sheet and one or more marker elements which are positioned such that the mass distribution of the marker is symmetrically disposed about the center of the marker. This ensures that when the marker is properly positioned on the optically recorded media, the marker does not adversely affect the mechanical balance of the media.Type: GrantFiled: January 19, 1996Date of Patent: December 16, 1997Assignee: Minnesota Mining and Manufacturing Co.Inventors: Ching-Long Tsai, Chester Piotrowski, Rita M. Lunderville, Norman L. Koning, John G. Fitzgerald
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Patent number: 5405702Abstract: A method for manufacturing a nonlinear, dual-axis thin-film magnetic device which can be used as an electronic article surveillance system marker. The method includes providing a substrate having a surface characterized by first and second generally perpendicular axes. A magnetic field oriented parallel to the first axis is applied on the surface of the substrate. A first stack of relatively thin thin-film magnetic layers separated by nonmagnetic thin-film layers is grown on the substrate. The relatively thin thin-tim layers are grown in the presence of the magnetic field to a thickness sufficiently thick that the layers exhibit magnetic properties that are substantially independent of surface effects, but sufficiently thin that the easy axis of magnetization is oriented parallel to the second axis. A second stack of relatively thick thin-film magnetic layers separated by nonmagnetic thin-film layers is grown on the first stack.Type: GrantFiled: December 30, 1993Date of Patent: April 11, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: Chester Piotrowski, Timothy M. Fell
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Patent number: 5083112Abstract: A marker for use in magnetic-type electronic article surveillance systems, comprising a substrate on which are deposited a plurality of high permeability, low coercive force magnetic thin-films, each being separated from an adjacent magnetic thin-film by a non-magnetic thin-film. Each of the magnetic films have substantially the same permeability and coercive force, and the non-magnetic films are of a thickness to allow magnetostatic coupling while inhibiting exchange coupling. Accordingly, all of the magnetic thin-films reverse as a single entity and produce a sharp, readily distinguishable response.Type: GrantFiled: June 1, 1990Date of Patent: January 21, 1992Assignee: Minnesota Mining and Manufacturing CompanyInventors: Chester Piotrowski, Charles L. Bruzzone, T050832716g-Long, Jerome W. McAllister