Patents by Inventor Ottmar Roth

Ottmar Roth 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).

  • Publication number: 20210280346
    Abstract: A semi-hard magnetic alloy for activation strips in magnetic anti-theft systems is provided. The alloy consists essentially of 5 to 15 wt % Ni, 0.5 to 8 wt % Mn, 0.2 to 4 wt % Cu, 0 to 2 wt % Ai, 0 to 2 wt % Ti, the remainder iron and up to 1 wt % impurities, where 0.5 wt %<(Cu+Al+Ti)<5 wt %.
    Type: Application
    Filed: November 15, 2017
    Publication date: September 9, 2021
    Inventors: Ottmar ROTH, Alberto BRACCHI
  • Patent number: 8778100
    Abstract: The invention relates to a magnetic strip, wherein the strip has a magnetic easy axis which is axially parallel to a transverse axis of the strip. The strip is cut to length, from strip material made of a semi-hard magnetic crystalline alloy, along a transverse axis of the strip material substantially corresponding to a length (l) of the strip. The strip material has a magnetic easy axis which runs axially parallel to the transverse axis of the strip material.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: July 15, 2014
    Assignee: Vacuumschmelze GmbH & Co. KG
    Inventor: Ottmar Roth
  • Patent number: 8518194
    Abstract: A magnetic article comprises, in total, elements in amounts capable of providing at least one (La1-aMa)(Fe1-b-cTbYc)13-dXe phase and less than 0.5 Vol % impurities, wherein 0?a?0.9, 0?b?0.2, 0.05?c?0.2, ?1?d?+1, 0?e?3, M is one or more of the elements Ce, Pr and Nd, T is one or more of the elements Co, Ni, Mn and Cr, Y is one or more of the elements Si, Al, As, Ga, Ge, Sn and Sb and X is one or more of the elements H, B, C, N, Li and Be. The magnetic article comprises a permanent magnet.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: August 27, 2013
    Assignee: Vacuumschmelze GmbH & Co. KG
    Inventors: Matthias Katter, Joachim Gerster, Ottmar Roth
  • Patent number: 8013743
    Abstract: Disclosed are markers for a magnetic theft protection system, which markers contain at least one oblong alarm strip made of an amorphous ferromagnetic alloy and at least one activation strip made of a molybdenum-free semi-hard magnetic alloy consisting essentially of NiaMbFeRest, wherein M is one or more of the elements from the group including Cr, W and V, and wherein a and b are weight percentages such that 15% by weight?a?25% by weight, and 2% by weight?b?8% by weight. The activation strip has a coercive force Hc of 10 A/cm to 25 A/cm and a remanence Br of at least 0.9 T.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: September 6, 2011
    Assignee: Vacuumschmelze GmbH & Co. KG
    Inventors: Ottmar Roth, Hartwin Weber
  • Patent number: 7942981
    Abstract: A seamless, rotationally symmetrical hollow blank formed by a non-cutting operation from a deformable permanently magnetic alloy is provided, said alloy consisting essentially of 5.0 to 20.0 percent by weight cobalt, 20.0 to 35.0 percent by weight chromium, for the remainder iron and impurities caused by melting and/or by chance. The seamless hollow body is suitable in particular for use in hysteresis clutches, hysteresis brakes, and position measuring devices. Furthermore, non-cutting shaping processes for producing the seamless rotationally symmetrical hollow body are provided, with roller spinning being preferred.
    Type: Grant
    Filed: September 19, 2007
    Date of Patent: May 17, 2011
    Assignee: Vacuumschmelze GmbH & Co. KG
    Inventors: Ottmar Roth, Hartwin Weber, Lutz Hinrich, Jens Diehl
  • Publication number: 20110074529
    Abstract: The invention relates to a magnetic strip, the strip having a magnetically easy direction axially parallel to a transverse axis of the strip. The strip is cut to length from a band of a magnetically semi-hard, crystalline alloy along a transverse axis of the band essentially corresponding to a width (b) of the strip. The band has a magnetically easy direction axially parallel to a longitudinal axis of the band.
    Type: Application
    Filed: September 30, 2010
    Publication date: March 31, 2011
    Applicant: Vacuumschmelze GmbH & Co., KG
    Inventor: Ottmar Roth
  • Publication number: 20110076508
    Abstract: The invention relates to a magnetic strip, wherein the strip has a magnetic easy axis which is axially parallel to a transverse axis of the strip. The strip is cut to length, from strip material made of a semi-hard magnetic crystalline alloy, along a transverse axis of the strip material substantially corresponding to a length (l) of the strip. The strip material has a magnetic easy axis which runs axially parallel to the transverse axis of the strip material.
    Type: Application
    Filed: September 30, 2010
    Publication date: March 31, 2011
    Applicant: Vacuumschmelze GmbH & Co., KG
    Inventor: Ottmar Roth
  • Publication number: 20110001594
    Abstract: A magnetic article comprises, in total, elements in amounts capable of providing at least one (La1-aMa) (Fe1-b-cTbYc)13-dXe phase and less than 0.5 Vol % impurities, wherein 0?a?0.9, 0?b?0.2, 0.05?c?0.2, ?1?d?+1, 0?e?3, M is one or more of the elements Ce, Pr and Nd, T is one or more of the elements Co, Ni, Mn and Cr, Y is one or more of the elements Si, Al, As, Ga, Ge, Sn and Sb and X is one or more of the elements H, B, C, N, Li and Be. The magnetic article comprises a permanent magnet.
    Type: Application
    Filed: September 30, 2009
    Publication date: January 6, 2011
    Applicant: Vacuumschmelze GmbH & Co. KG
    Inventors: Matthias Katter, Joachim Gerster, Ottmar Roth
  • Patent number: 7432815
    Abstract: Disclosed are a marker for a magnetic theft protection system, comprising: (a) at least one oblong alarm strip comprising an amorphous ferromagnetic alloy; and (b) at least one oblong activation strip comprising an alloy consisting essentially of formula NiaMobXcFeRest, wherein X is one or more of the elements from the group including Cr, W and V, and wherein a, b, and c are weight percentages, such that 15% by weight?a?25% by weight, 0% by weight?b?2.8% by weight, 0% by weight?c?8% by weight; and, wherein said activation strip has a coercitive force Hc of 10 A/cm to 25 A/cm and a remanence Br of at least 1.0 T; the activation strip itself, a tag containing the activation strip and/or marker, articles containing the marker or tag, methods for making the activation strip, and methods for making the marker.
    Type: Grant
    Filed: October 1, 2007
    Date of Patent: October 7, 2008
    Assignee: VACUUMSCHMELZE GmbH & Co. KG
    Inventors: Ottmar Roth, Hartwin Weber
  • Publication number: 20080160335
    Abstract: A seamless, rotationally symmetrical hollow blank formed by a non-cutting operation from a deformable permanently magnetic alloy is provided, said alloy consisting essentially of 5.0 to 20.0 percent by weight cobalt, 20.0 to 35.0 percent by weight chromium, for the remainder iron and impurities caused by melting and/or by chance. The seamless hollow body is suitable in particular for use in hysteresis clutches, hysteresis brakes, and position measuring devices. Furthermore, non-cutting shaping processes for producing the seamless rotationally symmetrical hollow body are provided, with roller spinning being preferred.
    Type: Application
    Filed: September 19, 2007
    Publication date: July 3, 2008
    Inventors: Ottmar Roth, Hartwin Weber, Lutz Hinrich, Jens Diehl
  • Publication number: 20080088451
    Abstract: Disclosed are markers for a magnetic theft protection system, which markers contain at least one oblong alarm strip made of an amorphous ferromagnetic alloy and at least one activation strip made of a molybdenum-free semi-hard magnetic alloy consisting essentially of NiaMbFeRest, wherein M is one or more of the elements from the group including Cr, W and V, and wherein a and b are weight percentages such that 15% by weight?a?25% by weight, and 2% by weight?b?8% by weight. The activation strip has a coercive force Hc of 10 A/cm to 25 A/cm and a remanence Br of at least 0.
    Type: Application
    Filed: September 7, 2007
    Publication date: April 17, 2008
    Applicant: Vacuumschmelze GmbH & Co. KG
    Inventors: Ottmar Roth, Hartwin Weber
  • Publication number: 20080084308
    Abstract: Disclosed are a marker for a magnetic theft protection system, comprising: (a) at least one oblong alarm strip comprising an amorphous ferromagnetic alloy; and (b) at least one oblong activation strip comprising an alloy consisting essentially of formula NiaMobXcFeRest, wherein X is one or more of the elements from the group including Cr, W and V, and wherein a, b, and c are weight percentages, such that 15% by weight?a?25% by weight, 0% by weight?b?2.8% by weight, 0% by weight?c?8% by weight; and, wherein said activation strip has a coercitive force Hc of 10 A/cm to 25 A/cm and a remanence Br of at least 1.0 T; the activation strip itself, a tag containing the activation strip and/or marker, articles containing the marker or tag, methods for making the activation strip, and methods for making the marker.
    Type: Application
    Filed: October 1, 2007
    Publication date: April 10, 2008
    Applicant: Vacuumschmelze GmbH & Co. KG
    Inventors: Ottmar Roth, Hartwin Weber
  • Publication number: 20050051239
    Abstract: A seamless, rotationally symmetrical hollow blank formed by a non-cutting operation from a deformable permanently magnetic alloy is provided, said alloy consisting essentially of 5.0 to 20.0 percent by weight cobalt, 20.0 to 35.0 percent by weight chromium, for the remainder iron and impurities caused by melting and/or by chance. The seamless hollow body is suitable in particular for use in hysteresis clutches, hysteresis brakes, and position measuring devices. Furthermore, non-cutting shaping processes for producing the seamless rotationally symmetrical hollow body are provided, with roller spinning being preferred.
    Type: Application
    Filed: May 27, 2004
    Publication date: March 10, 2005
    Inventors: Ottmar Roth, Hartwin Weber, Lutz Hinrich, Jens Diehl
  • Patent number: 6803118
    Abstract: A semi-hard magnetic alloy for activation strips in magnetic anti-theft security systems is disclosed that contains 8 to 25 weight % Ni, 1.0 to 4.5 weight % Al, 0.5 to 3 weight % Ti and the balance iron.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: October 12, 2004
    Assignee: Vacuumschmelze GmbH
    Inventors: Hartwin Weber, Gernot Hausch, Ottmar Roth
  • Publication number: 20040066297
    Abstract: A semi-hard magnetic alloy for activation strips in magnetic anti-theft security systems is disclosed that contains 8 to 25 weight % Ni, 1.0 to 4.5 weight % Al, 0.5 to 3 weight % Ti and the balance iron.
    Type: Application
    Filed: September 26, 2003
    Publication date: April 8, 2004
    Applicant: Vacuumschmelze GmbH
    Inventors: Hartwin Weber, Gernot Hausch, Ottmar Roth
  • Patent number: 6689490
    Abstract: Display Element for Employment in a Magnetic Anti-theft Security System A semi-hard magnetic alloy for activation strips in magnetic anti-theft security systems is disclosed that contains 8 to 25 weight % Ni, 1.5 to 4.5 weight % Al, 0.5 to 3 weight % Ti and balance iron. The alloy is distinguished over known, employed alloys by excellent magnetic properties and a high resistance to corrosion. Further, the inventive alloy can be excellently cold-worked before the annealing.
    Type: Grant
    Filed: February 21, 2003
    Date of Patent: February 10, 2004
    Assignee: Vacuumschmelze GmbH
    Inventors: Hartwin Weber, Gernot Hausch, Ottmar Roth
  • Patent number: 6663981
    Abstract: A marker for use in a magnetic anti-theft security system has an amorphous ferromagnetic alloy alarm strip and at least one activation strip. The semi-hard magnetic alloy for the activation strip contains 8 to 25 weight % Ni, 1.5 to 4.5 weight % Al, 0.5 to 3 weight % Ti and balance of iron. The alloy is distinguished over known, employed alloys by excellent magnetic properties and a high resistance to corrosion. Further, the alloy can be excellently cold-worked before the annealing.
    Type: Grant
    Filed: June 8, 1999
    Date of Patent: December 16, 2003
    Assignee: Vacuumschmelze GmbH
    Inventors: Hartwin Weber, Gernot Hausch, Ottmar Roth
  • Publication number: 20030129445
    Abstract: A semi-hard magnetic alloy for activation strips in magnetic anti-theft security systems is disclosed that contains 8 to 25 weight % Ni, 1.5 to 4.5 weight % Al, 0.5 to 3 weight % Ti and balance iron.
    Type: Application
    Filed: February 21, 2003
    Publication date: July 10, 2003
    Inventors: Hartwin Weber, Gernot Hausch, Ottmar Roth
  • Patent number: 6166636
    Abstract: A marker for employment in a magnetic anti-theft security system is composed of an oblong alarm strip of an amorphous ferromagnetic alloy and at least one activation strip applied onto the alarm strip and composed of a semi-hard magnetic alloy. One or more spatially separated regions that are composed of a non-magnetic phase are introduced into the activation strip with a thermal treatment. The semi-hard magnetic alloy has a coercive force H.sub.c of 15 through 100 A/cm and a remanence B.sub.r of at least 0.8 T.
    Type: Grant
    Filed: May 17, 1999
    Date of Patent: December 26, 2000
    Assignee: Vacuumschmelze GmbH
    Inventors: Matthias Herget, Ottmar Roth
  • Patent number: 6157301
    Abstract: A semihard magnetic alloy for activation strips in magnetic antitheft systems contains 0.1 to 10% by weight Ni, 0.1 to 15% by weight Cr, 0.1 to 15% by weight Mo and Fe making up the rest with an overall proportion of Fe, Ni and Mo of less than 95% by weight of the alloy. The alloy is distinguished with respect to known alloys in use by its excellent magnetic properties and high resistance to corrosion. Furthermore, the alloy can be excellently cold shaped before tempering.
    Type: Grant
    Filed: June 11, 1999
    Date of Patent: December 5, 2000
    Assignee: Vacuumschmelze GmbH
    Inventors: Christian Radeloff, Gernot Hausch, Ottmar Roth