Patents by Inventor Marc Behl
Marc Behl 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: 10040880Abstract: The present invention relates to an article consisting of or comprising a bidirectional shape-memory polymer (bSMP), the bSMP comprising: first phase-segregated domains (AD) having a first transition temperature (Tt,AD) corresponding to a crystallization transition or glass transition of the first domains (AD), second phase-segregated domains (SD) having a second transition temperature (Tt,AD) corresponding to a crystallization transition or glass transition of the second domains (SD), the second transition temperature (Tt,SD) being higher than the first transition temperature (Tt,AD), and covalent or physical bonds cross-linking the polymer chains of the bSMP, and in this way interconnecting the first and second domains (AD, SD), wherein the second phase-separated domains (SD) form a skeleton which is at least partially embedded in the first phase-segregated domains (AD), and wherein polymer chain segments of the bSMP forming the first domains (AD) are substantially orientated in a common direction, such thaType: GrantFiled: December 20, 2013Date of Patent: August 7, 2018Assignee: Helmholtz-Zentrum Geesthacht Zentrum fuer Material -und Kuestenforschung GmbHInventors: Marc Behl, Karl Kratz, Ulrich Noechel, Tilman Sauter, Joerg Zotzmann, Srinivasa Reddy Chaganti, Andreas Lendlein
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Patent number: 9919470Abstract: The present invention is directed to a method of preparing an actuator capable of being repeatedly and reversibly shifted between two freestanding shapes (A, B) under stress-free conditions upon varying a temperature between a temperature Tlow and a temperature Tsep.Type: GrantFiled: June 17, 2014Date of Patent: March 20, 2018Assignee: HELMHOLTZ-ZENTRUM GEESTHACHT ZENTRUM FUER MATERIAL- UND KUESTENFORSCHUNG GMBHInventors: Marc Behl, Karl Kratz, Srinivasa Reddy Chaganti, Ulrich Noechel, Tilman Sauter, Andreas Lendlein
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Patent number: 9475269Abstract: The invention relates to a polymer network with triple-shape-memory effect and an associated programming method. The invention also relates to a method for producing layer systems made of shape-memory materials comprising the polymer network. The polymer network includes A) a first crystalline switching segment made of a star polymer; and B) a second crystalline switching segment made of a linear polymer or a star polymer.Type: GrantFiled: October 31, 2014Date of Patent: October 25, 2016Assignee: Helmholtz-Zentrum Geesthacht Zentrum Fur Material Und Kustenforschung GmbHInventors: Marc Behl, Andreas Lendlein, Yakai Feng, Jorg Zotzmann
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Publication number: 20160136876Abstract: The present invention is directed to a method of preparing an actuator capable of being repeatedly and reversibly shifted between two freestanding shapes (A, B) under stress-free conditions upon varying a temperature between a temperature Tlow and a temperature Tsep.Type: ApplicationFiled: June 17, 2014Publication date: May 19, 2016Inventors: Andreas LENDLEIN, Marc BEHL, Karl KRATZ, Srinivasa Reddy CHAGANTI, Ulrich NOECHEL, Tilman SAUTER
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Patent number: 9272464Abstract: The invention relates to an article (10) made of a shape memory composite material (12) comprising a shape memory polymer (14) and a magnetic material (16) embedded therein, said shape memory polymer (14) after thermomechanical programming being capable of undergoing at least one temperature-induced transition from a temporary shape into a permanent shape, as well as to a method for the production thereof and a method for retrieving stored shapes. It is envisaged that the article (10) has at least two directly or indirectly interconnected sections (18, 20) which differ by a different surface-to-volume ratio (S/V).Type: GrantFiled: December 16, 2008Date of Patent: March 1, 2016Assignee: Helmholtz-Zentrum Geesthacht Zentrum Fuer Material-Und Kuestenforschung GMBHInventors: Karl Kratz, Andreas Lendlein, Reinhard Mohr, Marc Behl
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Publication number: 20150344600Abstract: The present invention relates to an article consisting of or comprising a bidirectional shape-memory polymer (bSMP), the bSMP comprising: first phase-segregated domains (AD) having a first transition temperature (Tt,AD) corresponding to a crystallization transition or glass transition of the first domains (AD), second phase-segregated domains (SD) having a second transition temperature (Tt,AD) corresponding to a crystallization transition or glass transition of the second domains (SD), the second transition temperature (Tt,SD) being higher than the first transition temperature (Tt,AD), and covalent or physical bonds cross-linking the polymer chains of the bSMP, and in this way interconnecting the first and second domains (AD, SD), wherein the second phase-separated domains (SD) form a skeleton which is at least partially embedded in the first phase-segregated domains (AD), and wherein polymer chain segments of the bSMP forming the first domains (AD) are substantially orientated in a common direction, such thaType: ApplicationFiled: December 20, 2013Publication date: December 3, 2015Applicant: Helmholtz-Zentrum Geesthacht Zentrum fuer Material -und Kuestenforschung GmbHInventors: Marc Behl, Karl Kratz, Ulrich Noechel, Tilman Sauter, Joerg Zotzmann, Srinivasa Reddy Chaganti, Andreas Lendlein
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Publication number: 20150053344Abstract: The invention relates to a polymer network with triple-shape-memory effect and an associated programming method. The invention also relates to a method for producing layer systems made of shape-memory materials comprising the polymer network. The polymer network includes A) a first crystalline switching segment made of a star polymer; and B) a second crystalline switching segment made of a linear polymer or a star polymer.Type: ApplicationFiled: October 31, 2014Publication date: February 26, 2015Applicant: Helmholz-Zentrum Geesthacht Zentrum fur Material und Kustenforschung GmbHInventors: Marc BEHL, Andreas Lendlein, Yakai Feng, Jorg Zotzmann
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Patent number: 8901253Abstract: The invention relates to a polymer network with triple-shape-memory effect and an associated programming method. The invention also relates to a method for producing layer systems made of shape-memory materials comprising the polymer network. The polymer network includes A) a first crystalline switching segment made of a star polymer; and B) a second crystalline switching segment made of a linear polymer or a star polymer.Type: GrantFiled: October 29, 2009Date of Patent: December 2, 2014Assignee: Helmholtz-Zentrum Geesthacht Zentrum fur Material und Kustenforschung GmbHInventors: Marc Behl, Andreas Lendlein, Yakai Feng, Jorg Zotzmann
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Patent number: 8697835Abstract: A method for restoring a programmed article which contains a shape memory composite material of at least one shape memory polymer network with thermally inducible triple shape properties, the method comprising subjecting the article to a magnetic alternating field and simultaneously to an external heat supply in order to trigger the restoration, wherein at least one of the parameters of magnetic field strength (H) and ambient temperature (TUmg) is increased continuously or discontinuously in such a way that the article first experiences a transition in shape from the first temporary shape (TF1) into the second temporary shape (TF2) and subsequently from the second temporary shape (TF2) into the permanent shape (PF).Type: GrantFiled: April 22, 2011Date of Patent: April 15, 2014Assignee: Helmholtz-Zentrum Geesthacht Zentrum für Material—und Küstenforschung GmbHInventors: Andreas Lendlein, Narendra Kumar Uttamchand, Karl Kratz, Marc Behl
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Publication number: 20110258826Abstract: The invention relates to a method for restoring a programmed article which contains, at least over portions, a shape memory composite material, said composite material comprising (i) at least one shape memory polymer network with thermally inducible triple shape properties which comprises at least one first phase-separated switching segment with a first transition temperature (Ttrans,1) and a second phase-separated switching segment with a second transition temperature (Ttrans,2, where Ttrans,1<Ttrans,2) and at least one type of covalent and/or non-covalent netpoints, and ii) a magnetic material embedded in the shape memory polymer, wherein, after a thermo-mechanical programming process, the article being present in a first temporary shape (TF1) and having stored a second temporary shape (TF2) and a permanent shape (PF).Type: ApplicationFiled: April 22, 2011Publication date: October 27, 2011Applicant: Helmholtz-Zentrum Geesthacht Zentrum fuer Material- und Kuestenforschung GmbHInventors: Andreas Lendlein, Narendra Kumar Uttamchand, Karl Kratz, Marc Behl
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Publication number: 20110259517Abstract: The invention relates to a polymer network with triple-shape-memory effect and an associated programming method. The invention also relates to a method for producing layer systems made of shape-memory materials comprising the polymer network. The polymer network includes A) a first crystalline switching segment made of a star polymer; and B) a second crystalline switching segment made of a linear polymer or a star polymer.Type: ApplicationFiled: October 29, 2009Publication date: October 27, 2011Applicant: HELMHOLTZ-ZENTRUM GEESTHACHI ZENTRUM FUR MATERIAL-UND KUSTENFORSCHUNG GMBHInventors: Marc Behl, Andreas Lendlein, Yakai Feng, Jorg Zotzmann
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Publication number: 20110008596Abstract: The invention relates to an article (10) made of a shape memory composite material (12) comprising a shape memory polymer (14) and a magnetic material (16) embedded therein, said shape memory polymer (14) after thermomechanical programming being capable of undergoing at least one temperature-induced transition from a temporary shape into a permanent shape, as well as to a method for the production thereof and a method for retrieving stored shapes. It is envisaged that the article (10) has at least two directly or indirectly interconnected sections (18, 20) which differ by a different surface-to-volume ratio (S/V).Type: ApplicationFiled: December 16, 2008Publication date: January 13, 2011Applicant: GKSS-Forschungszentrum Geethacht GMBHInventors: Karl Kratz, Andreas Lendlein, Reinhard Mohr, Marc Behl