Patents Assigned to Helmholtz-Zentrum Geesthacht Zentrum Fuer Material- und Kuestenforschung GmbH
-
Publication number: 20210222831Abstract: A method for manufacturing tanks for storing or containing a fluid under pressure and a method for manufacturing pipes for containing or channeling a fluid under pressure, such as for storing, containing or channeling hydrogen, natural gas or a hydraulic fluid. The method is less complex than known procedures, can be employed in a continuous or semi-continuous manner and allows for a lower thickness of the shell made from the fibres. The method comprising providing a liner having a cylindrical portion with two ends and two dome portions at the respective ends of the cylindrical portions or a liner having a cylindrical portion and one or two open ends; fabricating a tube of fibre filaments by means of the pullwinding method; and wrapping the tube of fibre filaments onto the liner such that at least the cylindrical portion of the liner is enclosed by the tube of fibre filaments.Type: ApplicationFiled: January 15, 2021Publication date: July 22, 2021Applicants: Helmholtz-Zentrum Geesthacht Zentrum für Material-und Küstenforschung GmbH, assemblae, Stühff GmbHInventors: Julián Puszkiel, José M. Bellosta Von Colbe, Anton Nijkamp, Holger Stühff, Julian Jepsen, Martin Dornheim, Thomas Klassen
-
Publication number: 20200361769Abstract: The present invention relates to a method for producing tetrahydridoborate salts with high efficiency at low cost. The method for the production of metal borohydride salts according to the present invention comprises the steps of providing an anhydrous metal borate salt and milling the anhydrous metal borate salt in the presence of a metal material based on magnesium or magnesium alloys in a hydrogen atmosphere at a temperature and for a time sufficient to produce the metal borohydride salt. In another embodiment of the invention, the method for the production of metal borohydride salts according to the present invention comprises the steps of providing an hydrated metal borate salt and milling the hydrated metal borate salt in the presence of a metal material based on magnesium or magnesium alloys in an inert gas atmosphere at a temperature and for a time sufficient to produce the metal borohydride salts.Type: ApplicationFiled: May 8, 2020Publication date: November 19, 2020Applicant: Helmholtz-Zentrum Geesthacht Zentrum für Material-und Küstenforschung GmbHInventors: Claudio Pistidda, Thu Thu Le, Julián Puszkiel, Klaus Horst Taube, Martin Dornheim, Thomas Klassen
-
Patent number: 10835872Abstract: The present invention is directed towards a method for the preparation of macroporous or mesoporous polymer films in hollow fiber geometry. The method according to the present invention reliably produces macroporous or mesoporous homopolymer or copolymer films in hollow fiber geometry having an ordered porous structure. Preferably, the pores are isoporous. The method involves the purging or casting a polyol adjacent to a film forming polymer solution of at least one homopolymer or at least one copolymer in a suitable solvent while polyol diffuses in and then condenses out of the film forming solution before the solution is immersed into a coagulation bath. The methods also require the presence of a carrier solution or carrier substrate during spinning or casting. The method makes macroporous or mesoporous film formation possible with a single step processing method.Type: GrantFiled: April 26, 2018Date of Patent: November 17, 2020Assignee: Helmholtz-Zentrum Geesthacht Zentrum Fuer Material- und Kuestenforschung GmbHInventors: Nazia Noor, Volker Abetz, Joachim Koll
-
ABSORBABLE IMPLANT MATERIAL COMPOSED OF MAGNESIUM OR A MAGNESIUM ALLOY CONTAINING DOPED NANODIAMONDS
Publication number: 20200114048Abstract: An absorbable implant material comprising homogeneously distributed Fe-doped nanodiamonds in a matrix composed of magnesium or a magnesium alloy and a method for the production thereof is provided. The absorbable implant material is produced by a method in which magnesium or a magnesium alloy is melted, Fe-doped nanodiamonds are added to the melt, and the melt composed of magnesium or a magnesium alloy that has been provided with Fe-doped nanodiamonds is subjected to an ultrasound treatment.Type: ApplicationFiled: October 10, 2019Publication date: April 16, 2020Applicant: Helmholtz-Zentrum Geesthacht Zentrum für Material-und Küstenforschung GmbHInventor: Hajo Dieringa -
Patent number: 10615556Abstract: A connector-soldering aid (1) for soldering single and/or cable wires to a connector comprises a connector mount (5) with a first stand (9) and a cable mount (7) with a second stand (31). The connector mount (5) has a base body (17), which is arranged on the first stand (9) and is rotatable relative to the latter about a fixed axis of rotation (19). The connector mount (5) further comprises a replaceable attachment (21) with a connector receiver and a centring device (23) for centring the attachment (21). The centring device (23) is arranged on the base body (17) and is further formed to centre the attachment (21) such that the connector receiver is positioned centrally in relation to the axis of rotation (19) of the base body (17).Type: GrantFiled: June 1, 2017Date of Patent: April 7, 2020Assignee: Helmholtz-Zentrum Geesthacht Zentrum für Material-und Küstenforschung GmbHInventor: Jan Moser
-
Publication number: 20200086275Abstract: The invention relates to membrane modules, in particular membrane pocket modules, which comprise membrane pocket stacks which are disposed in a housing having at least one feed inlet, at least one retentate outlet, and at least one permeate outlet. The invention also relates to the use of the membrane module according to the invention for separating mixtures of liquids and/or gases. The membrane of the previously known type, also referred to as a GS module, comprises a housing which for forming a container interior space by means of finisher discs at two end sides is closed in a pressure-tight manner. The finisher discs comprise at least one feed inlet, at least one retentate outlet, and one permeate outlet, wherein at least one membrane pocket stack which has a plurality of membrane pockets which are lined up beside one another and are mutually separated by seals and which are push-fitted onto a permeate tube is disposed in the container interior space.Type: ApplicationFiled: September 13, 2019Publication date: March 19, 2020Applicant: Helmholtz-Zentrum Geesthacht Zentrum für Material-und Küstenforschung GmbHInventor: Carsten Scholles
-
Patent number: 10590343Abstract: The present invention relates to novel corrosion inhibitor compositions for magnesium or magnesium alloys and to a process for inhibiting the corrosion of such metals using such compositions. The corrosion inhibitor composition for magnesium or magnesium alloys comprises at least one corrosion inhibiting compound which is capable of forming a complex with at least one of Fe(II), Fe(III), Cu(I), Cu(II) and Ni(II) ions, where the complex with at least one of Fe(II), Fe(III), Cu(I), Cu(II) and Ni(II) ions has a stability constant in aqueous solution at room temperature (about 21° C.) log K of greater than or equal to 3.5 wherein the corrosion inhibiting compound is selected from the group of pyridinedicarboxylic acids, and their salts or esters thereof.Type: GrantFiled: July 31, 2017Date of Patent: March 17, 2020Assignee: Helmholtz-Zentrum Geesthacht Zentrum für Material-und Küstenforschung GmbHInventors: Sviatlana Lamaka, Daniel Höche, Mikhail L. Zheludkevich
-
Patent number: 10301431Abstract: A method of producing a thermally rearranged polybenzoxazole, polybenzimidazole or polybenzothiazole (collectively denominated “TR PBX”), thermally arranged PBX and membranes including the same.Type: GrantFiled: December 22, 2016Date of Patent: May 28, 2019Assignee: HELMHOLTZ-ZENTRUM GEESTHACHT ZENTRUM FÜR MATERIAL-UND KÜSTENFORSCHUNG GMBHInventors: Alberto Tena, Sofia Rangou, Sergey Shishatskiy
-
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
-
Publication number: 20180111094Abstract: The present invention relates to a novel membrane module for separating a fluid feed stream into a permeate stream and a retentate stream. The membrane module according to the invention is characterized in that all components are housed in a 20?, 40?, 45? HC, 45? PW or 53? HC container, whereby the membrane module can be transported and handled in a very simple and cost-effective manner despite its comparatively large volume and its high weight. The membrane module is furthermore characterized by its large membrane surface area compared with usually used membrane modules, whereby the number of individual membrane modules required in practical use can be reduced many times over. The present invention furthermore relates to a process for separating a fluid feed stream into a permeate stream and a retentate stream using the membrane module according to the invention.Type: ApplicationFiled: March 4, 2016Publication date: April 26, 2018Applicant: Helmholtz-Zentrum Geesthacht Zentrum Fuer Material - und Kuestenforschung GmbHInventors: Heiko Notzke, Torsten Brinkmann, Thorsten Wolff, Li Zhao, Sebastian Luhr
-
Patent number: 9939350Abstract: A device for exposing sample bodies to a fluid. The sample bodies have an active surface section that defines a measuring plane. The device includes a container, a sample body holder, and an agitating element. The container, which extends along a longitudinal axis, has an inlet, an outlet, a closed side wall, which extends along the longitudinal axis, and first and second end faces that extend transverse to the longitudinal axis. The sample body holder extends transverse to the longitudinal axis and holds at least one sample body so that its measuring plane extends perpendicular to the longitudinal axis in a first sample plane its active surface section faces away from the first end face. The agitating element driven in a rotating manner in a plane perpendicular to the longitudinal axis and is arranged on the side facing away from the first end face of the first sample plane.Type: GrantFiled: June 12, 2015Date of Patent: April 10, 2018Assignee: Helmholtz-Zentrum Geesthacht Zentrum Für Material-und Küstenforschung GmbHInventors: Jördis Petersen, Daniel Pröfrock, Volker Langhans, Andreas Prange
-
Patent number: 9925720Abstract: A method that includes: arranging plastic and further workpieces (1, 3) such that an abutment surface (5) of the plastic workpiece (1) is abutted to a first surface (13) on the further workpiece (3) and a projection (7) on the plastic workpiece (1) extends through a through hole (17) in the further workpiece (3); linearly moving a friction tool (23) parallel to its rotational axis (25) such that a friction surface (31) on the tool (23) contacts a front surface (9) of the projection (7); linearly moving the tool (23) along the rotational axis (25) while rotating the tool (23) so that a pin (29) on the tool (23) penetrates and plasticizes the projection (7) as well as drives a portion of the plasticized projection (7) into an undercut (21) formed in the hole (17) of the further workpiece (3); and retracting the tool (23) from the projection (7).Type: GrantFiled: July 24, 2015Date of Patent: March 27, 2018Assignee: Helmholtz-Zentrum Geesthacht Zentrum für Material - und Küstenforschung GmbHInventors: André Bastos Abibe, Sergio de Traglia Amancio Filho, Marilia Sônego, Jorge Fernandez dos Santos
-
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
-
Patent number: 9895731Abstract: The present invention relates to a process and to an apparatus for producing a magnesium sheet from a magnesium strip in a rolling device, said process having lower material heat losses compared to known processes and requiring a lower expenditure on apparatus. In the process, the magnesium strip, after preheating, is guided through at least one roll nip formed by at least one pair of counter-rotating working rollers, which comprise a main roller body. The process is characterized in that at least one of the two counter-rotating working rollers comprises at least one heat-insulating sheath surrounding the main roller body.Type: GrantFiled: December 3, 2014Date of Patent: February 20, 2018Assignee: Helmholtz-Zentrum Geesthacht Zentrum für Material-und Küstenforschung GmbHInventors: Gerrit Kurz, Dietmar Letzig, Werner Stahl
-
Publication number: 20170166699Abstract: A method of producing a thermally rearranged polybenzoxazole, polybenzimidazole or polybenzothiazole (collectively denominated “TR PBX”), thermally arranged PBX and membranes including the same.Type: ApplicationFiled: December 22, 2016Publication date: June 15, 2017Applicant: Helmholtz-Zentrum Geesthacht Zentrum für Material-und Küstenforschung GmbHInventors: Alberto Tena, Sofia Rangou, Sergey Shishatskiy
-
Patent number: 9457513Abstract: A friction stir welding tool having a drivable pin, which is rotatable around an axis, a shoulder element, a first shoulder and at least one spring. The pin includes a cylindrical engagement section that has a circumferential surface that engages a workpiece. The shoulder element includes a contact surface extending transversely to the axis for engagement with the workpiece. The shoulder element includes a friction block connected in a non-rotatable manner to the pin, on which a first friction surface is formed extending around the axis. The first shoulder part includes a second friction surface connected thereto in a non-rotatable manner, extending around the axis. The first and second friction surfaces face one another. The at least one spring biases the first friction surface against the second friction surface. The contact surface is formed on the first shoulder part.Type: GrantFiled: September 4, 2015Date of Patent: October 4, 2016Assignee: Helmholtz-Zentrum Geesthacht Zentrum für Material-und Küstenforschung GmbHInventors: Leon Leander Hütsch, Jannes Eckart, Jorge Fernandez Dos Santos
-
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
-
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
-
METHOD FOR PRODUCING A THERMORESPONSIVE FILTRATION MEMBRANE AND THERMORESPONSIVE FILTRATION MEMBRANE
Publication number: 20150217237Abstract: The invention relates to a method for producing a thermoresponsive filtration membrane, particularly a microfiltration membrane or ultra-filtration membrane, and a corresponding thermoresponsive filtration membrane. The method according to the invention comprises the following method steps: a) a filtration membrane is wetted or coated with a dopamine solution, b) the dopamine of the dopamine solution is polymerised in order to produce a polydopamine layer, and c) the polydopamine-coated filtration membrane is immersed into a coating solution with an end-functionalised poly(N-isopropylacrylamide), and the poly(N-isopropylacrylamide) is bound to the polydopamine layer.Type: ApplicationFiled: February 6, 2015Publication date: August 6, 2015Applicant: Helmholtz-Zentrum Geesthacht Zentrum für Material- und Küstenforschung GmbHInventors: Volker Abetz, Juliana Clodt, Sofia Rangou, M. Volkan Filiz -
Patent number: 9090520Abstract: A Fischer-Tropsch process for producing hydrocarbons from synthesis gas which originates e.g. from biomass gasification, using membrane separators. In the process, an input stream which comprises hydrogen, carbon monoxide as well as further gases and/or vapours is initially fed to a first membrane stage which comprises a steam-selective and carbon dioxide-selective membrane and through which at least some of the steam present in the input stream and some of the carbon dioxide present in the input stream are separated from the input stream to form a permeate stream of the first membrane stage comprising steam and carbon dioxide and a retentate stream of the first membrane stage containing hydrogen and carbon monoxide.Type: GrantFiled: October 31, 2013Date of Patent: July 28, 2015Assignee: Helmholtz-Zentrum Geesthacht Zentrum für Material-und Küstenforschung GmbHInventor: Torsten Brinkmann