Patents Assigned to BAM Bundesanstalt fur Materialforschung und-prufung
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Patent number: 10259752Abstract: A method of calcination includes providing a raw material including whitlockite Ca9(Mg,Fe2+)[PO3(OH)|(PO4)6], and/or iron phosphate FePO4, and/or aluminum phosphate AlPO4 and/or fluorapatite Ca5(PO4)3F; providing an alkaline-sulfuric compound as an additive; and calcining a mixture of the raw material with the additive to obtain a product, including a citrate soluble phosphate compound.Type: GrantFiled: June 11, 2015Date of Patent: April 16, 2019Assignees: OUTOTEC (FINLAND) OY, BUNDESREPUBLIK DEUTSCHLAND, VERTRETEN DURCH DAS BUNDESMINSITERIUM FÜR WIRTSCHAFT UND ENERGIE, DIESES VERTRETEN DURCH DEN PRÄSIDENTEN DER BAM, BUNDESANSTALT FÜR MATERIALFORSCHUNG UND -PRÜFUNGInventors: Jan Stemann, Christian Adam, Ludwig Hermann
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Patent number: 9589227Abstract: The present invention relates to a method and a corresponding apparatus for identifying a product (1) or information relating to the product (1). In the method, a concealed code on the product (1) is identified, wherein the code is given by a set of ellipsometric parameters, and the method comprises the following steps of: measuring ellipsometric variables for at least one defined point (8) on a surface (9) of the product (1), comparing the measured ellipsometric variables with at least one reference code, and determining a match between the measured ellipsometric variables and the reference code or one of the reference codes or determining a mismatch with each reference code.Type: GrantFiled: December 18, 2008Date of Patent: March 7, 2017Assignee: BAM Bundesanstalt Für Materialforschung Und-PrüfungInventors: Uwe Beck, Andreas Hertwig, Dirk Hönig, Ralph Domnick
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Publication number: 20140227123Abstract: A method for producing a moulded body is proposed, comprising: applying a layer of particles and applying a binder and curing a moulded body; and a device for producing a metallic or ceramic moulded body, having a storage volume, which is configured for receiving a suspension of metallic or ceramic particles that are dispersed in a suspension fluid, a layer-forming application device, which is configured for removing an amount of suspension repeatedly from the storage volume and transferring it into a working volume and applying it there as a layer, a dehumidfying device, which is configured for dehumidifying the applied layer in the working volume, a binder application device, which is configured for applying a binder locally to the dehumidified layer in accordance with a layer model of the moulded body to be produced, in such a way that particles in the dehumidified layer are adhesively bonded locally to one another and optionally in addition to particles of at least one layer lying under the dehumidified lType: ApplicationFiled: June 1, 2012Publication date: August 14, 2014Applicant: BAM Bundesanstalt Fur Materialforschung Und PrufungInventors: Jens Günster, Cynthia Morais Gomes, Georg Berger
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Patent number: 8182832Abstract: The present invention relates to an X-ray amorphous-crystalline material with high solubility which can be used as a bioactive bone replacement material and as a substrate material in biotechnology. The new material comprising crystalline and X-ray amorphous phases is characterized in that according to 31P-NMR measurements, it contains Q0-groups of orthophosphate and Q1-groups of diphosphate, the orthophosphates or Q0-groups making up 70 to 99.9% by weight relative to the total phosphorus content of the finished material and the diphosphates or Q1-groups making up 0.1 to 30% by weight relative to the total phosphorus content of the finished material, and that according to X-ray diffractometric measurements and relative to the total weight of the finished material, 30 to 99.9% by weight of a main crystal phase consisting of Ca2K1?xNa1+x(PO4)2, where x=0.1 to 0.9, is contained in the bone replacement material and 0.Type: GrantFiled: April 15, 2009Date of Patent: May 22, 2012Assignee: Bam Bundesanstalt fur Materialforschung und-PrufungInventors: Georg Berger, Andrea Spitzer, Christian Jäger, Jutta Pauli, Renate Gildenhaar
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Publication number: 20120111122Abstract: A method for determining the plasto-elastic properties of a test sample, which can be affected by the action of pressure, includes pressing a test body against a surface of the test sample with a defined force. Plasto-elastic changes of the surface resulting therefrom are recorded during and/or after the pressure application. A centrifugal force generated by rotating the test body around an axis is utilized as a pressure force which is generated by radially movably guiding the test body, which is disposed between the test sample and the axis, relative to the radially fixed test sample.Type: ApplicationFiled: April 21, 2010Publication date: May 10, 2012Applicant: BAM BUNDESANSTALT FÜR MATERIALFORSCHUNG UND -PRÜFUNGInventor: Uwe Beck
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Publication number: 20100196660Abstract: The invention relates to a method for producing micro-structured shaped parts (22) and the resulting products, wherein a first negative or positive photosensitive layer (12) with a layer thickness (D1) is deposited on a substrate (10) and the first negative or positive photosensitive layer (12) is exposed area-by-area with light of a suitable wavelength; a second negative or positive photosensitive layer (12?) with a layer thickness (D2) is deposited on the first negative or positive photosensitive layer (12) and exposed area-by-area with light of a suitable wavelength, wherein the exposed regions (16?) in the second layer (12?) are identical to and/or different from the exposed regions (16) in the first layer (12); the steps of depositing and exposing the photosensitive layer (12, 12?) area-by-area are performed repeatedly until a predetermined height H is attained, wherein the exposed regions (16, 16?) of the photosensitive layers (12, 12?) represent the positive or negative of the microstructure of the shaType: ApplicationFiled: February 3, 2010Publication date: August 5, 2010Applicant: BAM Bundesanstalt fur Materialforschung und-prufungInventor: MARTIN DRESSLER
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Patent number: 7702180Abstract: Disclosed are an imaging method and an arrangement for the computer-assisted evaluation of projected object trajectories obtained from a computer-tomographic measurement. According to the inventive method, the trajectories are arranged in a previously known sequence into a projection matrix as traces of the respective voluminous elements, and the following steps are iterated until a sufficient reconstruction quality has been attained; (a) at least one of the traces is selected; (b) a reconstructed element that is true to the original position is formed from each of the selected traces so as to be added to a reconstructed image; (c) the selected traces are removed from the projection matrix.Type: GrantFiled: February 12, 2004Date of Patent: April 20, 2010Assignee: Bam Bundesanstalt fur Materialforschung und -PrufungInventors: Axel Lange, Manfred Paul Hentschel
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Patent number: 7587943Abstract: A device for the destruction-free testing of components, in particular of concrete components with ultrasound is suggested, which comprises at least one sensor module with several ultrasonic testing heads functioning as transmitters and/or receivers. The sensor module is provided with a device for producing transmitter impulses for the ultrasonic radiation and with a device for acquiring the readings. Several sensor modules for forming an array are mechanically connected to one another. Furthermore, a control- and evaluation device for activating the sensor modules with their ultrasonic heads and for evaluation of the readings delivered by the sensor modules is provided, which via a bus system is connected with control- and data leads to the sensor modules.Type: GrantFiled: June 19, 2007Date of Patent: September 15, 2009Assignees: BAM Bundesanstalt fur Materialforschung und-prufung, Acoustic Control SystemsInventors: Herbert Wiggenhauser, Andrey A. Samokrutov
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Publication number: 20080110264Abstract: A device for the destruction-free testing of components, in particular of concrete components with ultrasound is suggested, which comprises at least one sensor module with several ultrasonic testing heads functioning as transmitters and/or receivers. The sensor module is provided with a device for producing transmitter impulses for the ultrasonic radiation and with a device for acquiring the readings. Several sensor modules for forming an array are mechanically connected to one another. Furthermore, a control- and evaluation device for activating the sensor modules with their ultrasonic heads and for evaluation of the readings delivered by the sensor modules is provided, which via a bus system is connected with control- and data leads to the sensor modules.Type: ApplicationFiled: June 19, 2007Publication date: May 15, 2008Applicants: BAM Bundesanstalt fur Materialforschung und- prufung, Acoustic Control SystemsInventors: Herbert Wiggenhauser, Andrey A. Samokrutov
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Patent number: 7223420Abstract: The present invention relates to a powder mixture for resorbable calcium phosphate biocements, which mixture consists of 40–99% by volume of powder having a particle size of 0.1–10 ?m, 1–20% by volume of powder having a particle size of 10–43 ?m and 0–59% by volume of powder having a particle size of 43–315 ?m, which powder is obtained by grinding the spontaneously crystallizing melts of a material comprising crystalline and X-ray amorphous phases, which material a) according to 31P-NMR measurements, contains Q0-groups of orthophosphate and Q1-groups of diphosphate, the orthophosphates or Q0-groups making up 65 to 99.9% by weight relative to the total phosphorus content of the powder mixture and the diphosphates or Q1-groups making up 0.1 to 35% by weight relative to the total phosphorus content of the powder mixture, and b) according to X-ray diffractometric measurements and relative to the total weight of the powder mixture, contains 35 to 99.Type: GrantFiled: October 20, 2003Date of Patent: May 29, 2007Assignee: BAM Bundesanstalt für Materialforschung und -prüfungInventors: Georg Berger, Heidi Marx, Christian Jäger, Jutta Pauli
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Patent number: 7148163Abstract: The present invention relates to a glass used as a sintering aid for a resorbable molded body containing calcium phosphate as well as to a method for manufacturing said molded body. According to the invention, the material is ?-tricalcium phosphate and the glass has a chemical composition of 68–78% by weight SiO2, 5–12% by weight MgO and 12–27% by weight Na2O. The aforesaid molded body is manufactured by melting said glass, grinding it until a grain size D50 of 0.7–2 ?m is achieved and mixing it with ?-tricalcium phosphate having a grain size D50 of 1–7.5 ?m, giving the mixture the desired shape and producing the molded body by sintering said mixture at between 1,150 and 1,350° C., wherein the grain size of ?-TCP must not be smaller than that of the glass.Type: GrantFiled: October 20, 2003Date of Patent: December 12, 2006Assignee: BAM Bundesanstalt fur Materialforschung und-prufungInventors: Georg Berger, Renate Gildenhaar, Andrea Spitzer
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Publication number: 20060233459Abstract: Disclosed are an imaging method and an arrangement for the computer-assisted evaluation of projected object trajectories obtained from a computer-tomographic measurement. According to the inventive method, the trajectories are arranged in a previously known sequence into a projection matrix as traces of the respective voluminous elements, and the following steps are iterated until a sufficient reconstruction quality has been attained; (a) at least one of the traces is selected; (b) a reconstructed element that is true to the original position is formed from each of the selected traces so as to be added to a reconstructed image; (c) the selected traces are removed from the projection matrix.Type: ApplicationFiled: February 12, 2004Publication date: October 19, 2006Applicant: BAM Bundesanstalt fur Materialforschung und - prufungInventors: Axel Lange, Manfred Hentschel