Patents by Inventor Dieter Klemm
Dieter Klemm 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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Publication number: 20240131802Abstract: An extrusion-based additive manufacturing process including the step of selectively depositing a molten thermoplastic material (P) on a film or sheet made from or containing a polymer blend obtained by melt blending a mixture made from or containing: (A) 60% to 98.8% by weight of a polyolefin; (B) 0.1% to 30% by weight of a compatibilizer; (C) 0.05% to 20% by weight of an amino resin; and (D) 0% to 5% by weight of an additive, wherein the amounts of (A), (B), (C) and (D) are based on the total weight of (A)+(B)+(C)+(D).Type: ApplicationFiled: January 26, 2022Publication date: April 25, 2024Applicants: Basell Polyolefine GmbH, Albert-Ludwigs-Universität FreiburgInventors: Carl Gunther Schirmeister, Erik Hans Licht, Karsten Schmitz, Yannic Kessler, Klaus Klemm, Jürgen Rohrmann, Dieter Langenfelder, Mikhail Dureev, Rolf Muelhaupt, Mirco Müller, Steer Peter, Kolano Benjamin
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Patent number: 11857405Abstract: Medical Implant (100), comprising a microbial cellulose tube (1), comprising a wall (2) having an inner surface (3) and an outer surface (4), wherein the wall comprises several layers (5, 6, 7) of microbial cellulose, wherein said layers are concentric or substantially concentric to a longitudinal axis (L) of the tube, a stent (9) which placed inside of the microbial cellulose tube (1), wherein an outer surface (10) of the stent contacts the inner surface (3) of the microbial cellulose tube (1), and method for producing such implant. The implant can be covered with newly created bile duct epithelium, thereby creating a new bile duct from body cells. The implant can be removed after completion of creation of the new bile duct. So, the implant as suitable as a temporary implant. The implant can be used for surgery, such as surgery of gall bladder, bile duct and/or liver, e.g. gall bladder removal, hepatobiliary malignancy surgery or liver transplantation.Type: GrantFiled: November 15, 2021Date of Patent: January 2, 2024Assignee: Universitätsklinikum JenaInventors: Falk Rauchfuss, Utz Settmacher, Dieter Klemm, Wolfgang Fried, Thomas Richter, Katrin Petzold-Welcke, Carola Ruhe
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Publication number: 20220071758Abstract: Medical Implant (100), comprising a microbial cellulose tube (1), comprising a wall (2) having an inner surface (3) and an outer surface (4), wherein the wall comprises several layers (5, 6, 7) of microbial cellulose, wherein said layers are concentric or substantially concentric to a longitudinal axis (L) of the tube, a stent (9) which placed inside of the microbial cellulose tube (1), wherein an outer surface (10) of the stent contacts the inner surface (3) of the microbial cellulose tube (1), and method for producing such implant. The implant can be covered with newly created bile duct epithelium, thereby creating a new bile duct from body cells. The implant can be removed after completion of creation of the new bile duct. So, the implant as suitable as a temporary implant. The implant can be used for surgery, such as surgery of gall bladder, bile duct and/or liver, e.g. gall bladder removal, hepatobiliary malignancy surgery or liver transplantation.Type: ApplicationFiled: November 15, 2021Publication date: March 10, 2022Inventors: Falk RAUCHFUSS, Utz SETTMACHER, Dieter KLEMM, Wolfgang FRIED, Thomas RICHTER, Katrin PETZOLD-WELCKE, Carola RUHE
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Patent number: 10829567Abstract: Multi-phase biomaterials based on bacterially synthesized nanocellulose and method for producing same.Type: GrantFiled: January 15, 2015Date of Patent: November 10, 2020Assignee: JENACELL GMBHInventors: Nadine Hessler, Barno Baumbach, Dieter Klemm
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Publication number: 20180221129Abstract: Medical Implant (100), comprising—a microbial cellulose tube (1), comprising a wall (2) having an inner surface (3) and an outer surface (4), wherein the wall comprises several layers (5, 6, 7) of microbial cellulose, wherein said layers are concentric or substantially concentric to a longitudinal axis (L) of the tube,—a stent (9) which placed inside of the microbial cellulose tube (1), wherein an outer surface (10) of the stent contacts the inner surface (3) of the microbial cellulose tube (1), and method for producing such implant. The implant can be covered with newly created bile duct epithelium, thereby creating a new bile duct from body cells. The implant can be removed after completion of creation of the new bile duct. So, the implant as suitable as a temporary implant. The implant can be used for surgery, such as surgery of gall bladder, bile duct and/or liver, e.g. gall bladder removal, hepatobiliary malignancy surgery or liver transplantation.Type: ApplicationFiled: August 3, 2016Publication date: August 9, 2018Inventors: Falk RAUCHFUSS, Utz SETTMACHER, Dieter KLEMM, Wolfgang FRIED, Thomas RICHTER, Katrin PETZOLD-WELCKE, Carola RUHE
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Publication number: 20150225486Abstract: Multi-phase biomaterials based on bacterially synthesized nanocellulose and method for producing same.Type: ApplicationFiled: January 15, 2015Publication date: August 13, 2015Inventors: Nadine Hessler, Barno Sultanova, Dieter Klemm
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Publication number: 20130004784Abstract: Multiphase biomaterials are provided which are based on bacterially synthesized nanocellulose (BNC) including at least two different bacterial cellulose networks. To this end, a culture median is inoculated with at least two different cellulose-producing bacterial strains.Type: ApplicationFiled: March 15, 2011Publication date: January 3, 2013Inventors: Nadine Hessler, Barno Sultanova, Dieter Klemm
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Patent number: 6893497Abstract: The invention concerns the use of water-soluble polysaccharide derivatives as dispersing agents for mineral binder suspensions. A partially hydrolyzed cellulose containing carboxyl groups and optionally hydroxyalkyl and/or sulfate groups and/or a partially hydrolyzed amylose-rich starch which also has sulfoalkyl groups with 1 to 4 carbon atoms is used as the polysaccharide derivative. These polysaccharide derivatives have a low viscosity and an excellent plasticizing effect in mineral binder suspensions, especially in those based on cement, lime and/or gypsum.Type: GrantFiled: March 21, 2002Date of Patent: May 17, 2005Assignee: Degussa Construction Chemicals GmbHInventors: Lars Einfeldt, Gerhard Albrecht, Alfred Kern, Matilde Calado Vieira, Dieter Klemm
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Patent number: 6852852Abstract: A method of producing a cellueose ether that is predominantly substituted in the C2 position of the anhydroglucose unit of the cellulose is described. The regioselectively substituted saccharide ester produced according to the method of the present invention is selected from the group consisting of oligo-saccharide ester and polysaccharide ester, having a partial average degree of substitution (AS) at the C2 position of its anhydroglucose unit of at least 90% relative to the total AS. Also described is a blood plasma expander comprising the regioselectively substituted ester.Type: GrantFiled: October 17, 2002Date of Patent: February 8, 2005Assignee: Wolff Walsrode AGInventors: Erik-Andreas Klohr, Wolfgang Koch, Dieter Klemm, René Dicke
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Publication number: 20040103824Abstract: The invention concerns the use of water-soluble polysaccharide derivatives as dispersing agents for mineral binder suspensions. A partially hydrolyzed cellulose containing carboxyl groups and optionally hydroxyalkyl and/or sulfate groups and/or a partially hydrolyzed amylose-rich starch which also has sulfoalkyl groups with 1 to 4 carbon atoms is used as the polysaccharide derivative. These polysaccharide derivatives have a low viscosity and an excellent plasticizing effect in mineral binder suspensions, especially in those based on cement, lime and/or gypsum.Type: ApplicationFiled: September 19, 2003Publication date: June 3, 2004Inventors: Lars Einfeldt, Gerhard Albrecht, Alfred Kern, Matilde Calado Vieira, Dieter Klemm
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Publication number: 20030162745Abstract: A regioselectively substituted member selected from the group consisting of oligo-saccharide ester and polysaccharide ester is disclosed. The ester has a partial average degree of substitution AS at the C2 position of its anhydroglucose unit of at least 90% relative to the total AS. Also disclosed is a method of producing the regioselectively substituted ester. The method entails reacting in the presence of a catalyst a dissolved or a highly swollen oligo-saccharide or polysaccharide with an esterification reagent.Type: ApplicationFiled: October 17, 2002Publication date: August 28, 2003Inventors: Erik-Andreas Klohr, Wolfgang Koch, Dieter Klemm, Rene Dicke
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Publication number: 20030013163Abstract: The use of exogenic materials for replacing blood vessels carries the risk of thrombosis and is therefore particularly unsuitable for microsurgical applications (inner vessel diameters of 1-3 mm and less), or only suitable under certain conditions. Replacements of blood vessels with a very small lumen in particular require biomaterials which guarantee that the surfaces of the prosthesis that come into contact with the blood are of a very high quality, and which reliably avoid this kind of thrombosis adhesion. The biomaterial is produced by immersing shaped body walls, especially of a glass matrix consisting of a glass tube and glass body, in a container of an inoculated nutrient solution so that the inoculated nutrient solution is drawn into the area between the walls of the shaped body and cultivation takes place in a moist, aerobic environment.Type: ApplicationFiled: August 16, 2002Publication date: January 16, 2003Inventors: Dieter Klemm, Ulrike Udhardt, Silvia Marsch, Dieter Schumann
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Patent number: 6489468Abstract: A regioselectively substituted member selected from the group consisting of oligo-saccharide ester and polysaccharide ester is disclosed. The ester has a partial average degree of substitution AS at the C2 position of its anhydroglucose unit of at least 90% relative to the total AS. Also disclosed is a method of producing the regioselectively substituted ester. The method entails reacting in the presence of a catalyst a dissolved or a highly swollen oligo-saccharide or polysaccharide with an esterification reagent.Type: GrantFiled: February 29, 2000Date of Patent: December 3, 2002Assignee: Wolff Walsrode AGInventors: Erik-Andreas Klohr, Wolfgang Koch, Dieter Klemm, René Dicke
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Patent number: 6358754Abstract: Novel solid phase reaction supports are disclosed. The solid phase reaction supports include (a) a solid phase carrier having a multiplicity of NH2 functional groups; (b) a coupling compound covalently bonded to an NH2 group of the solid phase carrier; and (c) a receptor compound coupled to the solid phase carrier through the coupling compound. The coupling compound is preferably ascorbic acid, dehydroascorbic acid or a diketo compound structurally similar to ascorbic acid or dehydroascorbic acid. The solid phase carrier is preferably made of cellulose.Type: GrantFiled: July 10, 1998Date of Patent: March 19, 2002Assignee: Forschungszentrum Julich GmbHInventors: Peter Berlin, Jörg Tiller, Dieter Klemm
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Patent number: 6350621Abstract: Novel solid phase reaction supports are disclosed. The solid phase reaction supports include (a) a solid phase carrier having a multiplicity of NH2 functional groups of the Formula (I): in which R1 and R2 are each H, or R1 is H and R2 is an alkyl or acyl substituent with a degree of substitution ≦1 or R1 is an alkyl or acyl substituent with a degree of substitution ≦1, and R2 is H, or R1 and R2 are each a substituent with a degree of substitution ≦2 and R3 is an aromatic substituent containing at least one free amino group having a substitution degree ≦1; (b) a coupling compound covalently bonded to an NH2 group of the solid phase carrier; and (c) a receptor compound coupled to the solid phase carrier through the coupling compound.Type: GrantFiled: April 25, 2000Date of Patent: February 26, 2002Assignee: Forshungszentrum Mulich GmbHInventors: Peter Berlin, Jörg Tiller, Dieter Klemm
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Patent number: 4419047Abstract: The invention relates to a method of operation of a pump-turbine between part-load and reverse pumping operation in which the various operating conditions are produced by changing the position of the wicket gates in that some of the wicket gates are removed from the synchronous operation as provided by the mechanical gate ring operator and inserting a servo-motor between the wicket gate and the gate ring which functions to alter the connection between the selected wicket gates and the gate ring operator.Type: GrantFiled: June 15, 1982Date of Patent: December 6, 1983Assignee: Voith GmbHInventors: Dieter Klemm, Peter Ulith
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Patent number: 4308085Abstract: High molecular linear, thermoplastic, epoxide-amine-adducts containing the structural segment ##STR1## are prepared by a solvent-free reaction of equivalent amounts at 20 to 200.degree. C. of N,N'-bis(aralkyl) diamines (for example, N,N'-dibenzyl-ethylenediamine, N,N'-dibenzyl-p-xylylenediamine, N,N'-dibenzyl-4,4'-diamino-diphenylmethane, N,N'-dibenzyl-3,6-dioxa-octanediamine-1,8) with diepoxides (for example, 2,2-bis(4-glycidyloxyphenyl)propane). The polyadducts are soluble and may be processed by thermoplastic methods. The polyaddition process may be conducted for the forming of shaped objects in a form-shaping vessel, for the production of coatings directly upon the surface to be coated and also in the presence of inserted materials and has, due to these characteristics, the nature of a casting system.Type: GrantFiled: July 28, 1980Date of Patent: December 29, 1981Assignee: Jenoptik Jena GmbHInventors: Hans-Heinrich Horhold, Dieter Klemm, Klaus Bellstedt, Ludwig Haase, Joachim Klee, Klaus Schubert, Helmut Wachs, Rolf Martin