Patents by Inventor Winfried Pommeranz
Winfried Pommeranz 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: 6479164Abstract: There is provided a method for preparing composite materials from renewable raw materials wherein natural raw materials, especially in fiber form, comprising starch as binder are molded by adding water in accordance with a predetermined temperature and time profile to form boards and molded articles. The advantages of this method reside in said materials being fully biodegradable and free from harmful substances.Type: GrantFiled: April 6, 1998Date of Patent: November 12, 2002Assignee: Biotec Biologische Naturverpackungen GmbH & Co. KGInventors: Jürgen Lörcks, Winfried Pommeranz, Kurt Klenke, Harald Schmidt, Joachim Heuer
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Patent number: 6472497Abstract: Thermoplastic starch compositions formed by converting native starch or starch derivatives into thermoplastic starch by at least one hydrophobic biodegradable polymer that functions as a plasticizer for starch. The hydrophobic biodegradable polymer may be a polymer selected from the following list: an aliphatic polyester, a copolyester with aliphatic and aromatic blocks, a polyester amide, a polyester urethane, a polyethylene oxide polymer and/or a polyglycol, and/or mixtures of these. When the starch, such as in particular native starch or derivatives thereof, is mixed in the melt with the hydrophobic biodegradable polymer as a plasticizer or swelling agent, to homogenize the mixture, the water content is reduced to less than about 5% by weight based on the weight of the mixture.Type: GrantFiled: April 30, 2001Date of Patent: October 29, 2002Assignee: Biotec Biologische Naturverpackungen & Co KGInventors: Jurgen Loercks, Winfried Pommeranz, Harald Schmidt, Ralf Timmermann, Ernst Grigat, Wolfgang Schulz-Schlitte
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Publication number: 20010039303Abstract: Thermoplastic starch compositions formed by converting native starch or starch derivatives into thermoplastic starch by at least one hydrophobic biodegradable polymer that functions as a plasticizer for starch. The hydrophobic biodegradable polymer may be a polymer selected from the following list: an aliphatic polyester, a copolyester with aliphatic and aromatic blocks, a polyester amide, a polyester urethane, a polyethylene oxide polymer and/or a polyglycol, and/or mixtures of these. When the starch, such as in particular native starch or derivatives thereof, is mixed in the melt with the hydrophobic biodegradable polymer as a plasticizer or swelling agent, to homogenize the mixture, the water content is reduced to less than about 5% by weight based on the weight of the mixture.Type: ApplicationFiled: April 30, 2001Publication date: November 8, 2001Inventors: Jurgen Loercks, Winfried Pommeranz, Harald Schmidt, Ralf Timmermann, Ernst Grigat, Wolfgang Schulz-Schlitte
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Patent number: 6307003Abstract: The present invention relates to a compostable adhesive, to a method of producing the same, and to the use of the adhesive for the adhesive bonding of materials.Type: GrantFiled: March 15, 1999Date of Patent: October 23, 2001Assignees: Bayer AG, Biotec BiologischeInventors: Ernst Grigat, Karsten-Josef Idel, Uwe Westeppe, Wolfgang Schulz-Schlitte, Winfried Pommeranz, Jürgen Lörcks, Harald Schmidt
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Patent number: 6235816Abstract: A biologically degradable polymer mixture containing at least one biopolymer made from renewable raw materials and a polymer selected from the following materials: an aromatic polyester; a polyester-copolymer with both aliphatic and aromatic blocks; a polyesteramide; a polyglycol; a polyester urethane; and/or mixtures of these components. The preferred renewable raw material is starch, more preferably native starch, most preferably native starch that has been predried.Type: GrantFiled: October 27, 1999Date of Patent: May 22, 2001Assignee: Biotec Biologische Naturverpackungen GmbHInventors: Jurgen Lorcks, Winfried Pommeranz, Harald Schmidt
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Patent number: 6235815Abstract: For converting native starch or starch derivatives into thermoplastic starch, added to the starch is at least one hydrophobic biodegradable polymer. This hydrophobic biodegradable polymer, which serves as a plasticizer or swelling agent, may be a polymer selected from the following list: an aliphatic polyester, a copolyester with aliphatic and aromatic blocks, a polyester amide, a polyester urethane, a polyethylene oxide polymer and/or a polyglycol, and/or mixtures of these. When the starch, such as in particular native starch or derivatives thereof, is mixed in the melt with the hydrophobic biodegradable polymer as a plasticizer or swelling agent, to homogenize the mixture, the water content is reduced to <1% by weight based on the weight of the mixture.Type: GrantFiled: December 18, 1998Date of Patent: May 22, 2001Assignee: Bio-tec Biologische Naturverpackungen & Co. KGInventors: Jurgen Loercks, Winfried Pommeranz, Harald Schmidt, Ralf Timmermann, Ernst Grigat, Wolfgang Schulz-Schlitte
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Patent number: 6218321Abstract: Articles of manufacture which comprise biodegradable fibers and fabrics made therefrom. The fibers are made from starch-based biodegradable thermoplastic polymers, which preferably include a an additional biodegradable thermoplastic polymer blended with thermoplastic starch for improved chemical and physical properties. Threads or fibers for the manufacture of these articles are drawn in a process that improves their mechanical properties, particularly their strength. These threads or fibers can be used in the manufacture of articles that have open, semi-densely packed or densely packed structures.Type: GrantFiled: August 25, 1997Date of Patent: April 17, 2001Assignee: Biotec Biologische Naturverpackungen GmbHInventors: Jurgen Lorcks, Winfried Pommeranz, Harald Schmidt
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Patent number: 6136097Abstract: A process is disclosed for producing thermoplastic starch based on renewable raw materials and, if required, for further processing it into a granulate. A low viscosity starch is modified under a low shearing stress during the extrusion process and leaves the extruder with an increased viscosity in the form of a strip, threads or in other geometrical shapes. The advantages of the invention mainly lie in the improved quality of the starch products, the preservation of the mechanical parts of the extruder installation and the increase of the nominal output of the extruder.Type: GrantFiled: February 5, 1996Date of Patent: October 24, 2000Assignee: Biotec Biologische Naturverpackungen GmbH & Co., Forschungs- und Entwichlungs KGInventors: Jurgen Lorcks, Winfried Pommeranz, Kurt Klenke, Harald Schmidt, Joachim Heuer
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Patent number: 6096809Abstract: A biologically degradable polymer mixture contains at least one starch biopolymer made from renewable raw materials, a plasticizer, and a polymer selected from the following materials: an aromatic polyester; a polyester-copolymer with both aliphatic and aromatic blocks; a polyesteramide; a polyglycol; a polyester urethane; and/or mixtures of these components.Type: GrantFiled: December 15, 1997Date of Patent: August 1, 2000Assignee: Bio-Tec Biologische Naturverpackungen GmbH & Co. KGInventors: Jurgen Lorcks, Winfried Pommeranz, Harald Schmidt
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Patent number: 5910350Abstract: A panel including a starch foam core which is composed of starch, which is one of resilient foam or hardened foam; and which has a form selected from the group consisting of a plurality of strands which are straight and in essentially parallel alignment with one another, and a plurality of strands which are bent and arranged in an undulating path; and at least one outer layer composed of sheet material and provided directly on a surface of the starch foam core in engaging contact therewith; wherein the panel is prepared in a continuous process.Type: GrantFiled: March 5, 1997Date of Patent: June 8, 1999Assignee: Bio-Tec Biologische Naturverpackugen GmbHInventors: Juergen Loracks, Winfried Pommeranz, Harald Schmidt
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Patent number: 5897944Abstract: The invention relates to a molded part made of completely biodegradable starch foamed material to be used for protecting transported articles and to a method for its preparation, wherein the starch foamed material is expanded to form starch foam profiled sections which are self-adhesive when moisture is applied and can be processed individually or so as to form single or multi-layer foam panels. The advantages reside in improved operating properties and minimized expenditure on packaging.Type: GrantFiled: March 6, 1997Date of Patent: April 27, 1999Assignee: Bio-Tec Biologische Naturverpackungen GmbHInventors: Juergen Loercks, Winfried Pommeranz, Harald Schmidt
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Patent number: 5770137Abstract: There is provided a method for preparing composite materials from renewable raw materials wherein natural raw materials, especially in fiber form, comprising starch as binder are molded by adding water in accordance with a predetermined temperature and time profile to form boards and molded articles. The advantages of this method reside in said materials being fully biodegradable and free from harmful substances.Type: GrantFiled: February 5, 1996Date of Patent: June 23, 1998Assignee: Biotec Biologische Naturverpackungen GmbH & Co.Inventors: Jurgen Lorcks, Winfried Pommeranz, Kurt Klenke, Harald Schmidt, Joachim Heuer
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Patent number: 5525281Abstract: There is provided a method for preparing biodegradable films from plant-based raw materials in the form of carbohydrates which method is continuous and carried out in one step. In the process the plant-based raw materials are modified and plastified and the films are prepared without interruption and in one step. The advantages of the invention reside in reduced shear stress of the starch molecules and thus in the improved properties of the films as well as in the cost-efficient, time-, energy- and space-saving manufacture.Type: GrantFiled: March 15, 1995Date of Patent: June 11, 1996Assignee: Biotec Biologische Naturverpackungen GmbH & Co.Inventors: Jurgen Lorcks, Winfried Pommeranz, Joachim Heuer, Kurt Klenke, Harald Schmidt
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Patent number: 5306544Abstract: A paper web for producing traymats or coasters, comprising, a highly hygroscopic support paper having two sides, and a sliding-reducing structure applied on at least one side of the support paper. The sliding reducing structure includes a coating applied on at least one side of the support paper, the coating forming a discrete structure on the support paper, being raised above the support paper, and increasing static friction. The coating is composed of an aqueous synthetic plastic dispersion based exclusively on a self-crosslinking acrylate.Type: GrantFiled: February 12, 1993Date of Patent: April 26, 1994Assignee: Eul & Guenther GmbH & Co. KGInventors: Winfried Pommeranz, Manfred Korn