Patents by Inventor Georg Schaefer

Georg Schaefer 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).

  • Patent number: 9334356
    Abstract: The invention relates to a molding compound, comprising the following components: a) 60 to 96% by weight polyaryletherketone, b) 2 to 25% by weight hexagonal bornite, and c) 2 to 25% by weight talcum, wherein the sum of the parts by weight of components a), b), and c) is 100. Said compounds can be used to produce a film having a thickness of 5 to 1200 ?m, which is suitable for producing dimensionally stable circuit boards.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: May 10, 2016
    Assignee: Evonik Degussa GmbH
    Inventors: Joerg Blaschke, Kirsten Luetzeler, Walter Zink, Ricardo Luiz Willemann, Kathrin Salwiczek, Georg Schaefer
  • Patent number: 8535811
    Abstract: A polyamide molding composition which can be used for production of a printable or printed item contains a) at most 90 parts by weight of a polyamide obtained from a lactam or from an amino carboxylic acid having at least 10 carbon atoms; and b) from 10 to 100 parts by weight of PA1010, wherein a total of components a) and b) is 100 parts by weight.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: September 17, 2013
    Assignee: Evonik Degussa GmbH
    Inventors: Kirsten Luetzeler, Franz-Erich Baumann, Sonja Bollmann, Andreas Dowe, Roland Wursche, Georg Schaefer
  • Publication number: 20120196113
    Abstract: The invention relates to a molding compound, comprising the following components: a) 60 to 96% by weight polyaryletherketone, b) 2 to 25% by weight hexagonal bornite, and c) 2 to 25% by weight talcum, wherein the sum of the parts by weight of components a), b), and c) is 100. Said compounds can be used to produce a film having a thickness of 5 to 1200 ?m, which is suitable for producing dimensionally stable circuit boards.
    Type: Application
    Filed: October 19, 2010
    Publication date: August 2, 2012
    Applicant: Evonik Degussa GmbH
    Inventors: Joerg Blaschke, Kirsten Luetzeler, Walter Zink, Ricardo Luiz Willemann, Kathrin Salwiczek, Georg Schaefer
  • Patent number: 8003201
    Abstract: A polyamide molding composition which can be used for production of a printable or printed item contains a) at most 90 parts by weight of a polyamide obtained from a lactam or from an amino carboxylic acid having at least 10 carbon atoms; and b) from 10 to 100 parts by weight of PA1010, wherein a total of components a) and b) is 100 parts by weight.
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: August 23, 2011
    Assignee: Evonik Degussa GmbH
    Inventors: Kirsten Luetzeler, Franz-Erich Baumann, Sonja Bollmann, Andreas Dowe, Roland Wursche, Georg Schaefer
  • Publication number: 20070123622
    Abstract: The present invention provides compounds having both a pendent ether group and a pendent ester group that are useful as plasticizers for polymer resin and methods of making and using the same. In one embodiment of the invention, compounds according to the invention are formed by converting at least one, but not all, of the hydroxyl groups of a polyol having three or more hydroxyl groups (e.g., gylcerol, pentaerythritol or dipentaerythritol) to a pendent ether group to form a partially-etherized intermediate, and then converting at least one of the remaining hydroxyl groups in the partially-etherized intermediate to a pendent ester group.
    Type: Application
    Filed: November 29, 2005
    Publication date: May 31, 2007
    Applicant: FERRO CORPORATION
    Inventor: George Schaefer
  • Patent number: 6811722
    Abstract: The present invention provides a phthalate-free plasticizer for polymer resins. The phthalate-free plasticizer according to the invention includes a mixture of different triesters of glycerin, at least one of which meets the formula: CH2(OOR1)CH(OOR2)CH2(OOR3) wherein at least two of R1, R2, and R3 are different alkyl or aryl groups. Phthalate-free plasticizers according to the invention can be made by esterifying glycerin with a mixture of acids in the presence of a catalyst. Preferably, the mixture of acids includes at least two selected from the group consisting of alkyl acids and aryl acids, with each acid in the mixture containing up to about 11 carbon atoms, and more preferably from about 4 to about 9 carbon atoms each. The plasticizer according to the invention can be used to modify the properties of a wide variety of polymers including vinyl polymers, rubbers, polyurethanes, and acrylics, and has superb thermostability and low volatility.
    Type: Grant
    Filed: October 10, 2003
    Date of Patent: November 2, 2004
    Assignee: Ferro Corporation
    Inventors: Lei Zhou, George Schaefer, William W. Knickmeyer, David Paul
  • Publication number: 20040106819
    Abstract: The present invention provides a phthalate-free plasticizer for polymer resins.
    Type: Application
    Filed: October 10, 2003
    Publication date: June 3, 2004
    Applicant: Ferro Corporation
    Inventors: Lei Zhou, George Schaefer, William W. Knickmeyer, Pamela K. Knickmeyer, David Paul
  • Patent number: 6740254
    Abstract: The present invention provides a phthalate-free plasticizer for polymer resins. The phthalate-free plasticizer according to the invention includes a mixture of different triesters of glycerin, at least one of which meets the formula: CH2(OOR1)CH(OOR2)CH2(OOR3) wherein at least two of R1, R2, and R3 are different alkyl or aryl groups. Phthalate-free plasticizers according to the invention can be made by esterifying glycerin with a mixture of acids in the presence of a catalyst. In the presently most preferred embodiment of the invention, the mixture of acids includes benzoic acid and butanoic acid. The plasticizer according to the invention can be used to modify the properties of a wide variety of polymers including vinyl polymers, rubbers, polyurethanes, and acrylics, and has superb thermostability and low volatility.
    Type: Grant
    Filed: December 9, 2002
    Date of Patent: May 25, 2004
    Assignee: Ferro Corporation
    Inventors: Lei Zhou, George Schaefer
  • Patent number: 6652774
    Abstract: The present invention provides a phthalate-free plasticizer for polymer resins. The phthalate-free plasticizer according to the invention includes a mixture of different triesters of glycerin, at least one of which meets the formula: CH2(OOR1)CH(OOR2)CH2(OOR3) wherein at least two of R1, R2, and R3 are different alkyl or aryl groups. Phthalate-free plasticizers according to the invention can be made by esterifying glycerin with a mixture of acids in the presence of a catalyst. Preferably, the mixture of acids includes at least two selected from the group consisting of alkyl acids and aryl acids, with each acid in the mixture containing up to about 11 carbon atoms, and more preferably from about 4 to about 9 carbon atoms each. The plasticizer according to the invention can be used to modify the properties of a wide variety of polymers including vinyl polymers, rubbers, polyurethanes, and acrylics, and has superb thermostability and low volatility.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: November 25, 2003
    Assignee: Ferro Corporation
    Inventors: Lei Zhou, George Schaefer, William W. Knickmeyer, David Paul
  • Publication number: 20030116750
    Abstract: The present invention provides a phthalate-free plasticizer for polymer resins.
    Type: Application
    Filed: December 20, 2001
    Publication date: June 26, 2003
    Inventors: Lei Zhou, George Schaefer, William W. Knickmeyer, Pamela K. Knickmeyer, David Paul
  • Publication number: 20030120104
    Abstract: The present invention provides a phthalate-free plasticizer for polymer resins.
    Type: Application
    Filed: December 9, 2002
    Publication date: June 26, 2003
    Applicant: Ferro Corporation
    Inventors: Lei Zhou, George Schaefer
  • Patent number: 4116811
    Abstract: Organic compounds having active hydrogen are separated from heterogeneous mixtures of organic compounds, such as tar, which also contain organic compounds which do not have active hydrogen. The method involves preferential conversion of the active hydrogen compounds to soluble compounds by reaction with a reagent which is an alkene oxide or ethyleneimine, introducing a solvent for the soluble compounds whereby two phases are formed, and then separating the phases.
    Type: Grant
    Filed: February 4, 1977
    Date of Patent: September 26, 1978
    Inventors: Hans-Georg Schaefer, Axel Vogts