Patents by Inventor Gerd Fehrmann
Gerd Fehrmann 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: 11289702Abstract: An electrochemical voltage source has an anode containing lithium, a cathode containing manganese oxide, and a housing. The cathode and the anode are arranged in an interior of the housing and are arranged opposite one another. An electrolyte reservoir in the form of a compressible storage body, which receives an electrolyte, is arranged between the anode and the cathode. The storage body has a first side resting against an end face of the cathode and a second side, which faces away from the first side, and rests against an end face of the anode. The cathode experiences an increase in volume when the voltage source is discharged. The anode experiences a decrease in volume during the discharge. During the discharge, the absolute value of the volume increase of the cathode is at least as great as the absolute value of the volume decrease of the anode.Type: GrantFiled: August 13, 2018Date of Patent: March 29, 2022Assignee: LITRONIK Batterietechnologie GmbHInventors: Nico Freyer, Michael Roch, Roland Staub, Tim Traulsen, Gerd Fehrmann
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Publication number: 20190058190Abstract: An electrochemical voltage source has an anode containing lithium, a cathode containing manganese oxide, and a housing. The cathode and the anode are arranged in an interior of the housing and are arranged opposite one another. An electrolyte reservoir in the form of a compressible storage body, which receives an electrolyte, is arranged between the anode and the cathode. The storage body has a first side resting against an end face of the cathode and a second side, which faces away from the first side, and rests against an end face of the anode. The cathode experiences an increase in volume when the voltage source is discharged. The anode experiences a decrease in volume during the discharge. During the discharge, the absolute value of the volume increase of the cathode is at least as great as the absolute value of the volume decrease of the anode.Type: ApplicationFiled: August 13, 2018Publication date: February 21, 2019Inventors: Nico FREYER, Michael ROCH, Roland STAUB, Tim TRAULSEN, Gerd FEHRMANN
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Patent number: 9169121Abstract: A material, in particular an active material, for an electrode of a galvanic element, and a method for the production of the material, a mixture for the production of an electrode for a galvanic element, and a galvanic element, in particular a battery, and a medical implant comprising such a battery.Type: GrantFiled: July 17, 2012Date of Patent: October 27, 2015Assignee: LITRONIK Batterietechnologie GmbHInventors: Tim Traulsen, Gerd Fehrmann, Thomas Hucke, Andreas Deckert, Joerg Feller, Tom Schuffenhauer
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Patent number: 8722248Abstract: The present invention relates to an active element for a battery whose material contains copper oxyphosphate and an additive improving the conductivity. The proportion of the additive improving the conductivity in the material is between 3 and 7 wt. %, preferably between approximately 3 wt. % and approximately 5 wt. %, and the proportion of the copper oxyphosphate in the material adds up to 100 wt. %. The invention additionally relates to a battery having an active element of this type as well as a method for producing an active element of this type and a battery of this type. The battery according to the invention is suitable in particular for use in medical implants.Type: GrantFiled: August 26, 2008Date of Patent: May 13, 2014Assignee: Biotronik CRM Patent AGInventors: Juergen Drews, Tim Traulsen, Gerd Fehrmann, Thomas Hucke, Roland Staub
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Publication number: 20130022871Abstract: A material, in particular an active material, for an electrode of a galvanic element, and a method for the production of the material, a mixture for the production of an electrode for a galvanic element, and a galvanic element, in particular a battery, and a medical implant comprising such a battery.Type: ApplicationFiled: July 17, 2012Publication date: January 24, 2013Applicant: LITRONIK BATTERIETECHNOLOGIE GMBHInventors: Tim Traulsen, Gerd Fehrmann, Thomas Hucke, Andreas Deckert, Joerg Feller, Tom Schuffenhauer
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Patent number: 8210838Abstract: A method and device for producing a battery electrode (5) by: pouring a powder mixture quantity (6a) into a cavity (2), laying an electrically conductive diverter (4) on powder mixture (6a), pouring a further quantity (6b) of same powder mixture (6) into same cavity (2), and compressing the two powder mixture quantities (6a, 6b). The device has a filling cavity (2) for powder mixture (6), at least one compression means (1) for compressing powder mixture (6), and support (7) and fixing means (8) for positioning and fixing an electrically conductive diverter (4). The diverter (4) is situated so that partial quantities (6a, 6b) of powder mixture (6) are located above and below diverter (4). The support means (7) and fixing means (8) are situated in such a way that a ratio of the partial quantities (6a, 6b) of powder mixture (6) above and below the diverter (4) remains essentially maintained.Type: GrantFiled: June 14, 2010Date of Patent: July 3, 2012Assignee: Biotronik CRM Patent AGInventors: Gerd Fehrmann, Thomas Fischer, Thomas Hucke, Roland Staub, Jürgen Drews, Tim Traulsen
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Publication number: 20100243102Abstract: A method and device for producing a battery electrode (5) by: pouring a powder mixture quantity (6a) into a cavity (2), laying an electrically conductive diverter (4) on powder mixture (6a), pouring a further quantity (6b) of same powder mixture (6) into same cavity (2), and compressing the two powder mixture quantities (6a, 6b). The device has a filling cavity (2) for powder mixture (6), at least one compression means (1) for compressing powder mixture (6), and support (7) and fixing means (8) for positioning and fixing an electrically conductive diverter (4). The diverter (4) is situated so that partial quantities (6a, 6b) of powder mixture (6) are located above and below diverter (4). The support means (7) and fixing means (8) are situated in such a way that a ratio of the partial quantities (6a, 6b) of powder mixture (6) above and below the diverter (4) remains essentially maintained.Type: ApplicationFiled: June 14, 2010Publication date: September 30, 2010Inventors: Gerd Fehrmann, Thomas Fischer, Thomas Hucke, Roland Staub, Jürgen Drews, Tim Traulsen
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Patent number: 7794882Abstract: The invention relates, among other things, to an electrode for a lithium battery with an electrode element of a material consisting of or comprising: 2-10 parts by weight of a conductivity additive containing carbon, based on an anisotropic expanded graphite; 0-5 parts by weight of a plate-shaped, spherical or potato-shaped graphite; 1-8 parts by weight of a binding agent; and 77-97 parts by weight of an active material selected from the group metal, transition metal oxide and metal phosphate, said active material being capable of intercalating lithium ions in a crystal lattice.Type: GrantFiled: March 30, 2007Date of Patent: September 14, 2010Assignee: Biotronik CRM Patent AGInventors: Juergen Drews, Gerd Fehrmann, Thomas Fischer, Thomas Hucke, Roland Staub, Tim Traulsen
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Patent number: 7758782Abstract: A method and device for producing a battery electrode (5) by: pouring a powder mixture quantity (6a) into a cavity (2), laying an electrically conductive diverter (4) on powder mixture (6a), pouring a further quantity (6b) of same powder mixture (6) into same cavity (2), and compressing the two powder mixture quantities (6a, 6b). The device has a filling cavity (2) for powder mixture (6), at least one compression means (1) for compressing powder mixture (6), and support (7) and fixing means (8) for positioning and fixing an electrically conductive diverter (4). The diverter (4) is situated so that partial quantities (6a, 6b) of powder mixture (6) are located above and below diverter (4). The support means (7) and fixing means (8) are situated in such a way that a ratio of the partial quantities (6a, 6b) of powder mixture (6) above and below the diverter (4) remains essentially maintained.Type: GrantFiled: December 7, 2006Date of Patent: July 20, 2010Assignee: Biotronik CRM Patent AGInventors: Gerd Fehrmann, Thomas Fischer, Thomas Hucke, Roland Staub, Jürgen Drews, Tim Traulsen
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Publication number: 20100055566Abstract: The present invention relates to an active element for a battery whose material contains copper oxyphosphate and an additive improving the conductivity. The proportion of the additive improving the conductivity in the material is between 3 and 7 wt. %, preferably between approximately 3 wt. % and approximately 5 wt. %, and the proportion of the copper oxyphosphate in the material adds up to 100 wt. %. The invention additionally relates to a battery having an active element of this type as well as a method for producing an active element of this type and a battery of this type. The battery according to the invention is suitable in particular for use in medical implants.Type: ApplicationFiled: August 26, 2008Publication date: March 4, 2010Inventors: Juergen DREWS, Tim Traulsen, Gerd Fehrmann, Thomas Hucke, Roland Staub
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Publication number: 20070259268Abstract: The invention relates, among other things, to an electrode for a lithium battery with an electrode element of a material consisting of or comprising: 2-10 parts by weight of a conductivity additive containing carbon, based on an anisotropic expanded graphite; 0-5 parts by weight of a plate-shaped, spherical or potato-shaped graphite; 1-8 parts by weight of a binding agent; and 77-97 parts by weight of an active material selected from the group metal, transition metal oxide and metal phosphate, the active material being capable of intercalating lithium ions in the crystal latticeType: ApplicationFiled: March 30, 2007Publication date: November 8, 2007Inventors: Juergen DREWS, Gerd Fehrmann, Thomas Fisher, Thomas Hucke, Roland Staub, Tim Traulsen
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Publication number: 20070132143Abstract: A method and device for producing a battery electrode (5) by: pouring a powder mixture quantity (6a) into a cavity (2), laying an electrically conductive diverter (4) on powder mixture (6a), pouring a further quantity (6b) of same powder mixture (6) into same cavity (2), and compressing the two powder mixture quantities (6a, 6b). The device has a filling cavity (2) for powder mixture (6), at least one compression means (1) for compressing powder mixture (6), and support (7) and fixing means (8) for positioning and fixing an electrically conductive diverter (4). The diverter (4) is situated so that partial quantities (6a, 6b) of powder mixture (6) are located above and below diverter (4). The support means (7) and fixing means (8) are situated in such a way that a ratio of the partial quantities (6a, 6b) of powder mixture (6) above and below the diverter (4) remains essentially maintained.Type: ApplicationFiled: December 7, 2006Publication date: June 14, 2007Inventors: Gerd FEHRMANN, Thomas Fischer, Thomas Hucke, Roland Staub, Jurgen Drews, Tim Traulsen
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Patent number: 6044295Abstract: An implantable multi-function medical device, having a first therapy assembly that has a small current requirement and a second therapy assembly that has a large current requirement. The device further has a first battery component that is adapted to a consumer having a low current requirement, and a second battery component that is adapted to a consumer having a large current requirement, and a switching device which connects the second battery component only to the second therapy assembly until a control signal is emitted, which indicates that a predetermined voltage level of the first battery component has not been met, or that an internal resistance has been exceeded, but, as of this time, the switching device connects the second battery component to the first therapy assembly.Type: GrantFiled: April 16, 1998Date of Patent: March 28, 2000Assignee: Litronik Batterietechnologie GmbH & Co.Inventors: Juergen Pilz, Juergen Mueller, Roland Staub, Gerd Fehrmann
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Patent number: 5713936Abstract: A battery-operated implantable medical device comprises a battery, a measuring device for determining the state of charge of the battery through measurement of the no-load voltage, and an electric load. The no-load voltage of the battery has an increased drop in a range in which a remaining residual energy suffices to keep the operation of the device going for a minimum period of time required to carry out a therapeutic process.Type: GrantFiled: January 23, 1996Date of Patent: February 3, 1998Assignee: Litronik Batterietechnologie GmbH & Co.Inventors: Roland Staub, Gerd Fehrmann, Rudiger Wolf, Thomas Fischer, Hartmut Heimer
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Patent number: 5587258Abstract: A sealed galvanic cell which has high power and energy densities, a low self discharge, and an open circuit voltage which is related to state of discharge, and which is useful for supplying electrical power to an implantable device, such as a defibrillator and a nerve stimulator, with a large current consumption, and method of making same. The galvanic cell includes a casing; a cathode unit having at least one electrode composed of a mixture of at least one metal oxide and at least one lead compound; an anode unit having at least one electrode comprised of an alkali metal; and an organic electrolyte comprised of a mixture of (a) ethylene- and/or propylene carbonate, (b), 2-dimethoxyethane, and (c) a conducting salt. The mixture of the cathode unit is one of (a) a mixture of CrO.sub.x (x=2.5 to 2.7) and at least one lead compound from among PbCrO.sub.4, PbMoO.sub.4 and PbO, (b) a mixture of CrO.sub.x (x=2.5 to 2.7), MnO.sub.2, and at least one lead compound from among PbCrO.sub.4, PbMoO.sub.Type: GrantFiled: January 5, 1996Date of Patent: December 24, 1996Assignee: Litronik Batterietechnologie GmbH & Co.Inventors: Gerd Fehrmann, Rainer Frommel, Rudiger Wolf