Patents by Inventor Zdravko Menjak
Zdravko Menjak 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: 7435492Abstract: A hybrid fuel cell/battery including one or more electrochemical cell units comprising at least one cathode, at least one anode, and at least one auxiliary electrode. The auxiliary electrode works in combination with the anode to provide a current as a rechargeable battery while the anode and cathode work in combination to provide an electrical current as a fuel cell. The cathode and the auxiliary electrode may operate alone or in tandem to provide an electrical current.Type: GrantFiled: December 23, 2003Date of Patent: October 14, 2008Assignee: Ovonic Fuel Cell Company LLCInventors: Stanford R. Ovshinsky, Srinivasan Venkatesan, Boyko Aladjov, Hong Wang, Zdravko Menjak
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Patent number: 7014953Abstract: The present invention discloses a fuel cell, which incorporates a bipolar plate. The regenerative bipolar fuel cell of the present invention contains at least one hydrogen electrode in contact with a hydrogen stream and at least one oxygen electrode in contact with an oxygen stream. At least one electrolyte chamber is in contact with the hydrogen electrode and at least one electrolyte chamber is in contact with the oxygen electrode. The electrolyte chambers provide mechanical support within the fuel cell and provide an uninterrupted pathway for an electrolyte solution to contact the hydrogen electrode and the oxygen electrode, respectively. At least one bipolar plate is positioned between the hydrogen electrode and the oxygen electrode. The bipolar plate has a hydrogen side in contact with the hydrogen electrode and an oxygen side in contact with the oxygen electrode.Type: GrantFiled: October 22, 2002Date of Patent: March 21, 2006Assignee: Texaco Ovoric Fuel Cell, LLCInventors: Zdravko Menjak, Srinivasan Venkatesan, Boyko Aladjov, Latchezara M. Gradinarova, Hong Wang, Standford R. Ovshinsky, Subhash K. Dhar
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Patent number: 7008706Abstract: A vehicle drive system powered by a hybrid fuel cell including at least one cathode, at least one anode, and at least one auxiliary electrode. The auxiliary electrode works in combination with the anode to provide a current as a rechargeable battery while the anode and cathode work in combination to provide an electrical current as a fuel cell. The cathode and the auxiliary electrode may operate alone or in tandem to provide an electrical current.Type: GrantFiled: December 15, 2003Date of Patent: March 7, 2006Assignee: Ovonic Fuel Cell Company LLCInventors: Stanford R. Ovshinsky, Srinivasan Venkatesan, Zdravko Menjak, Boyko Aladjov, Hong Wang
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Patent number: 6998184Abstract: A hybrid fuel cell/battery including at least one cathode, at least one anode, and at least one auxiliary electrode. The auxiliary electrode works in combination with the anode to provide a current as a rechargeable battery while the anode and cathode work in combination to provide an electrical current as a fuel cell. The cathode and the auxiliary electrode may operate alone or in tandem to provide an electrical current.Type: GrantFiled: August 7, 2003Date of Patent: February 14, 2006Assignee: Texaco Ovonic Fuel Cell, LLCInventors: Srinivasan Venkatesan, Stanford R. Ovshinsky, Boyko Aladjov, Hong Wang, Zdravko Menjak, Subhash K. Dhar
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Patent number: 6989216Abstract: A fuel cell utilizing parallel flow of a hydrogen stream, an oxygen stream, and an electrolyte solution with respect to the electrodes, while maintaining mechanical support within the fuel cell. The fuel cell utilizes electrode assemblies having a frame overmolded around the electrode to maintain a flow rates and low pressure throughout the fuel cell. The fuel cell is also designed to maintain mechanical support within the fuel cell while the electrodes expand and contract in response to the absorption of oxygen and hydrogen.Type: GrantFiled: October 31, 2002Date of Patent: January 24, 2006Assignee: Texaco Ovonic Fuel Cell LLCInventors: Rajeev Puttaiah, Zdravko Menjak, Latchezara M. Gradinarova, Srinivasan Venkatesan, Boyko Aladjov, Subhash Dhar, Stanford R. Ovshinsky
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Patent number: 6938720Abstract: A steering input device for a steer-by-wire system is provided. The input device comprises a first shaft and a hand wheel. The first shaft is rotatably installed in a first housing. The hand wheel is connected to the first shaft such that the hand wheel and the first shaft drive one another. The hand wheel has a range of motion of between about ±45 degrees and about ±90 degrees. The hand wheel also has an outer dimension of about 12 inches. The range of motion and the outer dimension allow the steering input device to be installed in a vehicle in a non-conventional position relative to a twentieth century conventional position including at least one of the hand wheel extending from the first shaft extending along a length defining the vehicle on one of two sides thereof and the hand weel extending rearward in the vehicle farther than an instrument panel.Type: GrantFiled: May 9, 2002Date of Patent: September 6, 2005Assignee: Delphi Technologies, Inc.Inventors: Ratko Menjak, Zdravko Menjak, James Myrl Card
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Patent number: 6933072Abstract: A fuel cell utilizing parallel flow of a hydrogen stream, an oxygen stream, and an electrolyte solution with respect to the electrodes, while maintaining mechanical support within the fuel cell. The fuel cell contains multiple layers of electrodes which absorb and react hydrogen and oxygen. The fuel cell is designed to maintain mechanical support within the fuel cell while the electrodes expand and contract in response to the absorption of oxygen and hydrogen. The design of the fuel cell provides a substantially more compact design by not requiring space to allow for the expansion and contraction of the electrodes within the fuel cell.Type: GrantFiled: February 28, 2002Date of Patent: August 23, 2005Assignee: Energy Conersion Devices, Inc.Inventors: Zdravko Menjak, Boyko Aladjov, Srinivasan Venkatesan, Subhash K. Dhar, Stanford R. Ovshinsky
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Patent number: 6926986Abstract: A fuel cell utilizing parallel flow of a hydrogen stream, an oxygen stream, and an electrolyte solution with respect to the electrodes, while maintaining mechanical support within the fuel cell. The fuel cell utilizes encapsulated electrodes to maintain a high air flow rate and low pressure throughout the fuel cell. The fuel cell is also designed to maintain mechanical support within the fuel cell while the electrodes expand and contract in response to the absorption of oxygen and hydrogen. Gas is predistributed by the compression plates and electrode plates to supply the electrodes with high concentrations of oxygen from air.Type: GrantFiled: May 9, 2002Date of Patent: August 9, 2005Assignee: Energy Conversion DevicesInventors: Stanford R. Ovshinsky, Ana Menjak, Thomas Hopper, Zdravko Menjak, Kevin Fok, Boyko Aladjov, Srinivasan Venkatesan, Subhash K. Dhar
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Publication number: 20050042495Abstract: A fuel cell utilizing parallel flow of a hydrogen stream, an oxygen stream, and an electrolyte solution with respect to the electrodes, while maintaining mechanical support within the fuel cell. The fuel cell utilizes encapsulated electrodes to maintain a high air flow rate and low pressure throughout the fuel cell. The fuel cell is also designed to maintain mechanical support within the fuel cell while the electrodes expand and contract in response to the absorption of oxygen and hydrogen. Gas is predistributed by the compression plates and electrode plates to supply the electrodes with high concentrations of oxygen from air.Type: ApplicationFiled: May 9, 2002Publication date: February 24, 2005Inventors: Stanford Ovshinsky, Ana Menjak, Thomas Hopper, Zdravko Menjak, Kevin Fok, Boyko Aladjov, Srinivasan Venkatesan, Subhash Dhar
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Publication number: 20050031921Abstract: A hybrid fuel cell including at least one cathode, at least one anode, and at least one oxygen evolution electrode. The oxygen evolution electrode works in combination with the anode to produce hydrogen and/or oxygen as an electrolyzer while the anode and cathode work in combination to provide an electrical current as a fuel cell. The cathode and the oxygen evolution electrode may operate alone or in tandem during operation of the hybrid fuel cell.Type: ApplicationFiled: February 4, 2004Publication date: February 10, 2005Inventors: Stanford Ovshinsky, Srinivasan Venkatesan, Zdravko Menjak, Boyko Aladjov, Hong Wang
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Publication number: 20050031919Abstract: A hybrid fuel cell/battery including one or more electrochemical cell units comprising at least one cathode, at least one anode, and at least one auxiliary electrode. The auxiliary electrode works in combination with the anode to provide a current as a rechargeable battery while the anode and cathode work in combination to provide an electrical current as a fuel cell. The cathode and the auxiliary electrode may operate alone or in tandem to provide an electrical current.Type: ApplicationFiled: December 23, 2003Publication date: February 10, 2005Inventors: Stanford Ovshinsky, Srinivasan Venkatesan, Boyko Aladjov, Hong Wang, Zdravko Menjak
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Publication number: 20050031911Abstract: A hybrid fuel cell/battery including at least one cathode, at least one anode, and at least one auxiliary electrode. The auxiliary electrode works in combination with the anode to provide a current as a rechargeable battery while the anode and cathode work in combination to provide an electrical current as a fuel cell. The cathode and the auxiliary electrode may operate alone or in tandem to provide an electrical current.Type: ApplicationFiled: August 7, 2003Publication date: February 10, 2005Inventors: Srinivasan Venkatesan, Stanford Ovshinsky, Boyko Aladjov, Hong Wang, Zdravko Menjak, Subhash Dhar
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Publication number: 20050031912Abstract: A vehicle drive system powered by a hybrid fuel cell including at least one cathode, at least one anode, and at least one auxiliary electrode. The auxiliary electrode works in combination with the anode to provide a current as a rechargeable battery while the anode and cathode work in combination to provide an electrical current as a fuel cell. The cathode and the auxiliary electrode may operate alone or in tandem to provide an electrical current.Type: ApplicationFiled: December 15, 2003Publication date: February 10, 2005Inventors: Stanford Ovshinsky, Srinivasan Venkatesan, Zdravko Menjak, Boyko Aladjov, Hong Wang
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Patent number: 6828057Abstract: A fuel cell utilizing parallel flow of a hydrogen stream, an oxygen stream, and an electrolyte solution with respect to the electrodes, while maintaining mechanical support within the fuel cell. The fuel cell utilizes framed electrodes to maintain a high air flow rate and low pressure throughout the fuel cell. The fuel cell is also designed to maintain mechanical support within the fuel cell while the electrodes expand and contract in response to the absorption of oxygen and hydrogen. Gas is predistributed by the compression plates and frames to supply the electrodes with high concentrations of oxygen from air.Type: GrantFiled: April 29, 2002Date of Patent: December 7, 2004Assignee: Energy Conversion Devices, Inc.Inventors: Stanford R. Ovshinsky, Ana Menjak, Tom Hopper, Zdravko Menjak, Kevin Fok, Boyko Aladjov, Srinivasan Venkatesan, Subhash K. Dhar
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Publication number: 20040161652Abstract: An ambient temperature alkaline fuel cell pack supplied with a non-forced electrolyte and air stream which are circulated through the fuel cell pack via thermal convection resulting from heat produced during the reactions at the hydrogen and air electrodes.Type: ApplicationFiled: February 12, 2003Publication date: August 19, 2004Inventors: Stanford R. Ovshinsky, Zdravko Menjak, Srinivasan Venkatesan, Latchezara Gradinarova, Ana Menjak, Hong Wang, Peter Faguy, Subhash K. Dhar
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Patent number: 6749040Abstract: “An electrically operated power steering apparatus has an electric motor disposed parallel to a rack shaft. The system is designed such that the motor can be installed in any angle around a rack housing of smaller diameter. This permits easy installation and flexibility of design. The apparatus is also designed to accommodate off-the-shelf electric motors that are commercially available so as to eliminate the need to customize an electric motor for each application.Type: GrantFiled: February 26, 2002Date of Patent: June 15, 2004Assignee: Delphi Technologies, Inc.Inventors: Zdravko Menjak, James Myrl Card, Ratko Menjak
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Patent number: 6708794Abstract: A drive-by wire steering system comprising a steering shaft and a steering wheel return mechanism is provided. The steering shaft comprises a first geared portion and a first end, where the first end is connectable to a vehicle's steering wheel. The steering wheel return mechanism comprises a torsion spring and a second geared portion. The first geared portion and the second geared portion are operatively engaged such that a first angular displacement of the steering shaft about a first axis imparts a second angular displacement about a second axis to the steering wheel return mechanism. The torsion spring is configured to generate a returning torque on the steering wheel return mechanism upon the second angular displacement of the steering wheel return mechanism. The returning torque has a direction opposite the first angular displacement, and is proportional to the second angular displacement.Type: GrantFiled: January 30, 2002Date of Patent: March 23, 2004Assignee: Delphi Technologies, Inc.Inventors: Ratko Menjak, Zdravko Menjak
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Patent number: 6705419Abstract: A drive-by wire steering system is provided. The system comprises a steering shaft and a center feel mechanism. The steering shaft is configured for a first angular displacement about a first axis. The steering shaft has a first geared portion and a first end connectable to a vehicle's steering wheel. The center feel mechanism comprises a cam face, an urging member and a second geared portion. The first geared portion and the second geared portion are operatively engaged such that the first angular displacement of the steering shaft imparts a second angular displacement about a second axis to the center feel mechanism. The cam face and the urging member are configured to generate a retuning torque to the center feel mechanism. The retuning torque has a direction opposite the second angular displacement.Type: GrantFiled: January 30, 2002Date of Patent: March 16, 2004Assignee: Delphi Technologies, Inc.Inventors: Ratko Menjak, Zdravko Menjak
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Publication number: 20030209381Abstract: A steering input device for a steer-by-wire system is provided. The input device comprises a first shaft and a hand wheel. The first shaft is rotatably installed in a first housing. The hand wheel is connected to the first shaft such that the hand wheel and the first shaft drive one another. The hand wheel has a range of motion of at least about ±45 degrees, but less than about ±90 degrees. The hand wheel also has an outer dimension of about 12 inches. The range of motion and the outer dimension allow the steering input device to be installed in a vehicle in a non-conventional position.Type: ApplicationFiled: May 9, 2002Publication date: November 13, 2003Inventors: Ratko Menjak, Zdravko Menjak, James Myrl Card
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Publication number: 20030203273Abstract: A fuel cell utilizing parallel flow of a hydrogen stream, an oxygen stream, and an electrolyte solution with respect to the electrodes, while maintaining mechanical support within the fuel cell. The fuel cell utilizes electrode assemblies having a frame overmolded around the electrode to maintain a flow rates and low pressure throughout the fuel cell. The fuel cell is also designed to maintain mechanical support within the fuel cell while the electrodes expand and contract in response to the absorption of oxygen and hydrogen.Type: ApplicationFiled: October 31, 2002Publication date: October 30, 2003Inventors: Rajeev Puttaiah, Zdravko Menjak, Latchezara M. Gradinarova, Srinivasan Venkatesan, Boyko Aladjov, Subhash Dhar, Stanford R. Ovshinsky