Patents by Inventor Yuen-Ming Chang
Yuen-Ming Chang 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: 7226676Abstract: An energy conversion system, comprising: a reservoir container including at least two chambers of inversely variable volume for respectively storing a quantity of fuel and receiving a quantity of exhaust; a means for decreasing the volume of the first chamber while concurrently increasing the volume of the second chamber; at least one energy conversion device; first means for communicating fuel between the at least one energy conversion device and a first of the chambers in the reservoir container; and second means for communicating exhaust between the at least one energy conversion device and a second of the chambers in the reservoir container. The reservoir container may be transported to a recharging/refilling station or recharged in-situ. A particular application for metal-air fuel cell power systems is shown and described.Type: GrantFiled: May 5, 2003Date of Patent: June 5, 2007Assignee: Reveo, Inc.Inventors: Sadeg M. Faris, Tsepin Tsai, Wenbin Yao, Yuen-Ming Chang
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Publication number: 20040247969Abstract: Improved metal-air fuel cell battery systems having metal-fuel realized in the form of metal-fuel tape cartridges and metal-fuel cards, which can be either manually or automatically inserted within the power generation bay of the system. In order to produce a range of output voltages, the metal-fuel tape has a plurality of electrically-isolated metal-fuel tracks and the metal-fuel cards have a plurality of electrically-isolated metal-fuel strips. An output voltage configuration subsystem is provided for configuring the voltages produced by the individual cells to produce a desired output. A subsystem is provided for detecting oxide formation on the metal-fuel tracks and strips so that only metal-fuel that has been oxidized is reduced during recharging operations. A subsystem is also provided for controlling the flow of oxygen into the power generation head in order to control the power output from the system.Type: ApplicationFiled: April 7, 2003Publication date: December 9, 2004Inventors: Sadeg M. Faris, Yuen-Ming Chang, Tspin Tsai, Wenbin Yao
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Publication number: 20040048133Abstract: An energy conversion system, comprising: a reservoir container including at least two chambers of inversely variable volume for respectively storing a quantity of fuel and receiving a quantity of exhaust; a means for decreasing the volume of the first chamber while concurrently increasing the volume of the second chamber; at least one energy conversion device; first means for communicating fuel between the at least one energy conversion device and a first of the chambers in the reservoir container; and second means for communicating exhaust between the at least one energy conversion device and a second of the chambers in the reservoir container. The reservoir container may be transported to a recharging/refilling station or recharged in-situ. A particular application for metal-air fuel cell power systems is shown and described.Type: ApplicationFiled: May 5, 2003Publication date: March 11, 2004Inventors: Sadeg M. Faris, Tsepin Tsai, Wenbin Yao, Yuen-Ming Chang
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Patent number: 6605391Abstract: A highly conductive polymer based solid gel membrane is disclosed. The membrane is especially well suited for use in such electrochemical devices as, for example, aluminum/air, zinc/air, Zn/MnO2, Ni/Cd and hydrogen fuel cells, as well as in electrochromic devices such as smart windows and flat panel displays. In accordance with the principles of the invention, anion- and cation-conducting membranes are formed. The gel composition of the membrane contains the ionic species within its solution phase such that the species behaves as in a liquid electrolyte, while at the same time, the solid gel composition prevents the solution phase from diffusing into the device. Methods of forming polymer based solid gel membranes of the present invention are also disclosed.Type: GrantFiled: February 26, 1999Date of Patent: August 12, 2003Assignee: Reveo, Inc.Inventors: Muguo Chen, Tsepin Tsai, Wayne Yao, Yuen-Ming Chang, Lin-Feng Li, Karen Tom
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Publication number: 20030123147Abstract: A film for forming a 3D display body capable of obtaining a 3D image having higher display quality and a higher cubic feeling, by developing a 3D image containing right-eye image display portions a and left-eye display portions b in mixtures, wherein a laminate phase difference film 3 is formed by laminating, on a transparent support member 1, a plurality of phase differences films 3′ such as a polycarbonate film or stretched PVA film having birefringence in such a fashion that the optical axes thereof cross one another; predetermined portions of the laminate phase difference film 3 are removed; an appropriate synthetic resin 6 is packed into the removed portions and are set to the right-eye image display portions a; and portions of the laminate phase difference film 3 other than the right-eye image display portions a are set to the left-eye image display portions b.Type: ApplicationFiled: December 31, 2001Publication date: July 3, 2003Inventors: Sadeg M. Faris, Yashiro Minami, Yingqiu Jiang, Kazuo Maeda, Yuen-Ming Chang, Yuzuru Ohkawara, David C. Swift, Adam W. Divelbiss
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Publication number: 20030099872Abstract: A highly conductive polymer based solid gel membrane is disclosed. The membrane is especially well suited for use in such electrochemical devices as, for example, aluminum/air, zinc/air, Zn/MnO2, Ni/Cd and hydrogen fuel cells, as well as in electrochromic devices such as smart windows and flat panel displays. In accordance with the principles of the invention, anion- and cation-conducting membranes are formed. The gel composition of the membrane contains the ionic species within its solution phase such that the species behaves as in a liquid electrolyte, while at the same time, the solid gel composition prevents the solution phase from diffusing into the device. Methods of forming polymer based solid gel membranes of the present invention are also disclosed.Type: ApplicationFiled: February 26, 1999Publication date: May 29, 2003Inventors: MUGUO CHEN, TSEPIN TSAI, WAYNE YAO, YUEN-MING CHANG, LIN-FENG LI, KAREN TOM
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Patent number: 6558825Abstract: An energy conversion system, comprising: a reservoir container including at least two chambers of inversely variable volume for respectively storing a quantity of fuel and receiving a quantity of exhaust; a means for decreasing the volume of the first chamber while concurrently increasing the volume of the second chamber; at least one energy conversion device; first means for communicating fuel between the at least one energy conversion device and a first of the chambers in the reservoir container; and second means for communicating exhaust between the at least one energy conversion device and a second of the chambers in the reservoir container. The reservoir container may be transported to a recharging/refilling station or recharged in-situ. A particular application for metal-air fuel cell power systems is shown and described.Type: GrantFiled: May 12, 2000Date of Patent: May 6, 2003Assignee: Reveo, Inc.Inventors: Sadeg M. Faris, Tsepin Tsai, Wayne Yao, Yuen-Ming Chang
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Patent number: 6544678Abstract: Improved metal-air fuel cell battery systems having metal-fuel realized in the form of metal-fuel tape cartridges and metal-fuel cards, which can be either manually or automatically inserted within the power generation bay of the system. In order to produce a range of output voltages, the metal-fuel tape has a plurality of electrically-isolated metal-fuel tracks and the metal-fuel cards have a plurality of electrically-isolated metal-fuel strips. An output voltage configuration subsystem is provided for configuring the voltages produced by the individual cells to produce a desired output. A subsystem is provided for detecting oxide formation on the metal-fuel tracks and strips so that only metal-fuel that has been oxidized is reduced during recharging operations. A subsystem is also provided for controlling the flow of oxygen into the power generation head in order to control the power output from the system.Type: GrantFiled: January 11, 2001Date of Patent: April 8, 2003Assignee: Reveo, Inc.Inventors: Sadeg M. Faris, Yuen-Ming Chang, Tsepin Tsai, Wayne Yao
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Publication number: 20030022047Abstract: A highly conductive polymer based solid gel membrane is disclosed. The membrane is especially well suited for use in such electrochemical devices as, for example, aluminum/air, zinc/air, Zn/MnO2, Ni/Cd and hydrogen fuel cells, as well as in electrochromic devices such as smart windows and flat panel displays. In accordance with the principles of the invention, anion- and cation-conducting membranes are formed. The gel composition of the membrane contains the ionic species within its solution phase such that the species behaves as in a liquid electrolyte, while at the same time, the solid gel composition prevents the solution phase from diffusing into the device. Methods of forming polymer based solid gel membranes of the present invention are also disclosed.Type: ApplicationFiled: July 1, 2002Publication date: January 30, 2003Inventors: Muguo Chen, Tsepin Tsai, Wayne Yao, Yuen-Ming Chang, Lin-Feng Li, Karen Tom
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Patent number: 6383673Abstract: Improved electro-chemical power generation devices (e.g., metal-air fuel cell battery devices) having metal-fuel realized in the form of a metal-fuel card including a plurality of electrically-isolated metal-fuel elements (e.g., strips) disposed on the surface of substantially rigid and planar non-electrically-conductive substrate. The metal-fuel elements are in electrical contact with the anode contacting elements of the power generation device when the metal-fuel card is spatially registered to anode contacting elements of the electro-chemical power generation device. In another aspect of the present invention, an aperture formed in the substrate provides electrical contact between the metal-fuel element disposed on the first side of the substrate and the anode contacting element disposed on the second side of the substrate when the metal-fuel card is spatially registered to the anode contacting element.Type: GrantFiled: August 31, 1998Date of Patent: May 7, 2002Assignee: Reveo, Inc.Inventors: Sadeg M. Faris, Yuen-Ming Chang, Tsepin Tsai, Wayne Yao
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Patent number: 6309771Abstract: Improved metal-air fuel cell battery systems having metal-fuel realized in the form of substantially planar metal-fuel cards of rigid construction, which can be either manually or automatically inserted within the power generation bay of the system. The power generation bay includes at least one electrically-conductive cathode element supported by a cathode support structure in a stationary position with respect to the cathode support structure, and at least one electrically-conductive anode-contacting element supported by an anode contacting structure in a stationary position with respect to the anode contacting structure. In order to produce a range of output voltages, the power generation bay includes a plurality of cells comprising cathode elements spatially arranged with anode contacting elements, and each metal-fuel card has a plurality of electrically-isolated metal-fuel strips that are spatially arranged with these cells when the metal-fuel card is inserted to the power generation bay.Type: GrantFiled: August 31, 1998Date of Patent: October 30, 2001Assignee: Reveo, IncInventors: Sadeg M. Faris, Yuen-Ming Chang, Tsepin Tsai, Wayne Yao
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Patent number: 6296960Abstract: Improved metal-air fuel cell battery systems having metal-fuel realized in the form of metal-fuel tape cartridges and metal-fuel cards, which can be either manually or automatically inserted within the power generation bay of the system. In order to produce a range of output voltages, the metal-fuel tape has a plurality of electrically-isolated metal-fuel tracks and the metal-fuel cards have a plurality of electrically-isolated metal-fuel strips. An output voltage configuration subsystem is provided for configuring the voltages produced by the individual cells to produce a desired output. A subsystem is provided for detecting oxide formation on the metal-fuel tracks and strips so that only metal-fuel that has been oxidized is reduced during recharging operations. A subsystem is also provided for controlling the flow of oxygen into the power generation head in order to control the power output from the system.Type: GrantFiled: October 6, 1997Date of Patent: October 2, 2001Assignee: Reveo, Inc.Inventors: Sadeg M. Faris, Yuen-Ming Chang, Tsepin Tsai, Wenbin Yao
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Publication number: 20010023036Abstract: Improved metal-air fuel cell battery systems having metal-fuel realized in the form of metal-fuel tape cartridges and metal-fuel cards, which can be either manually or automatically inserted within the power generation bay of the system. In order to produce a range of output voltages, the metal-fuel tape has a plurality of electrically-isolated metal-fuel tracks and the metal-fuel cards have a plurality of electrically-isolated metal-fuel strips. An output voltage configuration subsystem is provided for configuring the voltages produced by the individual cells to produce a desired output. A subsystem is provided for detecting oxide formation on the metal-fuel tracks and strips so that only metal-fuel that has been oxidized is reduced during recharging operations. A subsystem is also provided for controlling the flow of oxygen into the power generation head in order to control the power output from the system.Type: ApplicationFiled: January 11, 2001Publication date: September 20, 2001Inventors: Sadeg M. Faris, Yuen-Ming Chang, Tsepin Tsai, Wayne Yao
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Patent number: 6183914Abstract: A polymer-based electrolyte composition having excellent film-forming properties, flexibility, mechanical strength and high hydroxide conductivity is disclosed. The composition comprises an organic polymer having an alkyl quaternary ammonium salt structure; a nitrogen-containing, heterocyclic quaternary ammonium salt; and a metal hydroxide salt. In a preferred embodiment, the composition is cast in the form of a film that is suitable for use as an ion-conducting or other specialty membrane in a power source, such as for example an alkaline battery or fuel cell, that relies on hydroxide anion transport for its operation.Type: GrantFiled: September 17, 1998Date of Patent: February 6, 2001Assignee: Reveo, Inc.Inventors: Wayne Yao, Tsepin Tsai, Yuen-Ming Chang, Muguo Chen