Patents by Inventor Cecilia Maske
Cecilia Maske 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: 10763495Abstract: The conductivity of a zinc negative electrode is enhanced through use of surfactant-coated carbon fibers. Carbon fibers, along with other active materials such as bismuth oxide, zinc etc., form an electronically conductive matrix in zinc negative electrodes. Zinc negative electrodes as described herein are particularly useful in nickel zinc secondary batteries.Type: GrantFiled: January 24, 2018Date of Patent: September 1, 2020Assignee: ZincFive Power, Inc.Inventors: Jeffrey Phillips, Samaresh Mohanta, Deepan Chakkaravarthi Bose, Cecilia Maske
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Publication number: 20190036109Abstract: The conductivity of a zinc negative electrode is enhanced through use of surfactant-coated carbon fibers. Carbon fibers, along with other active materials such as bismuth oxide, zinc etc., form an electronically conductive matrix in zinc negative electrodes. Zinc negative electrodes as described herein are particularly useful in nickel zinc secondary batteries.Type: ApplicationFiled: January 24, 2018Publication date: January 31, 2019Inventors: Jeffrey Phillips, Samaresh Mohanta, Deepan Chakkaravarthi Bose, Cecilia Maske
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Patent number: 9947919Abstract: The conductivity of a zinc negative electrode is enhanced through use of surfactant-coated carbon fibers. Carbon fibers, along with other active materials such as bismuth oxide, zinc etc., form an electronically conductive matrix in zinc negative electrodes. Zinc negative electrodes as described herein are particularly useful in nickel zinc secondary batteries.Type: GrantFiled: August 6, 2010Date of Patent: April 17, 2018Assignee: ZincFive Power, Inc.Inventors: Jeffrey Phillips, Samaresh Mohanta, Deepan Bose, Cecilia Maske
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Publication number: 20140050949Abstract: A rechargeable pencil battery has a hollow cylindrical positive electrode including nickel hydroxide; a gelled negative electrode comprising at least one of zinc and a zinc compound; a separator interposed between the hollow cylindrical positive electrode and the gelled negative electrode; and a negative electrode current collector inserted into the gelled negative electrode. Rechargeable batteries of the invention are capable of between about 50 and 1000 cycles from a fully charge state to a fully discharged state at a discharge rates of about 0.5 C or greater, in some embodiments about 1 C or greater. Batteries of the invention have a ratio of length to diameter of between about 1.5:1 and about 20:1, and therefore can be longer than typical commercially available batteries but also include batteries of commercial sizes e.g. AAAA, AAA, AA, C, D, sub-C and the like.Type: ApplicationFiled: January 29, 2013Publication date: February 20, 2014Applicant: POWERGENIX SYSTEMS, INC.Inventors: Jeffrey Phillips, Samaresh Mohanta, Cecilia Maske
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Patent number: 8501351Abstract: Active material for a negative electrode of a rechargeable zinc alkaline electrochemical cell is made with zinc metal particles coated with tin and/or lead. The zinc particles may be coated by adding lead and tin salts to a slurry containing zinc particles, a thickening agent and water. The remaining zinc electrode constituents such as zinc oxide (ZnO), bismuth oxide (Bi2O3), a dispersing agent, and a binding agent such as Teflon are then added. The resulting slurry/paste has a stable viscosity and is easy to work with during manufacture of the zinc electrode. Further, the zinc electrode is much less prone to gassing when cobalt is present in the electrolyte. Cells manufactured from electrodes produced in accordance with this invention exhibit much less hydrogen gassing, by as much as 60-80%, than conventional cells. The cycle life and shelf life of the cells is also enhanced, as the zinc conductive matrix remains intact and shelf discharge is reduced.Type: GrantFiled: May 18, 2009Date of Patent: August 6, 2013Assignee: PowerGenix Systems, Inc.Inventors: Jeffrey Phillips, Samaresh Mohanta, Cecilia Maske, Deepan Chakkaravarthi Bose, James J. Wu, Bryan L. McKinney
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Patent number: 8048558Abstract: A nickel-zinc battery cell is formed with a negative can, a positive cap, and a jelly roll of electrochemically active positive and negative materials within. The inner surface of the can is protected with an anticorrosive material that may be coated or plated onto the can. Good electrical contact between the jelly roll and the cap is achieved through folding the nickel substrate over to contact a positive current collection disk.Type: GrantFiled: March 25, 2009Date of Patent: November 1, 2011Assignee: PowerGenix Systems, Inc.Inventors: Jeffrey Phillips, Franz Josef Kruger, Samaresh Mohanta, Sean Clinton, Ernest M. Rimanosky, Jason Zhao, Cecilia Maske, Zheng Gang Fan
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Publication number: 20110033747Abstract: The conductivity of a zinc negative electrode is enhanced through use of surfactant-coated carbon fibers. Carbon fibers, along with other active materials such as bismuth oxide, zinc etc., form an electronically conductive matrix in zinc negative electrodes. Zinc negative electrodes as described herein are particularly useful in nickel zinc secondary batteries.Type: ApplicationFiled: August 6, 2010Publication date: February 10, 2011Applicant: POWERGENIX SYSTEMS, INC.Inventors: Jeffrey Phillips, Samaresh Mohanta, Deepan Bose, Cecilia Maske
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Publication number: 20100291439Abstract: Active material for a negative electrode of a rechargeable zinc alkaline electrochemical cell is made with zinc metal particles coated with tin and/or lead. The zinc particles may be coated by adding lead and tin salts to a slurry containing zinc particles, a thickening agent and water. The remaining zinc electrode constituents such as zinc oxide (ZnO), bismuth oxide (Bi2O3), a dispersing agent, and a binding agent such as Teflon are then added. The resulting slurry/paste has a stable viscosity and is easy to work with during manufacture of the zinc electrode. Further, the zinc electrode is much less prone to gassing when cobalt is present in the electrolyte. Cells manufactured from electrodes produced in accordance with this invention exhibit much less hydrogen gassing, by as much as 60-80%, than conventional cells. The cycle life and shelf life of the cells is also enhanced, as the zinc conductive matrix remains intact and shelf discharge is reduced.Type: ApplicationFiled: May 18, 2009Publication date: November 18, 2010Applicant: PowerGenix Systems, Inc.Inventors: Jeffrey Phillips, Samaresh Mohanta, Cecilia Maske, Deepan Chakkaravarthi Bose, James J. Wu, Bryan L. McKinney
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Publication number: 20090233159Abstract: A nickel-zinc battery cell is formed with a negative can, a positive cap, and a jelly roll of electrochemically active positive and negative materials within. The inner surface of the can is protected with an anticorrosive material that may be coated or plated onto the can. Good electrical contact between the jelly roll and the cap is achieved through folding the nickel substrate over to contact a positive current collection disk.Type: ApplicationFiled: March 25, 2009Publication date: September 17, 2009Applicant: PowerGenix Systems, Inc.Inventors: Jeffrey Phillips, Franz Josef Kruger, Samaresh Mohanta, Sean Clinton, Ernest M. Rimanosky, Jason Zhao, Cecilia Maske, Zheng Gang Fan