Patents by Inventor Stephen Mazur
Stephen Mazur 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: 11928387Abstract: A method for controlling target sound playback. A display screen of a control device is configured to display a target sound user setting for controlling target sound playback, wherein the target sound user setting controls a stored target sound level parameter that is stored within memory of the control device. A target sound sequence is generated in accordance with the user setting. A speaker is driven with the target sound sequence. Other aspects are also described and claimed.Type: GrantFiled: June 4, 2021Date of Patent: March 12, 2024Assignee: Apple Inc.Inventors: Cecilia Casarini, Ian M. Fisch, Jakub Mazur, Mitchell R. Lerner, Pablo David Brazell Ruiz, Stephen W. Ryner, Jr., Tyrone T. Chen
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Publication number: 20190245177Abstract: The present invention is directed to a separator for an electrochemical cell comprising a web, the web comprising fibers of a polyimide and a protective region wherein the protective region impedes electrochemical reduction of the polyimide inside the electrochemical cell. The present invention is further directed to a multi-layer article and electrochemical cell containing the separator.Type: ApplicationFiled: April 12, 2019Publication date: August 8, 2019Inventors: T. Joseph Dennes, Raymond Adam, Srijanani Bhaskar, Noel Stephen Brabbs, David M. Groski, Eric Huebsch, Charles E. Jackson, JR., Stephen Mazur, Peiwen Zheng
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Patent number: 9475009Abstract: The present invention is directed to the preparation and use of aromatic polyimide nanowebs with amide-modified surfaces. Uses include as a filtration medium, and as a separator in batteries, particularly lithium-ion batteries. The invention is also directed to a method comprising the aromatic polyimide nanoweb with amide-modified surface. The invention is further directed to a multi-layer article comprising the aromatic polyimide nanoweb with amide-modified surface, and to an electrochemical cell comprising the multi-layer article.Type: GrantFiled: December 9, 2010Date of Patent: October 25, 2016Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: T. Joseph Dennes, Stephen Mazur
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Publication number: 20150325831Abstract: The present invention is directed to a separator for an electrochemical cell comprising a web, the web comprising fibers of a polyimide and a protective region wherein the protective region impedes electrochemical reduction of the polyimide inside the electrochemical cell. The present invention is further directed to a multi-layer article and electrochemical cell containing the separator.Type: ApplicationFiled: May 6, 2015Publication date: November 12, 2015Inventors: T. Joseph Dennes, Raymond Adam, Srijanani Bhaskar, Noel Stephen Brabbs, David M. Groski, Eric Huebsch, Charles E. Jackson, JR., Stephen Mazur, Peiwen Zheng
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Patent number: 8852808Abstract: This invention provides a multi-layer article comprising a first electrode material, a second electrode material, and a porous separator disposed between and in contact with the first and the second electrode materials, wherein the porous separator comprises a nanoweb consisting essentially of a plurality of nanofibers of a fully aromatic polyimide. Also provided is a method for preparing the multi-layer article, and an electrochemical cell employing the same. A multi-layer article comprising a polyimide nanoweb with enhanced properties is also provided.Type: GrantFiled: June 26, 2013Date of Patent: October 7, 2014Assignee: E I du Ponte de Nemours and CompanyInventors: Pankaj Arora, Stephane Francois Bazzana, T Joseph Dennes, Eric P Holowka, Lakshmi Krishnamurthy, Stephen Mazur, Glen E Simmonds
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Patent number: 8679200Abstract: A method for reducing the self discharge rate and the variability in the self discharge rate of an electrochemical cell wherein a porous separator is inserted between a cathode and an anode of the cell and the porous separator contains a nanoweb that comprises a plurality of nanofibers that may contain a fully aromatic polyimide and the fully aromatic polyimide has a degree of imidization of greater than 0.51 where degree of imidization is the ratio of the height of the imide C—N absorbance at 1375 cm?1 to the C—H absorbance at 1500 cm?1.Type: GrantFiled: November 18, 2011Date of Patent: March 25, 2014Assignee: E I du Pont de Nemours and CompanyInventors: T. Joseph Dennes, Stephen Mazur
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Publication number: 20130288136Abstract: This invention provides a multi-layer article comprising a first electrode material, a second electrode material, and a porous separator disposed between and in contact with the first and the second electrode materials, wherein the porous separator comprises a nanoweb consisting essentially of a plurality of nanofibers of a fully aromatic polyimide. Also provided is a method for preparing the multi-layer article, and an electrochemical cell employing the same. A multi-layer article comprising a polyimide nanoweb with enhanced properties is also provided.Type: ApplicationFiled: June 26, 2013Publication date: October 31, 2013Inventors: PANKAJ ARORA, Stephane Francois Bazzana, T. Joseph Dennes, Eric P. Holowka, Lakshmi Krishnamurthy, Stephen Mazur, Glen E. Simmonds
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Patent number: 8557444Abstract: This invention provides a multi-layer article comprising a first electrode material, a second electrode material, and a porous separator disposed between and in contact with the first and the second electrode materials, wherein the porous separator comprises a nanoweb consisting essentially of a plurality of nanofibers of a fully aromatic polyimide. Also provided is a method for preparing the multi-layer article, and an electrochemical cell employing the same. A multi-layer article comprising a polyimide nanoweb with enhanced properties is also provided.Type: GrantFiled: October 7, 2010Date of Patent: October 15, 2013Assignee: E I du Pont de Nemours and CompanyInventors: Pankaj Arora, Stephane Francois Bazzana, T. Joseph Dennes, Eric P. Holowka, Lakshmi Krishnamurthy, Stephen Mazur, Glen E. Simmonds
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Patent number: 8518525Abstract: The present invention is directed to the preparation and use of aromatic polyimide nanowebs with amide-modified surfaces. Uses include as a filtration medium, and as a separator in batteries, particularly lithium-ion batteries. The invention is also directed to a filtration apparatus comprising the aromatic polyimide nanoweb with amide-modified surface. The invention is further directed to a multi-layer article comprising the aromatic polyimide nanoweb with amide-modified surface, and to an electrochemical cell comprising the multi-layer article.Type: GrantFiled: December 9, 2010Date of Patent: August 27, 2013Assignee: E I du Pont de Nemours and CompanyInventors: T. Joseph Dennes, Stephen Mazur
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Publication number: 20130133166Abstract: A method for reducing the self discharge rate and the variability in the self discharge rate of an electrochemical cell, wherein a porous separator is inserted between a cathode and an anode of the cell and the porous separator contains a nanoweb that comprises a plurality of nanofibers that may contain a fully aromatic polyimide and the fully aromatic polyimide has a degree of imidization of greater than 0.51 where degree of imidization is the ratio of the height of the imide C—N absorbance at 1375 cm?1 to the C—H absorbance at 1500 cm?1.Type: ApplicationFiled: May 22, 2012Publication date: May 30, 2013Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: T. Joseph Dennes, Stephen Mazur
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Publication number: 20130125358Abstract: A method for reducing the self discharge rate and the variability in the self discharge rate of an electrochemical cell.wherein a porous separator is inserted between a cathode and an anode of the cell and the porous separator contains a nanoweb that comprises a plurality of nanofibers that may contain a fully aromatic polyimide and the fully aromatic polyimide has a degree of imidization of greater than 0.51 where degree of imidization is the ratio of the height of the imide C—N absorbance at 1375 cm?1 to the C—H absorbance at 1500 cm?1.Type: ApplicationFiled: November 18, 2011Publication date: May 23, 2013Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: T. Joseph Dennes, Stephen Mazur
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Publication number: 20130022858Abstract: This invention relates to separators for batteries and other electrochemical cells, especially lithium-ion batteries, having a shutdown mechanism. The separator is a laminate that contains a nonwoven nanoweb and a porous layer composed of a plurality of thermoplastic particles having particle size smaller than the mean flow pore size of the nanoweb. The shutdown layer melts and starts to flow at a desired temperature, and restricts the ion flow path, resulting in a substantial decrease in ionic conductivity of the separator at the desired shutdown temperature, while leaving the separator intact.Type: ApplicationFiled: January 19, 2012Publication date: January 24, 2013Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: Stephen Mazur, Simon Frisk, Natalia V. Levit
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Publication number: 20120149852Abstract: The present invention is directed to the preparation and use of aromatic polyimide nanowebs with amide-modified surfaces. Uses include as a filtration medium, and as a separator in batteries, particularly lithium-ion batteries. The invention is also directed to a filtration apparatus comprising the aromatic polyimide nanoweb with amide-modified surface. The invention is further directed to a multi-layer article comprising the aromatic polyimide nanoweb with amide-modified surface, and to an electrochemical cell comprising the multi-layer article.Type: ApplicationFiled: December 9, 2010Publication date: June 14, 2012Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: T. Joseph Dennes, Stephen Mazur
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Publication number: 20120148896Abstract: The present invention is directed to the preparation and use of aromatic polyimide nanowebs with amide-modified surfaces. Uses include as a filtration medium, and as a separator in batteries, particularly lithium-ion batteries. The invention is also directed to a method comprising the aromatic polyimide nanoweb with amide-modified surface. The invention is further directed to a multi-layer article comprising the aromatic polyimide nanoweb with amide-modified surface, and to an electrochemical cell comprising the multi-layer article.Type: ApplicationFiled: December 9, 2010Publication date: June 14, 2012Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: T. JOSEPH DENNES, Stephen Mazur
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Publication number: 20120148897Abstract: The present invention is directed to the preparation and use of aromatic polyimide nanowebs with amide-modified surfaces. Uses include as a filtration medium, and as a separator in batteries, particularly lithium-ion batteries. The invention is also directed to a method comprising the aromatic polyimide nanoweb with amide-modified surface. The invention is further directed to a multi-layer article comprising the aromatic polyimide nanoweb with amide-modified surface, and to an electrochemical cell comprising the multi-layer article.Type: ApplicationFiled: December 9, 2010Publication date: June 14, 2012Applicant: E.I DU PONT DE NEMOURS AND COMPANYInventors: T. Joseph DENNES, Stephen Mazur
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Patent number: 8092860Abstract: Methods for oxidizing organic compounds coated or adsorbed on a topographically patterned solid surface are provided. The methods can be used to selectively remove the organic compounds from the non-recessed areas.Type: GrantFiled: March 13, 2008Date of Patent: January 10, 2012Assignee: E. I. du Pont de Nemours and CompanyInventor: Stephen Mazur
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Publication number: 20110143207Abstract: This invention provides a multi-layer article comprising a first electrode material, a second electrode material, and a porous separator disposed between and in contact with the first and the second electrode materials, wherein the porous separator comprises a nanoweb consisting essentially of a plurality of nanofibers of a fully aromatic polyimide. Also provided is a method for preparing the multi-layer article, and an electrochemical cell employing the same. A multi-layer article comprising a polyimide nanoweb with enhanced properties is also provided.Type: ApplicationFiled: October 7, 2010Publication date: June 16, 2011Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: PANKAJ ARORA, Stephane Francois Bazzana, T. Joseph Dennes, Eric P. Holowka, Lakshmi Krishnamurthy, Stephen Mazur, Glen E. Simmonds
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Publication number: 20110139331Abstract: The invention provides a method for enhancing the properties of polyimide nanowebs, the method comprising subjecting a nanoweb consisting essentially of a plurality of nanofibers of an aromatic polyimide to a temperature at least 50 C.° higher than the imidization temperature thereof for a period of time in the range of 5 seconds to 20 minutes, thereby preparing an enhanced nanoweb. Also provided is a multi-layer article comprising the enhanced nanoweb, and an electrochemical cell comprising the multi-layer article.Type: ApplicationFiled: October 7, 2010Publication date: June 16, 2011Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Pankaj Arora, Stephane Francois Bazzana, T. Joseph Dennes, Eric P. Holowka, Lakshmi Krishnamurthy, Stephen Mazur, Glen E. Simmonds
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Publication number: 20110139730Abstract: The present invention is directed to the preparation and use of aromatic polyimide nanowebs with amide-modified surfaces. Uses include as a filtration medium, and as a separator in batteries, particularly lithium-ion batteries. The invention is also directed to a method comprising the aromatic polyimide nanoweb with amide-modified surface. The invention is further directed to a multi-layer article comprising the aromatic polyimide nanoweb with amide-modified surface, and to an electrochemical cell comprising the multi-layer article.Type: ApplicationFiled: December 9, 2010Publication date: June 16, 2011Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: T. JOSEPH DENNES, STEPHEN MAZUR
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Publication number: 20110143217Abstract: This invention provides an electrochemical cell comprising a housing having disposed therewithin, an electrolyte, and a multi-layer article at least partially immersed in the electrolyte; the multi-layer article comprising a first metallic current collector, a first electrode material in electrically conductive contact with the first metallic current collector, a second electrode material in ionically conductive contact with the first electrode material, a porous separator disposed between and contacting the first electrode material and the second electrode material; and, a second metallic current collector in electrically conductive contact with the second electrode material, wherein the porous separator comprises a nanoweb consisting essentially of a plurality of nanofibers of a fully aromatic polyimide. Also provided is a process for preparing the multi-layer article. Further provided is an electrochemical cell wherein the separator is a polyimide nanoweb with enhanced properties.Type: ApplicationFiled: October 7, 2010Publication date: June 16, 2011Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: PANKAJ ARORA, Stephane Francois Bazzana, T. Joseph Dennes, Eric P. Holowka, Lakshmi Krishnamurthy, Stephen Mazur, Glen E. Simmonds