Patents by Inventor Jean Bouffard
Jean Bouffard 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: 9403781Abstract: The present invention provides novel and stable crystalline 1H-1,2,3 triazolium carbenes and metal complexes of 1H-1,2,3 triazolium carbenes. The present invention also provides methods of making 1H-1,2,3 triazolium carbenes and metal complexes of 1H-1,2,3 triazolium carbenes. The present invention also provides methods of using 1H-1,2,3 triazolium carbenes and metal complexes of 1H-1,2,3 triazolium carbenes in catalytic reactions.Type: GrantFiled: April 26, 2011Date of Patent: August 2, 2016Assignee: The Regents of the University of CaliforniaInventors: Guy Bertrand, Gregorio Gulsado-Barrios, Jean Bouffard, Bruno Donnadieu
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Publication number: 20130197178Abstract: The present invention provides novel and stable crystalline 1H-1,2,3 triazolium carbenes and metal complexes of 1H-1,2,3 triazolium carbenes. The present invention also provides methods of making 1H-1,2,3 triazolium carbenes and metal complexes of 1H-1,2,3 triazolium carbenes. The present invention also provides methods of using 1H-1,2,3 triazolium carbenes and metal complexes of 1H-1,2,3 triazolium carbenes in catalytic reactions.Type: ApplicationFiled: April 26, 2011Publication date: August 1, 2013Applicant: The Regents of the University of CaliforniaInventors: Guy Bertrand, Gregorio Gulsado-Barrios, Jean Bouffard, Bruno Donnadieu
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Patent number: 7862775Abstract: The present invention provides sensors and methods for determination of an analyte. The analytes may be determined by monitoring, for example, a change in an optical signal of an emissive material upon exposure to an analyte. In some embodiments, the analyte and the emissive material may interact via a chemical reaction, or other chemical, biochemical or biological interaction (e.g., recognition), to form a new emissive species. In some cases, the present invention may be used for the detection of analytes such as explosives (e.g., RDX, PETN). Methods of the present invention may be advantageous in that the high sensitivity of luminescence (e.g., fluorescence) spectroscopy can allow for the reliable detection of small changes in luminescence intensity.Type: GrantFiled: January 26, 2010Date of Patent: January 4, 2011Assignee: Massachusetts Institute of TechnologyInventors: Timothy M. Swager, Trisha L. Andrew, Samuel W. Thomas, III, Jean Bouffard
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Publication number: 20100303672Abstract: The present invention provides sensors and methods for determination of an analyte. The analytes may be determined by monitoring, for example, a change in an optical signal of an emissive material upon exposure to an analyte. In some embodiments, the analyte and the emissive material may interact via a chemical reaction, or other chemical, biochemical or biological interaction (e.g., recognition), to form a new emissive species. In some cases, the present invention may be used for the detection of analytes such as explosives (e.g., RDX, PETN). Methods of the present invention may be advantageous in that the high sensitivity of luminescence (e.g., fluorescence) spectroscopy can allow for the reliable detection of small changes in luminescence intensity.Type: ApplicationFiled: January 26, 2010Publication date: December 2, 2010Applicant: Massachusetts Institute of TechnologyInventors: Timothy M. Swager, Trisha L. Andrew, Samuel W. Thomas, Jean Bouffard
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Patent number: 7671166Abstract: The present invention provides materials, devices, and methods involving new heterocyclic, shape-persistent monomeric units with internal free volume. In some cases, materials the present invention may comprise monomers, oligomers, or polymers that incorporate a heterocyclic, shape-persistent iptycene. The present invention may provide materials having low dielectric constants and improved stability at high operating temperatures due to the electron-poor character of materials. In addition, compositions of the invention may be easily synthesized and readily modified to suit a particular application.Type: GrantFiled: January 20, 2006Date of Patent: March 2, 2010Assignee: Massachusetts Institute of TechnologyInventors: Timothy M. Swager, Jean Bouffard
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Patent number: 7666684Abstract: The present invention provides sensors and methods for determination of an analyte. The analytes may be determined by monitoring, for example, a change in an optical signal of an emissive material upon exposure to an analyte. In some embodiments, the analyte and the emissive material may interact via a chemical reaction, or other chemical, biochemical or biological interaction (e.g., recognition), to form a new emissive species. In some cases, the present invention may be used for the detection of analytes such as explosives (e.g., RDX, PETN). Methods of the present invention may be advantageous in that the high sensitivity of luminescence (e.g., fluorescence) spectroscopy can allow for the reliable detection of small changes in luminescence intensity.Type: GrantFiled: October 16, 2006Date of Patent: February 23, 2010Assignee: Massachusetts Institute of TechnologyInventors: Timothy M. Swager, Trisha L. Andrew, Samuel W. Thomas, Jean Bouffard
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Publication number: 20100022011Abstract: The present invention provides sensors and methods for determination of an analyte. The analytes may be determined by monitoring, for example, a change in an optical signal of an emissive material upon exposure to an analyte. In some embodiments, the analyte and the emissive material may interact via a chemical reaction, or other chemical, biochemical or biological interaction (e.g., recognition), to form a new emissive species. In some cases, the present invention may be used for the detection of analytes such as explosives (e.g., RDX, PETN). Methods of the present invention may be advantageous in that the high sensitivity of luminescence (e.g., fluorescence) spectroscopy can allow for the reliable detection of small changes in luminescence intensity.Type: ApplicationFiled: October 16, 2006Publication date: January 28, 2010Applicant: Massachusetts Institute of TechnologyInventors: Timothy M. Swager, Trisha L. Andrew, Samuel W. Thomas, Jean Bouffard
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Publication number: 20070255944Abstract: The inventive method for remotely authenticating a user (2) by a provider (1) consists a) in transmitting an identifier (Id) from the user (2) to the provider (1), in determining a code (C) processing rule (R) by the supplier, wherein said code (C) is available to the user (2) and the provider (1), c) in transmitting the code (C) processing rule (R) from the provider (1) to the user (1), d) in processing the code (C) by the user (2) by means of the processing rule (R) in order to obtain first authentication data (A1), e) in transmitting said first authentication data (A1) from the user to the provider (1) and independently of the previous stages from c) to e), f) in processing said code (C) by the provider (1) by means of the processing rule (R) in such a way that second authentication data (A2) is obtainable and g) in comparing said first (A1) and second (A2) authentication data by the provider (1).Type: ApplicationFiled: July 1, 2005Publication date: November 1, 2007Applicant: HSBC FRANCEInventors: Anne Buscaylet, Francois Moreau, Jean Bouffard
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Publication number: 20070117954Abstract: The present invention provides materials, devices, and methods involving new heterocyclic, shape-persistent monomeric units with internal free volume. In some cases, materials the present invention may comprise monomers, oligomers, or polymers that incorporate a heterocyclic, shape-persistent iptycene. The present invention may provide materials having low dielectric constants and improved stability at high operating temperatures due to the electron-poor character of materials. In addition, compositions of the invention may be easily synthesized and readily modified to suit a particular application.Type: ApplicationFiled: January 20, 2006Publication date: May 24, 2007Applicant: Massachusetts Institute of TechnologyInventors: Timothy Swager, Jean Bouffard
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Patent number: 4590754Abstract: Making a cable core unit in which pairs of twisted conductors are formed upon individual twisting machines, the twisted conductor pairs then fed `in-line` to a core forming device by passing the pairs through a tension reducing means which reduces tension in each pair while allowing the lengths of the pairs to be different from pair-to-pair as they move into the core forming device. Built-in tensions and twisted core units are thus avoided. Also provided is a tension equalizing device which averages out the tensions between conductor pairs.Type: GrantFiled: December 27, 1983Date of Patent: May 27, 1986Assignee: Northern Telecom LimitedInventors: Jean Bouffard, Andre Dumoulin, Marc Seguin
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Patent number: 4550558Abstract: Cradle for a twisting machine with a reel spindle and friction engaging means to engage a reel mounted upon the spindle. The friction engaging means faces the free end of the spindle and is movable axially away from the free end against a resilient means. A means is provided to urge the reel against the engaging means. In a practical structure, the friction engaging means is annular.Type: GrantFiled: December 27, 1983Date of Patent: November 5, 1985Assignee: Northern Telecom LimitedInventors: Jean Bouffard, Andre Dumoulin, Edgar K. Lederhose
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Patent number: 4525993Abstract: Twisting machine with a guide pulley for filamentary material and which is rotatable about its own axis and about a second axis causing air to impinge on one of the pulley sides. Impeller surfaces extend inwardly from the pulley rim to axis in rotating the pulley because of air impingement. Conveniently, the impeller surfaces are formed on spokes of the pulley.Type: GrantFiled: December 27, 1983Date of Patent: July 2, 1985Assignee: Northern Telecom LimitedInventors: Andre Dumoulin, Marc Seguin, Jean Bouffard
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Patent number: 4523423Abstract: Cradle for a twisting machine with a brake for a reel spindle comprising a brake drum and first and second brake shoes operable in succession. The in succession operation is achieved with a brake release link which pivots about either of two relatively offset axes. A component of load is placed upon the release link initially in one direction to cause it to pivot around one of the axes and operate the first brake shoe. Pivoting then takes place around the other axis to operate the second brake shoe.Type: GrantFiled: December 27, 1983Date of Patent: June 18, 1985Assignee: Northern Telecom LimitedInventors: Jean Bouffard, Andre Dumoulin, Edgar K. Lederhose
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Patent number: 4201250Abstract: A device for filling the interstices of multi-stranded cable with powder, comprising an outer cylindrical housing and a concentric inner tube with an annular chamber between them. The tube at one end carries a coaxial impeller located at the outlet end portion of the housing. Powder is fed into the chamber and a helical screw pushes the powder onto the impeller which is rotated to distribute the powder onto conductors passing from a strander around the device and into a closing die.Type: GrantFiled: February 13, 1978Date of Patent: May 6, 1980Assignee: Northern Telecom LimitedInventors: Jorg-Hein Walling, Jean Bouffard
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Patent number: 4164245Abstract: A device for filling the interstices of multi-stranded cable with powder, comprising an outer cylindrical housing and a concentric inner tube with a closed annular chamber between them. A hopper opens into the chamber and the chamber opens into the tube. A feeder in the chamber pushes the powder from the opening of the hopper to the opening into the tube.Type: GrantFiled: February 13, 1978Date of Patent: August 14, 1979Assignee: Northern Telecom LimitedInventors: Jorg-Hein Walling, Jean Bouffard