Patents by Inventor Francois Dupont
Francois Dupont 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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Publication number: 20240128303Abstract: An optoelectronic device including a light-emitting diode covered with a photoluminescent conversion layer based on a perovskite material.Type: ApplicationFiled: February 11, 2022Publication date: April 18, 2024Applicant: Commissariat à I'Énergie Atomique et aux Énergies AlternativesInventors: Florian Dupont, Francois Templier
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Patent number: 11909427Abstract: A circuit device includes a directional coupler with a first port receiving a radiofrequency signal, a second port outputting a signal in response to signal received by the first port, and a third port outputting a signal in response to a reflection of the signal at the second port. An impedance matching network is connected between the second port and an antenna. The impedance matching network includes fixed inductive and capacitive components and a single variable inductive or capacitive component. A diode coupled to the third port of the coupler generates a voltage at a measurement terminal which is processed in order to select and set the inductance or capacitance value of the variable inductive or capacitive component.Type: GrantFiled: February 24, 2023Date of Patent: February 20, 2024Assignee: STMicroelectronics (Tours) SASInventors: Jean Pierre Proot, Pascal Paillet, Francois Dupont
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Publication number: 20230198559Abstract: A circuit device includes a directional coupler with a first port receiving a radiofrequency signal, a second port outputting a signal in response to signal received by the first port, and a third port outputting a signal in response to a reflection of the signal at the second port. An impedance matching network is connected between the second port and an antenna. The impedance matching network includes fixed inductive and capacitive components and a single variable inductive or capacitive component. A diode coupled to the third port of the coupler generates a voltage at a measurement terminal which is processed in order to select and set the inductance or capacitance value of the variable inductive or capacitive component.Type: ApplicationFiled: February 24, 2023Publication date: June 22, 2023Applicant: STMicroelectronics (Tours) SASInventors: Jean Pierre PROOT, Pascal PAILLET, Francois DUPONT
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Patent number: 11661705Abstract: The invention relates to a paper coating slip composition comprising a copolymer of thickening acrylic acid, a mineral material in the form of particles, a binding agent, and water. The invention also relates to the use of said composition for the production of paper or cardboard, improving the water retention of the paper coating slip.Type: GrantFiled: December 17, 2018Date of Patent: May 30, 2023Assignee: COATEXInventors: Francis Bony, Clementine Champagne, Francois Dupont, Laurie Parrenin, Jean-Marc Suau
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Patent number: 11621734Abstract: A circuit device includes a directional coupler with a first port receiving a radiofrequency signal, a second port outputting a signal in response to signal received by the first port, and a third port outputting a signal in response to a reflection of the signal at the second port. An impedance matching network is connected between the second port and an antenna. The impedance matching network includes fixed inductive and capacitive components and a single variable inductive or capacitive component. A diode coupled to the third port of the coupler generates a voltage at a measurement terminal which is processed in order to select and set the inductance or capacitance value of the variable inductive or capacitive component.Type: GrantFiled: May 17, 2021Date of Patent: April 4, 2023Assignee: STMicroelectronics (Tours) SASInventors: Jean Pierre Proot, Pascal Paillet, Francois Dupont
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Patent number: 11214641Abstract: The invention relates to a copolymer obtained by polymerisation reaction of at least three comonomers: a first anionic monomer, a second monomer comprising an olefin unsaturation, and a third monomer comprising a hydrophobic group. The invention likewise relates to the use of said copolymer as a thickening agent, in particular in aqueous suspensions of mineral particles with high solids content. The copolymer according to the invention makes it possible to improve the compromise between viscosity with high shear gradient and viscosity with low shear gradient, while also improving water retention inside the suspension.Type: GrantFiled: September 29, 2017Date of Patent: January 4, 2022Assignee: COATEXInventors: Yves Matter, Jean-Marc Suau, Francis Bony, Francois Dupont
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Publication number: 20210367628Abstract: A circuit device includes a directional coupler with a first port receiving a radiofrequency signal, a second port outputting a signal in response to signal received by the first port, and a third port outputting a signal in response to a reflection of the signal at the second port. An impedance matching network is connected between the second port and an antenna. The impedance matching network includes fixed inductive and capacitive components and a single variable inductive or capacitive component. A diode coupled to the third port of the coupler generates a voltage at a measurement terminal which is processed in order to select and set the inductance or capacitance value of the variable inductive or capacitive component.Type: ApplicationFiled: May 17, 2021Publication date: November 25, 2021Applicant: STMicroelectronics (Tours) SASInventors: Jean Pierre PROOT, Pascal PAILLET, Francois DUPONT
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Publication number: 20200370245Abstract: The invention relates to a paper coating slip composition comprising a copolymer of thickening acrylic acid, a mineral material in the form of particles, a binding agent, and water. The invention also relates to the use of said composition for the production of paper or cardboard, improving the water retention of the paper coating slip.Type: ApplicationFiled: December 17, 2018Publication date: November 26, 2020Applicant: COATEXInventors: Francis BONY, Clementine CHAMPAGNE, Francois DUPONT, Laurie PARRENIN, Jean-Marc SUAU
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Patent number: 10550515Abstract: A method for deinking recycled paper, including a pulping step, and then a flotation step, which includes introduction of at least one dispersant of the polyacrylate type, representing from 0.05 to 3.5 wt % of the mineral fillers of the recycled paper. A specific dispersant is used during the flotation step of the method for deinking recycled paper.Type: GrantFiled: May 30, 2016Date of Patent: February 4, 2020Assignee: COATEXInventors: Francois Dupont, Jerome Blanc
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Publication number: 20190211125Abstract: The invention relates to a copolymer obtained by polymerisation reaction of at least three comonomers: a first anionic monomer, a second monomer comprising an olefin unsaturation, and a third monomer comprising a hydrophobic group. The invention likewise relates to the use of said copolymer as a thickening agent, in particular in aqueous suspensions of mineral particles with high solids content. The copolymer according to the invention makes it possible to improve the compromise between viscosity with high shear gradient and viscosity with low shear gradient, while also improving water retention inside the suspension.Type: ApplicationFiled: September 29, 2017Publication date: July 11, 2019Applicant: COATEXInventors: Yves MATTER, Jean-Marc SUAU, Francis BONY, Francois DUPONT
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Publication number: 20180105983Abstract: A method for deinking recycled paper, including a pulping step, and then a flotation step, which includes introduction of at least one dispersant of the polyacrylate type, representing from 0.05 to 3.5 wt % of the mineral fillers of the recycled paper. A specific dispersant is used during the flotation step of the method for deinking recycled paper.Type: ApplicationFiled: May 30, 2016Publication date: April 19, 2018Applicant: COATEXInventors: Francois DUPONT, Jerome BLANC
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Patent number: 9056932Abstract: Comb polymers useful in paper coating dispersions.Type: GrantFiled: June 1, 2011Date of Patent: June 16, 2015Assignee: COATEXInventors: Francois Dupont, Murielle Guillot, Renaud Souzy, Jean-Marc Suau
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Patent number: 8962145Abstract: The present invention concerns weakly anionic polymers including their use in paper coatings, especially those intended for paper for inkjet printing. These additives provide the sought thickening function, while improving water retention very appreciably. The invention also concerns a method of manufacture of such coatings, together with the coatings obtained in this manner.Type: GrantFiled: November 19, 2012Date of Patent: February 24, 2015Assignee: CoatexInventors: Murielle Guillot, Olivier Guerret, Francois Dupont
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Patent number: 8790491Abstract: The invention relates to coating slip including latex comprising styrene and with a particle size centered around 100 nm, the use of latex as an agent for reducing the low shear gradient viscosity and increasing the low shear gradient viscosity, and methods thereof.Type: GrantFiled: April 6, 2011Date of Patent: July 29, 2014Assignee: CoatexInventors: Renaud Souzy, Francois Dupont
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Patent number: 8773217Abstract: A distributed-line directional coupler including: a first conductive line between first and second ports intended to convey a signal to be transmitted; and a second conductive line, coupled to the first one, between third and fourth ports, the second line being interrupted approximately at its middle, the two intermediary ends being connected to attenuators.Type: GrantFiled: May 31, 2013Date of Patent: July 8, 2014Assignee: STMicroelectronics (Tours) SASInventors: François Dupont, Hilal Ezzeddine, Sylvain Charley
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Patent number: 8773216Abstract: A directional dual distributed coupler including: a first conductive line between first and second ports, intended to convey a signal to be transmitted in a first frequency band; a second conductive line coupled to the first one; a third conductive line between third and fourth ports, intended to convey a signal to be transmitted in a greater frequency band than the first one; a fourth conductive line coupled to the third one; and at least one diplexer connecting, on the side of the second and fourth ports, the respective ends of the second and fourth lines to a fifth port.Type: GrantFiled: September 27, 2010Date of Patent: July 8, 2014Assignee: STMicroelectronics (Tours) SASInventors: François Dupont, Benoît Bonnet, Sylvain Charley
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Patent number: 8569410Abstract: This invention relates to a process for producing a composition characterized in that it comprises the steps of: a) preparing an aqueous solution of at least one comb polymer of (meth)acrylic acid onto which is grafted a function of alkoxy and/or hydroxy polyalkylene glycol, b) preparing an aqueous emulsion of at least one acrylic thickener, c) mixing the aqueous solution from step a) with the aqueous emulsion from step b), possibly adding water, and in that one partially neutralizes the comb polymer during step a) and/or step c), in such a way as to obtain a mixture whose pH is between 5.5 and 6.8, preferentially between 5.8 and 6.3. The invention also concerns the product obtained and its utilization in a paper coating for paper, as a thickening agent for said coating and/or as a water retention agent for said coating and/or as an agent improving the brightness and/or the optical azuration of the paper coated with said coating.Type: GrantFiled: May 28, 2008Date of Patent: October 29, 2013Assignee: Coatex S.A.S.Inventors: Francois Dupont, Jean-Marc Suau
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Patent number: 8565695Abstract: A method and a device for determining the amplitude and the phase of an impedance connected on a transmission line, including a bidirectional coupler having a first line interposed on the transmission line and having a second line providing at its respective ends two measurement signals, and a balun having its respective differential-mode inputs receiving data representative of the measurement signals.Type: GrantFiled: July 21, 2009Date of Patent: October 22, 2013Assignee: STMicroelectronics (Tours) SASInventors: Benoît Bonnet, Sylvain Charley, François Dupont
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Publication number: 20130257559Abstract: A distributed-line directional coupler including: a first conductive line between first and second ports intended to convey a signal to be transmitted; and a second conductive line, coupled to the first one, between third and fourth ports, the second line being interrupted approximately at its middle, the two intermediary ends being connected to attenuators.Type: ApplicationFiled: May 31, 2013Publication date: October 3, 2013Inventors: François Dupont, Hilal Ezzeddine, Sylvain Charley
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Patent number: 8476987Abstract: A distributed-line directional coupler including: a first conductive line between first and second ports intended to convey a signal to be transmitted; and a second conductive line, coupled to the first one, between third and fourth ports, the second line being interrupted approximately at its middle, the two intermediary ends being connected to attenuators.Type: GrantFiled: November 18, 2008Date of Patent: July 2, 2013Assignee: STMicroelectronics (Tours) SASInventors: François Dupont, Hilal Ezzeddine, Sylvain Charley