Patents by Inventor MOHAMMED AL-HASHIMI
MOHAMMED AL-HASHIMI 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: 20220332924Abstract: Cross-linked polymer nanoparticles were designed and synthesized with cyclodextrins as the starting monomer. These nanoparticles display exemplary adsorption properties in terms of capacity and selectivity, which comes from the synthetic design. The nanoparticles are also highly robust for various practical adsorption applications. The new synthetic method of these nanoparticle materials involves the reaction of cyclodextrin monomers through an emulsion polymerization approach. The size of the nanoparticles can be tuned easily.Type: ApplicationFiled: April 8, 2022Publication date: October 20, 2022Inventors: Lei Fang, Bailey Phillips, Sarbajit Banerjee, Mohammed Al-Hashimi, Joseph Handy, Alexander J. Kalin
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Publication number: 20220212147Abstract: Methods for preparation of a carbon membrane include providing a solution comprising a diacetyl biphenyl monomer and an alkylsulfonic acid. The solution is treated under such conditions that an aldol condensation reaction occurs so as to produce a porous polymer network. The porous polymer network is treated under such conditions that a Scholl reaction occurs.Type: ApplicationFiled: May 10, 2020Publication date: July 7, 2022Inventors: Lei Fang, Sai Che, Chenxu Wang, Mohammed Al-Hashimi, Sarbajit Banerjee
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Patent number: 11196003Abstract: The organic semiconductor polymers relate to polymers containing an indolo-naphthyridine-6,13-dione thiophene (INDT) chromophore. The organic semiconductor polymers are formed by polymerizing INDT monomer with thiophene to obtain a conjugated polymer of the chromophore linked by thiophene monomers (INDT-T), with phenyl to obtain a conjugated polymer of the chromophore linked by phenyl monomers (INDT-P), with selenophene to obtain a conjugated polymer of the chromophore linked by selenophene monomers (INDT-S), or with benzothiadazole to obtain a conjugated polymer of the chromophore linked by benzothiadazole monomers (INDT-BT).Type: GrantFiled: December 13, 2019Date of Patent: December 7, 2021Assignee: QATAR FOUNDATION FOR EDUCATION, SCIENCE AND COMMUNITY DEVELOPMENTInventors: Hugo Bronstein, Mohammed Al-Hashimi, Tobin J. Marks, Kealan Fallon
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Patent number: 10927214Abstract: The method of making a pyrrolo bisthiazole homopolymer starts with dissolving a dibrominated pyrrolo[3,2-d:4,5-d?]bisthiazole monomer having the formula: where R is an alkyl group, in anhydrous tetrahydrofuran (THF). Then, the solvated monomer is treated with 1 equivalent of a Turbo-Grignard reagent complex having the formula iPrMgCl.LiCl at 0° C. to form a reaction mixture. The reaction mixture is stirred for 1 hour at room temperature, and after stirring, the reaction mixture is refluxed for 24 hours. A conjugated homopolymer product having the formula: where n is the number of repeating units of pyrrolo[3,2-d:4,5-d?]bisthiazole, is recovered from the reaction mixture. The PBTz-based homopolymers showed broad absorption from 450 to 850 nm in thin film and excellent photochemical and thermal stability, making the polymers suitable for lightweight, low cost plastic electronic devices.Type: GrantFiled: March 22, 2018Date of Patent: February 23, 2021Assignee: QATAR FOUNDATION FOR EDUCATION, SCIENCE AND COMMUNITY DEVELOPMENTInventors: Mohammed Al-Hashimi, Hugo Bronstein
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Publication number: 20200216604Abstract: A polypentenamer-silica composite can include a surface-modified silica compound and a polypentenamer chain grafted onto the surface-modified silica compound. The polypentenamer has physical properties similar to natural rubber. The polypentenamer-silica composite is recyclable. As such, the polypentenamer-silica composite can be used for manufacturing recyclable tires.Type: ApplicationFiled: June 15, 2018Publication date: July 9, 2020Applicant: QATAR FOUNDATION FOR EDUCATION, SCIENCE AND COMMUNITY DEVELOPMENTInventors: HASSAN SAID BAZZI, MOHAMMED AL-HASHIMI, ROBERT TUBA
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Publication number: 20200048783Abstract: The electrocatalyst for hydrogen evolution reaction includes nanosheets of molybdenum disulfide (MoS2) deposited on a carbon fiber substrate. The catalyst is formed in stepwise fashion by chemical vapor deposition of nanosheets of MoO3 onto the substrate, then reducing the MoO3 to nanosheets of MoO2 using sublimed sulfur, then by reaction of sulfur vapor with the MoO2 to form nanosheets of MoS2 on the carbon fiber substrate. The catalyst is multifaceted, having a large density of edges providing catalytically active sites for the hydrogen evolution reaction. The activity of the catalyst is enhanced by coating the catalyst with spherical fullerenes (nC60).Type: ApplicationFiled: March 8, 2018Publication date: February 13, 2020Applicant: QATAR FOUNDATION FOR EDUCATION, SCIENCE AND COMMUNITY DEVELOPMENTInventors: YUN-CHUK CHOI, MOHAMMED AL-HASHIMI, LEI FANG, SARBAJIT BANERJEE
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Patent number: 10547005Abstract: The organic semiconductor polymers relate to polymers containing an indolo-naphthyridine-6,13-dione thiophene (INDT) chromophore. The organic semiconductor polymers are formed by polymerizing INDT monomer with thiophene to obtain a conjugated polymer of the chromophore linked by thiophene monomers (INDT-T), with phenyl to obtain a conjugated polymer of the chromophore linked by phenyl monomers (INDT-P), with selenophene to obtain a conjugated polymer of the chromophore linked by selenophene monomers (INDT-S), or with benzothiadazole to obtain a conjugated polymer of the chromophore linked by benzothiadazole monomers (INDT-BT).Type: GrantFiled: March 13, 2017Date of Patent: January 28, 2020Assignee: Qatar Foundation for Education, Science and Community DevelopmentInventors: Hugo Bronstein, Mohammed Al-Hashimi, Tobin J. Marks, Kealan Fallon
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Publication number: 20190218337Abstract: The method of making a pyrrolo bisthiazole homopolymer starts with dissolving a dibrominated pyrrolo[3,2-d:4,5-d?]bisthiazole monomer having the formula: where R is an alkyl group, in anhydrous tetrahydrofuran (THF). Then, the solvated monomer is treated with 1 equivalent of a Turbo-Grignard reagent complex having the formula iPrMgCl.LiCl at 0° C. to form a reaction mixture. The reaction mixture is stirred for 1 hour at room temperature, and after stirring, the reaction mixture is refluxed for 24 hours. A conjugated homopolymer product having the formula: where n is the number of repeating units of pyrrolo[3,2-d:4,5-d?]bisthiazole, is recovered from the reaction mixture. The PBTz-based homopolymers showed broad absorption from 450 to 850 nm in thin film and excellent photochemical and thermal stability, making the polymers suitable for lightweight, low cost plastic electronic devices.Type: ApplicationFiled: March 22, 2018Publication date: July 18, 2019Inventors: MOHAMMED AL-HASHIMI, HUGO BRONSTEIN
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Patent number: 10273329Abstract: The organic semiconductor polymers relates to the synthesis of a carbazole-based ladder polymer. The synthesis of the ladder polymer includes forming a precursor conjugated polymer by Suzuki step growth polymerization of 2,7-dibromocarbazole with 1,4-dibromo-2,5-divinylbenzene, followed by end capping with 2-bromostyrene and 2-vinyl-phenylboronic acid. Then, the pendent vinyl groups are closed by ring-closing olefin metathesis to obtain the ladder polymer.Type: GrantFiled: March 13, 2017Date of Patent: April 30, 2019Inventors: Lei Fang, Jongbok Lee, Mohammed Al-Hashimi
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Publication number: 20180339286Abstract: The polymer-supported chelating agent is polyisobutylene having a thiol-thioether terminal group. The polymer-supported chelating agent is made by reaction of the terminal carbon double bond of polyisobutylene with 1,2-ethanedithiol in a one-step click reaction, resulting in PIB functionalized with a thiol-thioether sequestering group. In use, the polymer-supported chelating agent is added to a biphasic solvent system containing a transition metal in solution for removal of the transition metal by liquid/liquid extraction. The transition metal is chelated or sequestered by the chelating agent and removed in a nonpolar organic phase, such as heptane.Type: ApplicationFiled: May 15, 2018Publication date: November 29, 2018Inventors: HASSAN SAID BAZZI, MOHAMMED AL-HASHIMI, DAVID E. BERGBREITER, DALILA CHOUIKHI
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Publication number: 20180287066Abstract: The organic semiconductor polymers relate to polymers containing an indolo-naphthyridine-6,13-dione thiophene (INDT) chromophore. The organic semiconductor polymers are formed by polymerizing INDT monomer with thiophene to obtain a conjugated polymer of the chromophore linked by thiophene monomers (INDT-T), with phenyl to obtain a conjugated polymer of the chromophore linked by phenyl monomers (INDT-P), with selenophene to obtain a conjugated polymer of the chromophore linked by selenophene monomers (INDT-S), or with benzothiadazole to obtain a conjugated polymer of the chromophore linked by benzothiadazole monomers (INDT-BT).Type: ApplicationFiled: March 13, 2017Publication date: October 4, 2018Inventors: HUGO BRONSTEIN, MOHAMMED AL-HASHIMI, TOBIN J. MARKS, KEALAN FALLON
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Publication number: 20180282473Abstract: The method of making a pyrrolo bisthiazole homopolymer starts with dissolving a dibrominated pyrrolo[3,2-d:4,5-d?]bisthiazole monomer having the formula: where R is an alkyl group, in anhydrous tetrahydrofuran (THF). Then, the solvated monomer is treated with 1 equivalent of a Turbo-Grignard reagent complex having the formula iPrMgCl.LiCl at 0° C. to form a reaction mixture. The reaction mixture is stirred for 1 hour at room temperature, and after stirring, the reaction mixture is refluxed for 24 hours. A conjugated homopolymer product having the formula: where n is the number of repeating units of pyrrolo[3,2-d:4,5-d?]bisthiazole, is recovered from the reaction mixture. The PBTz-based homopolymers showed broad absorption from 450 to 850 nm in thin film and excellent photochemical and thermal stability, making the polymers suitable for lightweight, low cost plastic electronic devices.Type: ApplicationFiled: March 22, 2018Publication date: October 4, 2018Inventors: MOHAMMED AL-HASHIMI, HUGO BRONSTEIN
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Publication number: 20170260324Abstract: The organic semiconductor polymers relates to the synthesis of a carbazole-based ladder polymer. The synthesis of the ladder polymer includes forming a precursor conjugated polymer by Suzuki step growth polymerization of 2,7-dibromocarbazole with 1,4-dibromo-2,5-divinylbenzene, followed by end capping with 2-bromostyrene and 2-vinyl-phenylboronic acid. Then, the pendent vinyl groups are closed by ring-closing olefin metathesis to obtain the ladder polymer.Type: ApplicationFiled: March 13, 2017Publication date: September 14, 2017Inventors: LEI FANG, JONGBOK LEE, MOHAMMED AL-HASHIMI