Patents by Inventor Shaikh Asrof Ali
Shaikh Asrof Ali 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: 9120094Abstract: A symmetrically substituted cationic monomer and its corresponding cationic polyelectrolyte (CPE) (+) bearing two identical (diethoxyphosphoryl)propyl pendent groups on repeating pyrrolidinium units. Phosphonate ester hydrolysis in (CPE) (+) forms a pH-responsive cationic polyacid (CPA) (+). The (CPA) (+) is converted under pH-induced transformation into a polyzwitterion acid (±) (PZA) or a polyzwitterion/anion (±?) (PZAN) or a polyzwitterion/dianion (±=) (PZDAN) or a polyzwitterion/trianion (±?) (PZTAN).Type: GrantFiled: December 23, 2013Date of Patent: September 1, 2015Assignees: King Fahd University of Petroleum and Minerals, King Abdulaziz City for Science and TechnologyInventors: Shaikh Asrof Ali, Shamsuddeen Abdullahi Haladu, Hasan Ali Al-Muallem
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Patent number: 9099711Abstract: The fuel cell membrane is a polymer electrolyte (or polyelectrolyte) membrane formed from a blend of sulfonated poly(ether ether ketone) (SPEEK) and phosphonated polysulfone in the ester form (PPSU-E), where the sulfonated poly(ether ether ketone) and the phosphonated polysulfone each form about 50 wt % of the polyelectrolyte membrane. The polyelectrolyte membrane is made by dissolving a mixture of SPEEK and PPSU in the ester form (PPSU-E) in dimethylacetamide (DMAc) at room temperature to form a solution. The SPEEK/PPSU-E mixture has a concentration of between about 10 wt % and about 15 wt % in the solution. The solution is then stirred and left to release air bubbles therefrom. The DMAc is then evaporated from the solution, leaving the resultant polyelectrolyte membrane, which is then washed and dried.Type: GrantFiled: September 11, 2013Date of Patent: August 4, 2015Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: Nedal Y. Abu-Thabit, Sayed Mohammed Javaid Zaidi, Shaikh Asrof Ali, Khaled Mezghani
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Publication number: 20150183933Abstract: A zwitterionic monomer and corresponding cyclopolymerized polyzwitterion (±) (PZ) (i.e. poly(Z-alt-SO2). Phosophonate ester hydroloysis in PZ gave a pH-responsive polyzwitterionic acid (±) (PZA). The PZA under pH-induced transformation was converted into polyzwitterion/anion (±?) (PZAN) and polyzwitterion/dianion (±=) (PZDAN).Type: ApplicationFiled: December 30, 2013Publication date: July 2, 2015Applicants: King Abdulaziz City for Science and Technology, King Fahd University of Petroleum and MineralsInventors: Shaikh Asrof Ali, Shamsuddeen Abdullahi Haladu
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Publication number: 20150183903Abstract: The polyzwitterionic acid antiscalant is an antiscalant for use in desalination plants and the like for inhibiting CaSO4 and SO42? scale precipitation. The polyzwitterionic acid (PZA) antiscalant has the following structural formula: In order to make the PZA antiscalant, N-carboethoxymethyl-3-(N,N-diallylamino)propanesulfonate, a zwitterionic monomer, is cyclopolymerized in aqueous solution using tert-butyl hydroperoxide (TBHP) to make an intermediate polyzwitterion (PZ). Acidic hydrolysis of the ester groups of the PZ is performed to produce the PZA antiscalant. Evaluation of the antiscalant properties of the PZA antiscalant using concentrated brines revealed that the PZA antiscalant, at a concentration of 10 ppm, is very effective in inhibiting the formation of calcium sulfate scale, particularly in reverse osmosis plants.Type: ApplicationFiled: December 26, 2013Publication date: July 2, 2015Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: SHAMSUDDEEN ABDULLAHI HALADU, SHAIKH ASROF ALI
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Publication number: 20150174572Abstract: A symmetrically substituted cationic monomer and its corresponding cationic polyelectrolyte (CPE) (+) bearing two identical (diethoxyphosphoryl)propyl pendent groups on repeating pyrrolidinium units. Phosphonate ester hydrolysis in (CPE) (+) forms a pH-responsive cationic polyacid (CPA) (+). The (CPA) (+) is converted under pH-induced transformation into a polyzwitterion acid (±) (PZA) or a polyzwitterion/anion (±?) (PZAN) or a polyzwitterion/dianion (±=) (PZDAN) or a polyzwitterion/trianion (±?) (PZTAN).Type: ApplicationFiled: December 23, 2013Publication date: June 25, 2015Applicants: King Abdulaziz City for Science and Technology, King Fahd University of Petroleum and MineralsInventors: Shaikh Asrof ALI, Shamsuddeen Abdullahi HALADU, Hasan Ali AL-MUALLEM
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Patent number: 9051197Abstract: The cross-linked polyaminodiphosphonate for the removal of metal ions from wastewater is a cross-linked anionic polyelectrolyte synthesized via cyclocopolymerization of diallylaminomethyldiphosphonic acid and 1,1,4,4-tetraallylpiperazinium dichloride (10 mol %), a cross-linker, in the presence of tert-butylhydroperoxide in aqueous solution at 85° C., followed by treatment with NaOH. The cross-linked polyaminodiphosphonate may be used to remove copper and cadmium ions from wastewater. The adsorption process is spontaneous and endothermic in nature, with negative and positive values for ?G and ?H, respectively. The efficiency of Cu2+ and Cd2+ removal by the cross-linked polyaminodiphosphonate was found to be 96.8% and 93.8%, respectively.Type: GrantFiled: September 9, 2013Date of Patent: June 9, 2015Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: Othman Charles Sadeq Othman Al Hamouz, Shaikh Asrof Ali
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Publication number: 20150144569Abstract: The poly(zwitterion-alt-sulfur dioxide) copolymer includes a structural unit having the structural formula: The copolymer is made by cocyclopolymerizing 3-(N,N-diallyl,N-carboethoxymethylammonio)propanesulfonate with sulfur dioxide to obtain an intermediate polyzwitterion (PZ) copolymer, which is hydrolyzed to form the copolymer. The copolymer may be converted to a poly(electrolyte-zwitterion) by treatment with a base, such as sodium hydroxide.Type: ApplicationFiled: November 26, 2013Publication date: May 28, 2015Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: Shaikh Asrof ALI, Shamsuddeen Abdullahi HALADU
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Publication number: 20150144162Abstract: A zwitterionic monomer and corresponding cyclopolymerized polyzwitterion (±) (PZ) containing, on each repeating unit, both phosphonate and sulfonate functionalities. Phosphonate ester hydrolysis in PZ gave a pH-responsive polyzwitterionic acid (±) (PZA). The PZA under pH-induced transformation was converted into polyzwitterion/anion (±?) (PZAN) and polyzwitterion/dianion (±=) (PZDAN).Type: ApplicationFiled: November 27, 2013Publication date: May 28, 2015Applicants: King Abdulaziz City for Science and Technology, King Fahd University Petroleum and MineralsInventors: Shaikh Asrof ALI, Shamsuddeen Abdullahi Haladu
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Publication number: 20150144556Abstract: The antiscalant compound is a dianionic polyelectrolyte (DAPE), namely, poly[disodium 3-(N,N-diallylamino)propanephosphonate]. The cationic polyelectrolyte (CPE) polydiallyl(diethylphosphonato)propylammonium chloride is synthesized by cyclopolymerization of the monomer. The CPE contains a pendant having a three-carbon spacer separating the diethylphosphonate and NH+. Upon acidic hydrolysis of the phosphonate esters, the CPE was converted into a pH-responsive polyzwitterionic acid (PZA), poly[3-(N,N-diallylammonio)propanephosphonic acid], which was converted to DAPE poly[disodium 3-(N,N-diallylamino)propanephosphonate] and to a zwitterionic/anionic polyelectrolyte (ZAPE) poly[sodium 3-(N,N-diallylammonio)propanephosphonate]. The solution properties of the polymers were correlated to the structurally similar polyzwitterion (PZ) having monoethylphosphonate and NH+ groups.Type: ApplicationFiled: November 26, 2013Publication date: May 28, 2015Applicants: KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY, KING FAHD UNIVERSITY OF PETROLEUM AND MENERALSInventors: SHAIKH ASROF ALI, IZZAT WAJIH KAZI, FAIZUR RAHMAN
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Publication number: 20150073097Abstract: The cross-linked polyaminodiphosphonate for the removal of metal ions from wastewater is a cross-linked anionic polyelectrolyte synthesized via cyclocopolymerization of diallylaminomethyldiphosphonic acid and 1,1,4,4-tetraallylpiperazinium dichloride (10 mol %), a cross-linker, in the presence of tert-butylhydroperoxide in aqueous solution at 85° C., followed by treatment with NaOH. The cross-linked polyaminodiphosphonate may be used to remove copper and cadmium ions from wastewater. The adsorption process is spontaneous and endothermic in nature, with negative and positive values for ?G and ?H, respectively. The efficiency of Cu2+ and Cd2+ removal by the cross-linked polyaminodiphosphonate was found to be 96.8% and 93.8%, respectively.Type: ApplicationFiled: September 9, 2013Publication date: March 12, 2015Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: OTHMAN CHARLES SADEQ OTHMAN AL HAMOUZ, SHAIKH ASROF ALI
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Publication number: 20150072252Abstract: The fuel cell membrane is a polymer electrolyte (or polyelectrolyte) membrane formed from a blend of sulfonated poly(ether ether ketone) (SPEEK) and phosphonated polysulfone in the ester form (PPSU-E), where the sulfonated poly(ether ether ketone) and the phosphonated polysulfone each form about 50 wt % of the polyelectrolyte membrane. The polyelectrolyte membrane is made by dissolving a mixture of SPEEK and PPSU in the ester form (PPSU-E) in dimethylacetamide (DMAc) at room temperature to form a solution. The SPEEK/PPSU-E mixture has a concentration of between about 10 wt % and about 15 wt % in the solution. The solution is then stirred and left to release air bubbles therefrom. The DMAc is then evaporated from the solution, leaving the resultant polyelectrolyte membrane, which is then washed and dried.Type: ApplicationFiled: September 11, 2013Publication date: March 12, 2015Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: NEDAL Y. ABU-THABIT, SAYED MOHAMMED JAVAID ZAIDI, SHAIKH ASROF ALI, KHALED MEZGHANI
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Patent number: 8937104Abstract: The cross-linked polyzwitterion/anion for the removal of strontium from aqueous solutions is a polyzwitterion having the following structure: and the corresponding anion formed by treating the polyzwitterion with a base, e.g., sodium hydroxide. The cross-linked polyzwitterion/anion (CPZA) was prepared using Butler's cyclopolymerization protocol. The CPZA resin was found to have a very good adsorption capacity for Sr2+ ions at low concentrations. The relatively strong rapid initial adsorption of 83% Sr2+ ions was followed by slower adsorption of the remaining 17%, which was described by an intraparticle diffusion model. The adsorption followed the Lagergren second-order kinetic model, and Temkin as well as Freundlich isotherm models. The negative ?Gs and ?H ensured the spontaneity and the exothermic nature of the adsorption process. The excellent adsorption and desorption efficiencies implied the efficacy of the resin in removing (as well as recovering) the metal ions from aqueous solution.Type: GrantFiled: April 29, 2013Date of Patent: January 20, 2015Assignees: King Fahd University of Petroleum and Minerals, King Abdulaziz City for Science and TechnologyInventors: Shaikh Asrof Ali, Shamsuddeen Abdullahi Haladu
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Publication number: 20150018475Abstract: The aqueous two phase systems (ATPS) contain partly urethanized PVA (polyvinyl alcohol) and hydrophobically modified cyclocopolymers formed from the monomers diallylammonioethanoate, 0-3 mol % dodecyldiallylammonium chloride and sulphur dioxide, the copolymers having varying proportions of polybetaine (PB) and anionic polyelectrolyte (APE) fractions. The aqueous two-phase systems are useful in the separation and purification of biomaterials.Type: ApplicationFiled: July 15, 2013Publication date: January 15, 2015Inventor: SHAIKH ASROF ALI
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Patent number: 8906972Abstract: An aqueous two-phase system (ATPS) containing a poly(oxyethylene) (POE) and a poly[sodium (diallylamino)alkylphosphonate-alt-sulfur dioxide] form a pH-responsive dianionic polyelectrolyte (DAPE). The two polymers form ATPS's at low concentrations, where the addition of HCl changes the charge types and their densities on the polymer chains.Type: GrantFiled: December 27, 2013Date of Patent: December 9, 2014Assignees: King Fahd University of Petroleum and Minerals, King Abdulaziz City of Science and TechnologyInventors: Othman Charles Sadeq Al-Hamouz, Shaikh Asrof Ali
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Patent number: 8895633Abstract: The cross-linked polyaminocarboxylates for the removal of metal ions from aqueous solutions of the present invention are cross-linked anionic polyelectrolytes CAPE 6 and CAPE 9, containing pH-responsive amino acid residues. The cross-linked anionic polyelectrolytes have been synthesized via cycloco-polymerization and ter-polymerization of a diallylammonioethanoate monomer (90 mol %) and a cross-linker, 1,1,4,4-tetraallylpiperazinium dichloride (10 mol %) in the absence of SO2 (CAPE 6) and in the presence of SO2 (CAPE 9), respectively. For the sorbents CAPE 6 and CAPE 9, the efficiency of Cu2+ removal at an initial metal concentration of 200 ppb was found to be 77.5% and 99.4%, respectively. Treatment of real wastewater samples spiked with Cu2+ ions showed the excellent ability of the cross-linked anionic polyelectrolytes to adsorb metal ions.Type: GrantFiled: March 4, 2013Date of Patent: November 25, 2014Assignee: King Fahd University of Petroleum and MineralsInventors: Othman Charles Sadeq Othman Al Hamouz, Shaikh Asrof Ali, Nouri Mohammed Hassan
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Publication number: 20140323685Abstract: The cross-linked polyzwitterion/anion for the removal of strontium from aqueous solutions is a polyzwitterion having the following structure: and the corresponding anion formed by treating the polyzwitterion with a base, e.g., sodium hydroxide. The cross-linked polyzwitterion/anion (CPZA) was prepared using Butler's cyclopolymerization protocol. The CPZA resin was found to have a very good adsorption capacity for Sr2+ ions at low concentrations. The relatively strong rapid initial adsorption of 83% Sr2+ ions was followed by slower adsorption of the remaining 17%, which was described by an intraparticle diffusion model. The adsorption followed the Lagergren second-order kinetic model, and Temkin as well as Freundlich isotherm models. The negative ?Gs and ?H ensured the spontaneity and the exothermic nature of the adsorption process. The excellent adsorption and desorption efficiencies implied the efficacy of the resin in removing (as well as recovering) the metal ions from aqueous solution.Type: ApplicationFiled: April 29, 2013Publication date: October 30, 2014Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: SHAIKH ASROF ALI, SHAMSUDDEEN ABDULLAHI HALADU
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Patent number: 8871822Abstract: The cross-linked polyphosphonate-sulfone composition for removal of metal ions from wastewater relates to a cross-linked anionic polyelectrolyte polymer for the removal of metal ions, such as lead (Pb2+) and copper (Cu2+) ions, from wastewater and the like. The cross-linked anionic polyelectrolyte polymer has the formula: The cross-linked anionic polyelectrolyte polymer is made by cyclopolymerization of diallylaminomethylphosphonic acid, 1,1,4,4-tetraallylpiperazinium dichloride (a cross-linker), and sulfur dioxide in the presence of AIBN (an initiator) in DMSO at 65° C. to form a cross-linked polyzwitterionic acid (CPZA). The CPZA is then treated with base (such as sodium hydroxide) to form the cross-linked anionic polyelectrolyte polymer having the formula shown above.Type: GrantFiled: October 15, 2012Date of Patent: October 28, 2014Assignee: King Fahd University of Petroleum and MineralsInventors: Shaikh Asrof Ali, Othman Charles Sadeq Othman Al Hamouz
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Publication number: 20140107236Abstract: The cross-linked polyphosphonate-sulfone composition for removal of metal ions from wastewater relates to a cross-linked anionic polyelectrolyte polymer for the removal of metal ions, such as lead (Pb2+) and copper (Cu2+) ions, from wastewater and the like. The cross-linked anionic polyelectrolyte polymer has the formula: The cross-linked anionic polyelectrolyte polymer is made by cyclopolymerization of diallylaminomethylphosphonic acid, 1,1,4,4-tetraallylpiperazinium dichloride (a cross-linker), and sulfur dioxide in the presence of AIBN (an initiator) in DMSO at 65° C. to form a cross-linked polyzwitterionic acid (CPZA). The CPZA is then treated with base (such as sodium hydroxide) to form the cross-linked anionic polyelectrolyte polymer having the formula shown above.Type: ApplicationFiled: October 15, 2012Publication date: April 17, 2014Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: SHAIKH ASROF ALI, OTHMAN CHARLES SADEQ OTHMAN AL HAMOUZ
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Patent number: 8614260Abstract: The cross-linked polyphosphonate composition for the removal of metal ions from wastewater is a cross-linked anionic polyelectrolyte polymer having the formula: The cross-linked anionic polyelectrolyte is made by cyclocopolymerizing diallylaminomethylphosphonic acid and 1,1,4,4-tetraallylpiperazinium dichloride (a cross-linker) to form a cross-linked polyzwitterionic acid (CPZA). The CPZA is then treated with a base, such as sodium hydroxide, to form a cross-linked anionic polyelectrolyte polymer having the above formula. The composition may be used to remove heavy metal ions, such as Cu2+ and Pb2+, from wastewater.Type: GrantFiled: October 15, 2012Date of Patent: December 24, 2013Assignee: King Fahd University of Petroleum and MineralsInventors: Othman Charles Sadeq Othman Al Hamouz, Shaikh Asrof Ali