Patents by Inventor Hassan Ait-Haddou
Hassan Ait-Haddou 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: 9724650Abstract: Disclosed are copolymers which are useful in hydrophilically modifying porous fluoropolymer supports. An example of the copolymers is: Also disclosed are a method of preparing such copolymers, a method of modifying porous fluoropolymer surfaces, and hydrophilic fluoropolymer porous membranes prepared therefrom. Also disclosed is a method of filtering fluids by the use of the hydrophilic fluoropolymer porous membranes.Type: GrantFiled: March 31, 2015Date of Patent: August 8, 2017Assignee: Pall CorporationInventors: Khaled Abdel-Hakim Helmy Aamer, Jian Qiu, Hassan Ait-Haddou
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Patent number: 9724649Abstract: Disclosed is a self-wetting porous membrane comprising an aromatic hydrophobic polymer such as polysulfone and a wetting agent comprising a copolymer of formula A-B or A-B-A, wherein A is a hydrophilic segment comprising a polymerized monomer of the formula (I): CH2?C(R1)(R2), wherein R1 and R2 are as described herein, and B is an aromatic hydrophobic polymeric segment, wherein segments B and A are linked through an amidoalkylthio group. Also disclosed is a method of preparing a self-wetting membrane comprising casting a solution containing an aromatic hydrophobic polymer and the wetting agent, followed by subjecting the cast solution to phase inversion. The self-wetting porous membrane finds use in hemodialysis, microfiltration, and ultrafiltration.Type: GrantFiled: June 25, 2015Date of Patent: August 8, 2017Assignee: Pall CorporationInventors: Marcin Stasiak, Hassan Ait-Haddou
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Patent number: 9718924Abstract: Disclosed is a block copolymer of the formula: A-B-A (I) or A-B (II), wherein block A is: (i) a polymer of allyl glycidyl ether or (ii) a polymer of allyl glycidyl ether wherein one more of the allyl groups have been replaced with 1,2-dihydroxypropyl group or a group of the formula: —(CH2)a—S—(CH2)b—X, wherein a, b, and X are defined herein. The block copolymers find use as wetting agents in the preparation of porous membranes from aromatic hydrophobic polymers such as polyethersulfone. Also disclosed are methods of preparing such block copolymers and porous membranes therefrom.Type: GrantFiled: June 30, 2014Date of Patent: August 1, 2017Assignee: Pall CorporationInventors: Hassan Ait-Haddou, Frank Onyemauwa
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Publication number: 20170197184Abstract: Disclosed are polymers suitable for hydrophilically modifying the surface of porous fluoropolymer supports, for example, a copolymer of the formula: Also disclosed are a method of preparing the polymers, a method of hydrophilically modifying porous fluoropolymer supports, hydrophilic fluoropolymer porous membranes prepared from the polymers, and a method of filtering fluids through the porous membranes.Type: ApplicationFiled: March 29, 2017Publication date: July 13, 2017Applicant: Pall CorporationInventors: Khaled Abdel-Hakim Helmy Aamer, Jian Qiu, Hassan Ait-Haddou
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Patent number: 9649603Abstract: Disclosed are copolymers suitable for hydrophilically modifying the surface of fluoropolymer membranes. An example of the copolymers is: Also disclosed are a method of preparing the copolymers, a method of hydrophilically modifying porous fluoropolymer supports, hydrophilic porous fluoropolymer membranes prepared from the copolymers, and a method of filtering fluids by the use of the hydrophilic porous fluoropolymer membranes.Type: GrantFiled: March 31, 2015Date of Patent: May 16, 2017Assignee: Pall CorporationInventors: Hassan Ait-Haddou, Khaled Abdel-Hakim Helmy Aamer, Jian Qiu, Frank Okezie Onyemauwa, Marcin Stasiak
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Patent number: 9643131Abstract: Disclosed are hydrophilic porous PTFE membranes comprising PTFE and an amphiphilic copolymer, for example, a copolymer of the formula: wherein m and n are as described herein. Also disclosed are a method of preparing hydrophilic porous PTFE membranes and a method of filtering fluids through such membranes.Type: GrantFiled: July 31, 2015Date of Patent: May 9, 2017Assignee: Pall CorporationInventors: Khaled Abdel-Hakim Helmy Aamer, Hassan Ait-Haddou, Marcin Stasiak, Amarnauth Singh
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Patent number: 9643130Abstract: Disclosed are copolymers which are useful in hydrophilically modifying fluoropolymer membranes. An example of the copolymers is: Also disclosed are a method of preparing such copolymers, a method of modifying fluoropolymer membrane surfaces, and hydrophilic fluoropolymer porous membranes prepared from the copolymers.Type: GrantFiled: March 31, 2015Date of Patent: May 9, 2017Assignee: Pall CorporationInventors: Hassan Ait-Haddou, Khaled Abdel-Hakim Helmy Aamer, Marcin Stasiak
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Patent number: 9636641Abstract: Disclosed are polymers suitable for hydrophilically modifying the surface of porous fluoropolymer supports, for example, a copolymer of the formula: Also disclosed are a method of preparing the polymers, a method of hydrophilically modifying porous fluoropolymer supports, hydrophilic fluoropolymer porous membranes prepared from the polymers, and a method of filtering fluids through the porous membranes.Type: GrantFiled: March 31, 2015Date of Patent: May 2, 2017Assignee: Pall CorporationInventors: Khaled Abdel-Hakim Helmy Aamer, Jian Qiu, Hassan Ait-Haddou
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Patent number: 9630151Abstract: Disclosed are copolymers suitable for hydrophilically modifying the surface of fluoropolymer porous membranes, for example, a copolymer of the formula: wherein R, n, m, and x are as defined herein. Also disclosed are a method of preparing the copolymers, a method of hydrophilically modifying porous fluoropolymer supports, and composite hydrophilic fluoropolymer porous membranes prepared from the copolymers.Type: GrantFiled: March 31, 2015Date of Patent: April 25, 2017Assignee: Pall CorporationInventors: Khaled Abdel-Hakim Helmy Aamer, Hassan Ait-Haddou
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Publication number: 20170028363Abstract: Disclosed are hydrophilic porous PTFE membranes comprising PTFE and an amphiphilic copolymer, for example, a copolymer of the formula: wherein m and n are as described herein. Also disclosed are a method of preparing hydrophilic porous PTFE membranes and a method of filtering fluids through such membranes.Type: ApplicationFiled: July 31, 2015Publication date: February 2, 2017Applicant: PALL CORPORATIONInventors: Khaled Abdel-Hakim Helmy AAMER, Hassan AIT-HADDOU, Marcin STASIAK, Amarnauth SINGH
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Publication number: 20170028362Abstract: Disclosed are hydrophilic porous PTFE membranes comprising PTFE and an amphiphilic copolymer of the formula (I): wherein Rf, Rh1, Rh2, Y, m, n, and o are as described herein. Also disclosed are a method of preparing hydrophilic porous PTFE membranes and a method of filtering fluids through such membranes.Type: ApplicationFiled: July 31, 2015Publication date: February 2, 2017Applicant: PALL CORPORATIONInventors: Marcin STASIAK, Hassan AIT-HADDOU, Frank O. ONYEMAUWA, Amarnauth SINGH
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Publication number: 20160375412Abstract: Disclosed is a self-wetting porous membrane comprising an aromatic hydrophobic polymer such as polysulfone and a wetting agent comprising a copolymer of formula A-B or A-B-A, wherein A is a hydrophilic segment comprising a polymerized monomer of the formula (I): CH2?C(R1)(R2), wherein R1 and R2 are as described herein, and B is polyethersulfone, wherein segments B and A are linked through an oxygen atom. Also disclosed is a method of preparing a self-wetting membrane comprising casting a solution containing an aromatic hydrophobic polymer and the wetting agent, followed by subjecting the cast solution to phase inversion. The self-wetting porous membrane finds use in hemodialysis, microfiltration, and ultrafiltration.Type: ApplicationFiled: June 25, 2015Publication date: December 29, 2016Applicant: PALL CORPORATIONInventors: Marcin STASIAK, Hassan AIT-HADDOU
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Publication number: 20160375409Abstract: Disclosed is a self-wetting porous membrane comprising an aromatic hydrophobic polymer such as polysulfone and a wetting agent comprising a copolymer of formula A-B or A-B-A, wherein A is a hydrophilic segment comprising a polymerized monomer of the formula (I): CH2?C(R1)(R2), wherein R1 and R2 are as described herein, and B is an aromatic hydrophobic polymeric segment, wherein segments B and A are linked through an amidoalkylthio group. Also disclosed is a method of preparing a self-wetting membrane comprising casting a solution containing an aromatic hydrophobic polymer and the wetting agent, followed by subjecting the cast solution to phase inversion. The self-wetting porous membrane finds use in hemodialysis, microfiltration, and ultrafiltration.Type: ApplicationFiled: June 25, 2015Publication date: December 29, 2016Applicant: PALL CORPORATIONInventors: Marcin STASIAK, Hassan AIT-HADDOU
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Publication number: 20160317982Abstract: Disclosed are copolymers suitable for hydrophilically modifying the surface of porous fluoropolymer supports, for example, a copolymer of the formula (I) or (II): wherein Rf, Rh, Ra, Y, m, and n are as described herein. Also disclosed are a method of preparing the copolymers, a method of hydrophilically modifying porous fluoropolymer supports, hydrophilic fluoropolymer porous membranes prepared from the polymers, and a method of filtering fluids through the porous membranes.Type: ApplicationFiled: April 30, 2015Publication date: November 3, 2016Applicant: PALL CORPORATIONInventors: Marcin STASIAK, Hassan AIT-HADDOU
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Publication number: 20160288060Abstract: Disclosed are copolymers suitable for hydrophilically modifying the surface of fluoropolymer porous membranes, for example, a copolymer of the formula: wherein R, n, m, and x are as defined herein. Also disclosed are a method of preparing the copolymers, a method of hydrophilically modifying porous fluoropolymer supports, and composite hydrophilic fluoropolymer porous membranes prepared from the copolymers.Type: ApplicationFiled: March 31, 2015Publication date: October 6, 2016Applicant: PALL CORPORATIONInventors: Khaled Abdel-Hakim Helmy AAMER, Hassan AIT-HADDOU
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Publication number: 20160288063Abstract: Disclosed are copolymers suitable for hydrophilically modifying the surface of fluoropolymer membranes. An example of the copolymers is: Also disclosed are a method of preparing the copolymers, a method of hydrophilically modifying porous fluoropolymer supports, hydrophilic porous fluoropolymer membranes prepared from the copolymers, and a method of filtering fluids by the use of the hydrophilic porous fluoropolymer membranes.Type: ApplicationFiled: March 31, 2015Publication date: October 6, 2016Applicant: PALL CORPORATIONInventors: Hassan AIT-HADDOU, Khaled Abdel-Hakim Helmy AAMER, Jian QIU, Frank Okezie ONYEMAUWA, Marcin STASIAK
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Publication number: 20160288061Abstract: Disclosed are polymers suitable for hydrophilically modifying the surface of porous fluoropolymer supports, for example, a copolymer of the formula: Also disclosed are a method of preparing the polymers, a method of hydrophilically modifying porous fluoropolymer supports, hydrophilic fluoropolymer porous membranes prepared from the polymers, and a method of filtering fluids through the porous membranes.Type: ApplicationFiled: March 31, 2015Publication date: October 6, 2016Applicant: PALL CORPORATIONInventors: Khaled Abdel-Hakim Helmy AAMER, Jian QIU, Hassan AIT-HADDOU
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Publication number: 20160288059Abstract: Disclosed are copolymers which are useful in hydrophilically modifying porous fluoropolymer supports. An example of the copolymers is: Also disclosed are a method of preparing such copolymers, a method of modifying porous fluoropolymer surfaces, and hydrophilic fluoropolymer porous membranes prepared therefrom. Also disclosed is a method of filtering fluids by the use of the hydrophilic fluoropolymer porous membranes.Type: ApplicationFiled: March 31, 2015Publication date: October 6, 2016Applicant: PALL CORPORATIONInventors: Khaled Abdel-Hakim Helmy AAMER, Jian QIU, Hassan AIT-HADDOU
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Publication number: 20160288062Abstract: Disclosed are copolymers which are useful in hydrophilically modifying fluoropolymer membranes. An example of the copolymers is: Also disclosed are a method of preparing such copolymers, a method of modifying fluoropolymer membrane surfaces, and hydrophilic fluoropolymer porous membranes prepared from the copolymers.Type: ApplicationFiled: March 31, 2015Publication date: October 6, 2016Applicant: PALL CORPORATIONInventors: Hassan AIT-HADDOU, Khaled Abdel-Hakim Helmy AAMER, Marcin STASIAK
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Patent number: 9394407Abstract: Disclosed are block copolymers of the formula A-B-A (I) or A-B (II), comprising blocks A and B, wherein block A is a hydrophilic polymeric segment comprising polyglycerol and block B is an aromatic hydrophobic polymeric segment. The block copolymers find use as wetting agents in the preparation of porous membranes from aromatic hydrophobic polymers such as polyethersulfone.Type: GrantFiled: June 30, 2014Date of Patent: July 19, 2016Assignee: Pall CorporationInventors: Hassan Ait-Haddou, Frank Onyemauwa