Patents by Inventor Safwat E. Tadros
Safwat E. Tadros 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: 10196494Abstract: In one embodiment, a polymeric sheet, comprising: a foamed layer comprising a polymeric material, wherein the polymeric material has a Tg of greater than or equal to 100° C.; and wherein the sheet has a weight reduction of 10% to 60%, as compared to a solid sheet of the same geometry and size formed from the same polymeric material. The sheet, at the thickness of 1.0 mm, has a smoke density of less than or equal to 200 particles after four minutes of burning according to ASTM E662-06. The sheet is thermoformable.Type: GrantFiled: February 21, 2014Date of Patent: February 5, 2019Assignee: SABIC GLOBAL TECHNOLOGIES B.V.Inventors: Constantin Donea, Safwat E. Tadros, Hendrik Cornelis Jacobus de Nooijer, Christianus Johannes Jacobus Maas, Michael M. Laurin, Sandeep Dhawan, Shuailei Ma, Michael J. Davis, Jian Zhou, Yuanqing He
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Publication number: 20160002429Abstract: In one embodiment, a polymeric sheet, comprising: a foamed layer comprising a polymeric material, wherein the polymeric material has a Tg of greater than or equal to 100° C.; and wherein the sheet has a weight reduction of 10% to 60%, as compared to a solid sheet of the same geometry and size formed from the same polymeric material. The sheet, at the thickness of 1.0 mm, has a smoke density of less than or equal to 200 particles after four minutes of burning according to ASTM E662-06. The sheet is thermoformable.Type: ApplicationFiled: February 21, 2014Publication date: January 7, 2016Inventors: Constantin Donea, Safwat E. Tadros, Hendrik Cornelis Jacobus de Nooijer, Christianus Johannes Jacobus Maas, Michael M. Laurin, Sandeep Dhawan, Shuailei Ma, Michael J. Davis, Jian Zhou, Yuanqing He
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Patent number: 8859091Abstract: Disclosed herein is a polymeric sheet that includes a first polymeric layer; and a second foamed layer; the first polymeric layer being in operative communication with the second foamed layer; the polymeric sheet having a percent light transmission as measured according to ASTM D 1003 of about 3% to about 80% at a thickness of greater than or equal to about 1,000 micrometers. Disclosed herein too is a method that includes disposing a first polymeric layer upon a second foamed layer to form a polymeric sheet; the first polymeric layer being in operative communication with the second foamed layer; the polymeric sheet having a percent light transmission as measured according to ASTM D 1003 of about 3% to about 80% at a thickness of greater than or equal to about 1,000 micrometers.Type: GrantFiled: November 20, 2008Date of Patent: October 14, 2014Assignee: Sabic Global Technologies B.V.Inventor: Safwat E. Tadros
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Patent number: 8283390Abstract: Disclosed herein is a foam that includes a polysiloxane block copolymer; the polysiloxane block copolymer including a first block that comprises a polysiloxane block and a second block that includes an organic polymer; the second block not containing a polysiloxane; the polysiloxane block being about 5 to about 45 repeat units; the foam having average pore sizes of less than or equal to about 100 nanometers.Type: GrantFiled: September 10, 2009Date of Patent: October 9, 2012Assignee: Sabic Innovative Plastics IP B.V.Inventors: Chinniah Thiagarajan, Bernd Jansen, Santhosh Kumar Rajendran, Vauhini RM, Safwat E. Tadros
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Publication number: 20110060067Abstract: Disclosed herein is a foam that includes a polysiloxane block copolymer; the polysiloxane block copolymer including a first block that comprises a polysiloxane block and a second block that includes an organic polymer; the second block not containing a polysiloxane; the polysiloxane block being about 5 to about 45 repeat units; the foam having average pore sizes of less than or equal to about 100 nanometers.Type: ApplicationFiled: September 10, 2009Publication date: March 10, 2011Applicant: SABIC INNOVATIVE PLASTICS IP B.VInventors: Chinniah Thiagarajan, Bernd Jansen, Santhosh Kumar Rajendran, Vauhini RM, Safwat E. Tadros
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Publication number: 20100124653Abstract: Disclosed herein is a polymeric sheet that includes a first polymeric layer; and a second foamed layer; the first polymeric layer being in operative communication with the second foamed layer; the polymeric sheet having a percent light transmission as measured according to ASTM D 1003 of about 3% to about 80% at a thickness of greater than or equal to about 1,000 micrometers. Disclosed herein too is a method that includes disposing a first polymeric layer upon a second foamed layer to form a polymeric sheet; the first polymeric layer being in operative communication with the second foamed layer; the polymeric sheet having a percent light transmission as measured according to ASTM D 1003 of about 3% to about 80% at a thickness of greater than or equal to about 1,000 micrometers.Type: ApplicationFiled: November 20, 2008Publication date: May 20, 2010Applicant: SABIC INNOVATIVE PLASTICS IP B.V.Inventor: Safwat E. Tadros
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Patent number: 7297409Abstract: A weatherable composition comprising an upper layer that comprises a polymer system consisting essentially of a cycloaliphatic polyester resin, and an additive composition comprising an hindered amine light stabilizer and a low volatility, hydroxyphenyl triazine or pyrimidine UV absorber; an intermediate layer that comprises a polymer system consisting essentially of a cycloaliphatic polyester, and optionally, an additive composition comprising TiO2, dyes, pigments, and special effects additives; and a polymeric substrate, wherein the intermediate layer is disposed between and in intimate contact with the upper layer and the substrate. The composition finds utility in articles such as automotive parts.Type: GrantFiled: October 12, 2001Date of Patent: November 20, 2007Assignee: Sabic Innovative Plastics IP BVInventors: Safwat E. Tadros, Peter H. Th. Vollenberg
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Patent number: 7090926Abstract: A weatherable composition comprising an upper layer that comprises an aliphatic polyamide resin and an additive composition comprising an hindered amine light stabilizer and a hydroxyphenyl triazine or pyrimidine UV absorber; an intermediate layer that comprises a polymer system compatible with polymer in the upperlayer, and optionally, an additive composition comprising TiO2, dyes, pigments, and special effects additives; and a polymeric substrate, wherein the intermediate layer is disposed between and in intimate contact with the upper layer and the substrate. The composition finds utility in articles such as automotive parts.Type: GrantFiled: October 2, 2002Date of Patent: August 15, 2006Assignee: General Electric CompanyInventors: Peter H. Th. Vollenberg, Sandeep Dhawan, Kyle P. Starkey, Safwat E. Tadros
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Patent number: 6699416Abstract: A method for processing an impact modifier material having a core and shell molecular structure comprises working the impact modifier material in a mild extruder to a state such that at least a portion of the shells of the impact modifier material fuse together to form an impact modifier material output, and pelletizing the impact modifier output. The output is preferably pellitized, and produces pellets having a narrow size distribution.Type: GrantFiled: March 21, 2001Date of Patent: March 2, 2004Assignee: General Electric CompanyInventor: Safwat E. Tadros
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Publication number: 20030124358Abstract: A weatherable composition comprising an upper layer that comprises an aliphatic polyamide resin and an additive composition comprising an hindered amine light stabilizer and a hydroxyphenyl triazine or pyrimidine UV absorber; an intermediate layer that comprises a polymer system compatible with polymer in the upperlayer, and optionally, an additive composition comprising TiO2, dyes, pigments, and special effects additives; and a polymeric substrate, wherein the intermediate layer is disposed between and in intimate contact with the upper layer and the substrate. The composition finds utility in articles such as automotive parts.Type: ApplicationFiled: October 2, 2002Publication date: July 3, 2003Applicant: General Electric CompanyInventors: Peter H. Th. Vollenberg, Sandeep Dhawan, Kyle P. Starkey, Safwat E. Tadros
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Publication number: 20030102588Abstract: A method for processing an impact modifier material having a core and shell molecular structure comprises working the impact modifier material in a mild extruder to a state such that at least a portion of the shells of the impact modifier material fuse together to form an impact modifier material output, and pelletizing the impact modifier output. The output is preferably pellitized, and produces pellets having a narrow size distribution.Type: ApplicationFiled: March 21, 2001Publication date: June 5, 2003Applicant: General Electric CompanyInventor: Safwat E. Tadros
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Publication number: 20030105276Abstract: A weatherable composition comprising an upper layer that comprises a polymer system consisting essentially of a cycloaliphatic polyester resin, and an additive composition comprising an hindered amine light stabilizer and a low volatility, hydroxyphenyl triazine or pyrimidine UV absorber; an intermediate layer that comprises a polymer system consisting essentially of a cycloaliphatic polyester, and optionally, an additive composition comprising TiO2, dyes, pigments, and special effects additives; and a polymeric substrate, wherein the intermediate layer is disposed between and in intimate contact with the upper layer and the substrate. The composition finds utility in articles such as automotive parts.Type: ApplicationFiled: October 12, 2001Publication date: June 5, 2003Inventors: Safwat E. Tadros, Peter H. Th. Vollenberg
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Publication number: 20020165327Abstract: Disclosed is a low birefringence solvent cast film of optical quality comprising a blend of a cycloaliphatic polyester and a polycarbonate and method of preparing the film by casting a solvent containing dissolved cycloaliphatic polyester and a polycarbonate onto a support and evaporating the solvent to form a film.Type: ApplicationFiled: April 5, 2001Publication date: November 7, 2002Inventors: Gabrie Hoogland, Robert Puyenbroek, Hendrik Ralph Patrick Ritter, Safwat E. Tadros, Kang Xi
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Patent number: 6405579Abstract: A system for providing process control information, such as viscosity, concerning a polymer melt comprises a means containing a polymer melt under pressure; means for diverting a stream of the polymer melt directly from said containing means to and through an orifice of predetermined geometrical shape wherein the flow of said diverted portion to and through said orifice is unobstructed and directly dependent on the pressure of said main polymer melt wherein the cross sectional area is sized to permit the flow of said diverted melt polymer therethrough absence additional independent means acting on said diverted melt polymer for increasing flow through said orifice; temperature sensing means for measuring the temperature of the diverted melt stream and producing a resultant temperature signal; pressure sensing means for measuring the pressure of the diverted melt stream and producing a resultant pressure signal, said pressure signal being directly dependent on the pressure of polymer in said main polymer meltType: GrantFiled: September 11, 1999Date of Patent: June 18, 2002Assignee: General Electric CompanyInventors: Mahari Tjahjadi, Joseph M. H. Janssen, George F. Fischer, Ye-Gang Lin, Safwat E. Tadros, Galina D. Georgieva, Scott S. Haraburda
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Patent number: 5974866Abstract: A system for providing process control information, such as viscosity, concerning a polymer melt comprises a means containing a polymer melt under pressure; means for diverting a stream of the polymer melt directly from said containing means to and through an orifice of predetermined geometrical shape wherein the flow of said diverted portion to and through said orifice is unobstructed and directly dependent on the pressure of said main polymer melt wherein the cross sectional area is sized to permit the flow of said diverted melt polymer therethrough absence additional independent means acting on said diverted melt polymer for increasing flow through said orifice; temperature sensing means for measuring the temperature of the diverted melt stream and producing a resultant temperature signal; pressure sensing means for measuring the pressure of the diverted melt stream and producing a resultant pressure signal, said pressure signal being directly dependent on the pressure of polymer in said main polymer meltType: GrantFiled: August 29, 1997Date of Patent: November 2, 1999Assignee: General Electric CompanyInventors: Mahari Tjahjadi, Joseph M. H. Janssen, George F. Fischer, Ye-Gang Lin, Safwat E. Tadros, Galina D. Georgieva
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Patent number: 5078007Abstract: An apparatus and a process for quickly and accurately determining in-line the rheology of molten polymer streams, said apparatus comprising a cam member and a pressure wall member, one of which is a rotating member and the other one is a stationary member, the rotating member dragging molten polymer into a wedge-shaped clearance between the cam member and the pressure wall member, polymer pressure within the clearance being sensed by a pressure detection device capable of producing a signal responsive to said pressure in the form of a display, a graph, or an arbitrary numerical value, but preferably being transmitted to a computer programmed to calculate apparent melt viscosity of the polymer by the application of the Reynold's theory of lubrication.Type: GrantFiled: June 27, 1990Date of Patent: January 7, 1992Assignee: E. I. Du Pont de Nemours and CompanyInventor: Safwat E. Tadros
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Patent number: 4980061Abstract: A process for preparing reverse osmosis membranes is disclosed. A microporous hollow support fiber is passed through a solution of a monomer capable of undergoing condensation polymerization and such as m-phenylene diamine up through a capillary into a sedond less dense solution of a second monomer capable of undergoing condensation with said first monomer, such as trimesoyl chloride or cyclohexane-1,3,5-tricarbonyl chloride. The resulting fiber has a polymeric film deposited thereon which is effective as a reverse osmosis membrane.Type: GrantFiled: August 29, 1989Date of Patent: December 25, 1990Assignee: E. I. du Pont de Nemours and CompanyInventors: Safwat E. Tadros, Yves M. Trehu
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Patent number: 4664738Abstract: Lamination of film to woven fiber is achieved by localized infrared heating to heat directly onto the fibers, which in turn cause the covering film to soften and bond only in the area contacting the fibers.Type: GrantFiled: August 1, 1985Date of Patent: May 12, 1987Assignee: E. I. Du Pont de Nemours and CompanyInventor: Safwat E. Tadros