Patents by Inventor Mahari Tjahjadi
Mahari Tjahjadi 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: 20240054575Abstract: The present invention relates to a method for optimisation of the sustainability footprint of a polymer formulation, wherein the method involves: a. identifying one or more material specifications which are to be present in the polymer formulation; b. identifying one of more sustainability criteria to be optimised in the polymer formulation; c. providing a repository of materials that may be selected for use in the polymer formulation; d. providing a computer-implemented algorithm for calculating the contribution of each of the materials selected from the repository to achieving the desired material specifications of the polymer formulation; e. providing a computer-implemented algorithm for calculating the contribution of each of the materials selected from the repository to optimising the desired sustainability criteria of the polymer formulation; and f.Type: ApplicationFiled: December 20, 2021Publication date: February 15, 2024Inventors: Maria Soliman, Teena Bonizzi, Johan Pastwa, Mahari Tjahjadi
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Patent number: 11273884Abstract: The invention relates to a bicycle frame made by injection molding pellets of a long glass fibre reinforced polypropylene composition having a core containing glass fibres and an impregnating agent and a sheath of polypropylene surrounding said core, wherein the pellets have an average length of at least 1 mm, the amount of the glass fibers is 10 to 70 wt % with respect to the composition and the polypropylene has a flexural modulus determined according to ASTM D790A of at least 1000 N/mm2.Type: GrantFiled: August 29, 2019Date of Patent: March 15, 2022Assignee: SABIC GLOBAL TECHNOLOGIES B.V.Inventors: Jing Guo, Maria Soliman, Mahari Tjahjadi, Chaodong Jiang, Christelle Marie Helene Grein, Ratnesh Khandelwal
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Publication number: 20210309316Abstract: The invention relates to a bicycle frame made by injection molding pellets of a long glass fibre reinforced polypropylene composition having a core containing glass fibres and an impregnating agent and a sheath of polypropylene surrounding said core, wherein the pellets have an average length of at least 1 mm, the amount of the glass fibers is 10 to 70 wt % with respect to the composition and the polypropylene has a flexural modulus determined according to ASTM D790A of at least 1000 N/mm2.Type: ApplicationFiled: August 29, 2019Publication date: October 7, 2021Inventors: Jing GUO, Maria SOLIMAN, Mahari TJAHJADI, Chaodong JIANG, Christelle Marie Helene GREIN, Ratnesh KHANDELWAL
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Publication number: 20190119509Abstract: In an embodiment, an infrared blocking composition comprises 60 to 98 wt % of a curable prepolymer based on a total weight of the curable prepolymer and an infrared blocking agent; 2 to 40 wt % of the infrared blocking agent based on a total weight of the curable prepolymer and the infrared blocking agent; wherein the infrared blocking agent comprises indium tin oxide, antimony tin oxide, fluorine tin oxide, tungsten oxide, or a combination comprising at least one of the foregoing.Type: ApplicationFiled: June 6, 2017Publication date: April 25, 2019Inventors: Liping Zheng, Mahari Tjahjadi, Hengjie Lai
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Publication number: 20170361584Abstract: This disclosure relates to materials prepared using a laser-direct structuring (LDS) method. The LDS materials of the present disclosure comprise polymeric film or polymeric sheet structures containing a LDS additive and which can undergo laser-direct structuring and chemical plating to form conductive paths on their surface. The present disclosure finds use, for example, in the automotive, electronics, RFID, communications, and medical device industries.Type: ApplicationFiled: December 8, 2015Publication date: December 21, 2017Inventors: Wei FENG, Mahari TJAHJADI, Tong WU, Yuxian AN
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Publication number: 20170367182Abstract: The present disclosure relates to LDS materials comprising a first coating layer comprising a first LDS additive, and a base substrate, wherein the coating layer contacts the base substrate. Articles formed from the LDS materials are also disclosed that include a conductive path and a metal layer deposited on the activated path. Methods for making the LDS materials and corresponding articles are also described.Type: ApplicationFiled: December 8, 2015Publication date: December 21, 2017Inventors: Tong WU, Wei FENG, Yangang YAN, Wenjia Zhang, Yuxian AN, Xueming Lian, Mahari TJAHJADI
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Patent number: 7708446Abstract: Disclosed herein is a display film stack for a backlight display system. In one embodiment, the display system comprises: a light source, a first film comprising a first surface texture layer that is formed of a first material of a first refractive index, and a second film comprising a second surface texture layer that is formed of a second material of a second refractive index. The second film is disposed between the light source and the first film. The second refractive index is greater than the first refractive index. The light source is disposed in optical communication with the first film and the second film. The first surface texture layer and the second surface texture layer comprise unit structures independently selected from the group consisting of hemispherical structures, partial hemispherical structures, ellipsoidal structures, immersed spherical beads, ellipsoidal beads, “bell-shape” bump and complex lens shape structures.Type: GrantFiled: February 26, 2008Date of Patent: May 4, 2010Assignee: Sabic Innovative Plastic IP B.V.Inventors: Jian Zhou, Kevin Patrick Capaldo, Chung-hei Yeung, Mahari Tjahjadi, Andrei Sharygin
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Publication number: 20090219461Abstract: Disclosed herein is a display film stack for a backlight display system. In one embodiment, the display system comprises: a light source, a first film comprising a first surface texture layer that is formed of a first material of a first refractive index, and a second film comprising a second surface texture layer that is formed of a second material of a second refractive index. The second film is disposed between the light source and the first film. The second refractive index is greater than the first refractive index. The light source is disposed in optical communication with the first film and the second film. The first surface texture layer and the second surface texture layer comprise unit structures independently selected from the group consisting of hemispherical structures, partial hemispherical structures, ellipsoidal structures, immersed spherical beads, ellipsoidal beads, “bell-shape” bump and complex lens shape structures.Type: ApplicationFiled: February 26, 2008Publication date: September 3, 2009Inventors: Jian Zhou, Kevin Patrick Capaldo, Chung-hei Yeung, Mahari Tjahjadi, Andrei Sharygin
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Patent number: 7553895Abstract: A thermoplastic polycarbonate composition is disclosed, in various embodiments, having enhanced low-temperature ductility, UV resistance and/or fire-retardance characteristics. The composition comprises a polycarbonate, and a combination of an elastomer-modified graft copolymer and a polysiloxane-polycarbonate copolymer. The polycarbonate composition is useful for manufacture of electronic and mechanical parts, among others.Type: GrantFiled: June 29, 2006Date of Patent: June 30, 2009Assignee: SABIC Innovative Plastics IP B.V.Inventors: Yuxian An, Jing Chen, Hua Jiao, Yegang Lin, Mahari Tjahjadi, XinMin Yang
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Publication number: 20080114103Abstract: A thermoplastic resin composition comprises an aromatic polycarbonate; an impact modifier; a flame retardant; and from 0.9 to 5.38 mol % of an anti-static additive having the formula: wherein X is independently selected from halogen or hydrogen provided that at least one X is halogen; n, m and p are integers from 0 to 12; and Y is zero or a heterocyclic atom, other than carbon, of an atomic ring and is either nitrogen, oxygen, sulfur, selenium, phosphorus, arsenic, and the like; R1, R2, and R3 are the same, each having an aliphatic hydrocarbon radical with 1 to 8 carbon atoms or an aromatic hydrocarbon radical of 6 to 12 carbon atoms and R4 is a hydrocarbon radical with 1 to 18 carbon atoms; wherein the amount of the anti-static additive is based on 100 kg of the composition.Type: ApplicationFiled: November 13, 2006Publication date: May 15, 2008Applicant: GENERAL ELECTRIC COMPANYInventors: Theodorus Lambertus Hoeks, Robert Puyenbroek, Zhaohui Qu, Mahari Tjahjadi, Wayne Yao
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Publication number: 20080004397Abstract: A thermoplastic polycarbonate composition is disclosed, in various embodiments, having enhanced low-temperature ductility, UV resistance and/or fire-retardance characteristics. The composition comprises a polycarbonate, and a combination of an elastomer-modified graft copolymer and a polysiloxane-polycarbonate copolymer. The polycarbonate composition is useful for manufacture of electronic and mechanical parts, among others.Type: ApplicationFiled: June 29, 2006Publication date: January 3, 2008Applicant: General Electric CompanyInventors: Yuxian An, Jing Chen, Hua Jiao, Yegang Lin, Mahari Tjahjadi, XinMin Yang
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Publication number: 20070293608Abstract: A polycarbonate composition is disclosed having improved fatigue resistance characteristics. The composition is useful for manufacture of electronic and mechanical articles, such as cell phone housing, among others. The composition comprises an effective amount of a polycarbonate, an impact modifier, and a pentraerythritol diphosphite derivative represented by formula (P-1): wherein m is an integer and 1?m?5; n is an integer and 1?n?5; and each of R1 and R2 is independently selected from the group consisting of arylalkyl, alkylarylalkyl, aryl, alkylaryl, and any combination thereof.Type: ApplicationFiled: June 19, 2006Publication date: December 20, 2007Applicant: General Electric CompanyInventors: Jing Chen, Theodorus Lambertus Hoeks, Mahari Tjahjadi
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Publication number: 20070191519Abstract: A halogen-free polycarbonate composition is disclosed having improved fire-retardancy and/or transparency characteristics. The composition comprises a polycarbonate, and a synergic combination of an aromatic sulfone sulfonate such as potassium diphenylsulfone sulfonate, an aromatic sulfonate such as sodium salt of toluene sulfonic acid, and optionally a siloxane oligomer. The polycarbonate composition is useful for manufacture of electronic and mechanical parts, among others.Type: ApplicationFiled: February 14, 2006Publication date: August 16, 2007Applicant: General Electric CompanyInventors: Hua Jiao, Yegang Lin, Rajendra Singh, Mahari Tjahjadi, Jingwu Yang, XinMin Yang
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Patent number: 6415665Abstract: An ultrasonic probe and method for noninvasively monitoring materials processing in screw driven extruders. The noninvasive probe includes at least one ultrasonic transducer operable to transmit an ultrasonic signal on a signal path intersecting an inner sidewall of a barrel of the extruder and material between the inner sidewall of the barrel and an outer surface of a screw within the barrel. Information about the state of the material intersected by the ultrasonic signal is ascertainable from an elapsed time between reception of a first reflection of the ultrasonic signal and reception of a second reflection of the ultrasonic signal. The first reflection results when the ultrasonic signal exits the inner sidewall of the barrel and the second reflection results when the ultrasonic signal reaches one of the outer surface of the screw and partially solid material.Type: GrantFiled: March 13, 2000Date of Patent: July 9, 2002Assignee: General Electric CompanyInventors: Robert Snee Gilmore, Mahari Tjahjadi
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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: 5977265Abstract: High flow brominated polycarbonates, useful as flame retardant additives for other polymers such as polyesters, are obtained by equilibration of a brominated aromatic polycarbonate such as a tetrabromobisphenol A homo- or copolycarbonate with a di- or polyhydroxy aromatic compound such as bisphenol A, or a diaryl carbonate, and an equilibration catalyst, under conditions such that the weight average molecular weight of the brominated polycarbonate is reduced by at least 35%. Preferred equilibration catalysts are Group I metal carboxylates, such as sodium stearate, and hexaalkylguanidinium salts.Type: GrantFiled: September 2, 1997Date of Patent: November 2, 1999Assignee: General Electric CompanyInventors: Patrick Joseph McCloskey, Gary Charles Davis, David Michel Dardaris, Daniel Joseph Brunelle, Robert Russell Gallucci, Mahari Tjahjadi, David Whalen, Kevin Mitchell Snow
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Patent number: 5863974Abstract: Flame retarded resin molding compositions with enhanced electrical properties comprising a polyamide resin, a flame retarding amount of a halogenated flame retardant, a fiber glass and/or mineral filler, and an effective amount of a pyro/polyphosphate, and optionally including an olefinic polymer for enhancing electrical properties.Type: GrantFiled: January 28, 1997Date of Patent: January 26, 1999Assignee: General Electric CompanyInventors: Mahari Tjahjadi, Robert R. Gallucci, Kirk J. Blackburn, Eric R. George
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Patent number: 5551777Abstract: This invention relates to extruders of the type which employ single screws that use chaotic mixing to generate substantially better distributive mixing. Such structures of this type, generally, stretch and fold material lines repeatedly such that interfacial areas between material elements increase exponentially and heat/mass transfers are greatly enhanced.Type: GrantFiled: November 16, 1995Date of Patent: September 3, 1996Assignee: General Electric CompanyInventors: Mahari Tjahjadi, Robert W. Foster