Patents by Inventor Michael Chia
Michael Chia 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: 20100315145Abstract: An apparatus for generating a plurality of signals is provided. The apparatus provided includes a first signal generation unit, including an input receiving a reference signal, and a plurality of outputs providing a first plurality of output signals being generated based on the reference signal, wherein any two of the output signals have a different phase. The apparatus provided further includes a second signal generation unit, including at least two inputs receiving at least two signals selected from the first plurality of output signals generated by the first signal generation unit, and a plurality of outputs providing a second plurality of output signals generated by interpolating the respective phases of the received at least two signals selected from the first plurality of output signals.Type: ApplicationFiled: February 22, 2008Publication date: December 16, 2010Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCHInventors: Piew Yoong Chee, Wing Fai Loke, Yan Wah Michael Chia, Jee Khoi Yin
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Publication number: 20100293781Abstract: Installation vessels and methods for offshore wind turbine installation are disclosed. In one embodiment, a cantilever mast is used to transfer of wind turbine components from an installation vessel to an offshore installation site and guide the transfer to prevent undesired swinging movements of the wind turbine components. In another embodiment, a main crane is used in cooperation with a guide arm to transfer and guide wind turbine components from an installation vessel to an offshore installation site.Type: ApplicationFiled: April 13, 2010Publication date: November 25, 2010Inventors: Kok Seng FOO, Hock Chye Michael Chia, Asbjørn Mortensen, Cheng Choong Chan, Teng Kiat Lim, Toh Tung Wong, Tom Aksel Waitz Østvold, Rune Henriksen
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Publication number: 20090128204Abstract: A time delay apparatus for generating a plurality of phase shifted signals is described comprising a phase tuner generating a phase control signal and a phase interpolator receiving at least one digital signal and generating the plurality of phase shifted signals by. phase shifting the digital signal according to the phase control signal.Type: ApplicationFiled: April 18, 2006Publication date: May 21, 2009Applicant: Agency for Science, Technology and ResearchInventors: Teck Hwee Lim, Jee Khoi Yin, Yan Wah Michael Chia
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Publication number: 20090115167Abstract: An improved electric motor scooter includes: a front frame; a front wheel assembly coupled to the front frame and residing on a surface; a back frame; a back wheel assembly coupled to the back frame and residing on the surface; and a center pivot mechanism coupled to the front frame and the back frame. The center pivot mechanism includes a pivot and a folding axis around which the pivot rotates. The folding axis is not perpendicular to a longitudinal axis of the scooter and is tilted from the longitudinal axis at an angle. A rotation of the pivot in a direction folds the scooter vertically from the surface and moves the back wheel assembly toward the front wheel assembly according to the angle. During the folding, the front wheel assembly and the back wheel assembly each remains on the surface as the pivot rotates.Type: ApplicationFiled: November 3, 2008Publication date: May 7, 2009Inventors: RYAN C. CHIN, RAUL-DAVID POBLANO, MICHAEL CHIA_LIANG LIN, ARTHUR JOSEPH PETRON
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Publication number: 20070190953Abstract: A method produces UWB pulses (73, 75) using a differentiated clock signal as a pulse input (71, 72), and a data signal to modulate the pulse input. The mixed signal is then differentiated a second time to produce high frequency broad band UWB signals. A differentiating system which comprises a transistor, a lowpass filter at the output of the transistor, the output of the lowpass filter negatively fedback to the input of the transistor, whereby the output of system has a high voltage swing capable of being matched to an antenna without further need of amplification, and the system is capable of implementation on an IC.Type: ApplicationFiled: January 6, 2004Publication date: August 16, 2007Inventors: Adrian Tan Eng Choon, Michael Chia Yan Wah
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Patent number: 7235618Abstract: Embodiments of the present invention include a polypropylene homopolymer synthesized from a metallocene catalyst system and methods of forming the homopolymer, the homopolymer having an aluminum and chlorine recoverables value of less than 25 ppm and a xylene solubles of less than 1 wt % relative to the total weight of the homopolymer. The resulting homopolymer has other desirable properties such as a heat deflection temperature at 0.45 MPa of from 90° C. to 110° C., and a MWD value of from 1.7 to 5.0. These properties make embodiments of the homopolymer desirable for films, and in particular for capacitor films.Type: GrantFiled: August 22, 2001Date of Patent: June 26, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Chon-Yie Lin, Bernard Louis Bossaert, Michael Chia-Chao Chen, Susan Chia-Yu Yeh
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Patent number: 7026040Abstract: This invention relates generally to films made from crystalline polypropylene polymers. Specifically, this invention relates to films comprising crystalline polypropylene polymer compositions containing both propylene homopolymers and propylene copolymers. The compositions are prepared using metallocene catalyst systems comprising at least two metallocenes in a polymerization process that involves the sequential or parallel polymerization of propylene homopolymers and copolymers using propylene with a small amount of comonomer, preferably ethylene. The resulting polymers are excellent for use in the production of biaxially oriented films. Films prepared with these propylene polymers have a significantly broader processability range and can be evenly stretched at lower temperature compared to films prepared from traditional polypropylene polymers.Type: GrantFiled: August 31, 2004Date of Patent: April 11, 2006Assignee: Exxon Mobil Chemical Patents Inc.Inventors: Aspy Keki Mehta, Michael Chia-Chao Chen, Chon-Yie Lin, James John Mcalpin, Anthony Nicholas Speca, Kelly Tormaschy
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Publication number: 20050159875Abstract: A technique for providing better detection of close range truck trailers for a motor vehicle with Stop and Go Adaptive Cruise Control determines if a range parameter to a target requires modification if such target is a truck trailer, for example. Truck trailer geometry is such that a standard adaptive cruise control system may have difficulty accurately determining the range to the rearmost position of the truck. The technique determines an initial range from the motor vehicle to a target. Then, the technique determines whether the range rate of the target is above a predetermined rate. When the range rate of the target is not above the predetermined rate, the technique determines whether the initial range to the target is less than a current range to the target. If so, the technique provides an adjusted range, which is then utilized in the control operation of the motor vehicle.Type: ApplicationFiled: January 21, 2004Publication date: July 21, 2005Inventor: Michael Chia
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Patent number: 6806316Abstract: This invention relates generally to crystalline polypropylene polymers and methods for their production. Specifically, this invention relates to crystalline polypropylene polymer compositions comprising both propylene homopolymers and propylene copolymers. The compositions are prepared using metallocene catalyst systems comprising at least two metallocenes in a polymerization process that involves the sequential or parallel polymerization of propylene homopolymers and copolymers using propylene with a small amount of comonomer, preferably ethylene. The resulting polymers are excellent for use in the production of biaxially oriented films. Films prepared with these propylene polymers have a significantly broader processability range and can be evenly stretched at lower temperature compared to films prepared from traditional polypropylene polymers.Type: GrantFiled: November 25, 2002Date of Patent: October 19, 2004Assignee: ExxonMobil Chemical Patents Inc.Inventors: Aspy Keki Mehta, Michael Chia-Chao Chen, Chon-Yie Lin, James John McAlpin, Anthony Nicholas Speca, Kelly Tormaschy
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Publication number: 20040171782Abstract: Embodiments of the present invention include a polypropylene homopolymer synthesized from a metallocene catalyst system and methods of forming the homopolymer, the homopolymer having an aluminum and chlorine recoverables value of less than 25 ppm and a xylene solubles of less than 1 wt % relative to the total weight of the homopolymer. The resulting homopolymer has other desirable properties such as a heat deflection temperature at 0.45 MPa of from 90° C. to 110° C., and a MWD value of from 1.7 to 5.0. These properties make embodiments of the homopolymer desirable for films, and in particular for capacitor films.Type: ApplicationFiled: July 8, 2003Publication date: September 2, 2004Inventors: Chon-Yie Lin, Bernard Louis Bossert, Chen Michael Chia-Chao, Susan Chia-Yu Yeh
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Patent number: 6734825Abstract: A multiple frequency band antenna is disclosed involving a first resonant portion tuned to a low frequency band; a second resonant portion tuned to a first high frequency band at frequencies higher than the low frequency band; a third resonant portion tuned to a second high frequency band at frequencies higher than the low frequency band and substantially different from the first high frequency band; and a first conductor portion forming part of the first resonant portion and the second resonant portion, the first conductor portion having a grounding point, a feeding point for providing an input signal to at least one of the first resonant portion and the second resonant portion and for receiving an output signal from at least one of the first resonant portion and the second resonant portion, and a second conductor portion electrically connected to the feeding point wherein the third resonant portion is electrically connected to the second conductor portion.Type: GrantFiled: October 28, 2002Date of Patent: May 11, 2004Assignee: The National University of SingaporeInventors: Yongxin Guo, Yan Wah Michael Chia, Zhining Chen
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Publication number: 20040080457Abstract: A multiple frequency band antenna is disclosed involving a first resonant portion tuned to a low frequency band; a second resonant portion tuned to a first high frequency band at frequencies higher than the low frequency band; a third resonant portion tuned to a second high frequency band at frequencies higher than the low frequency band and substantially different from the first high frequency band; and a first conductor portion forming part of the first resonant portion and the second resonant portion, the first conductor portion having a grounding point, a feeding point for providing an input signal to at least one of the first resonant portion and the second resonant portion and for receiving an output signal from at least one of the first resonant portion and the second resonant portion, and a second conductor portion electrically connected to the feeding point wherein the third resonant portion is electrically connected to the second conductor portion.Type: ApplicationFiled: October 28, 2002Publication date: April 29, 2004Inventors: Yongxin Guo, Yan Wah Michael Chia, Zhining Chen
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Publication number: 20030153689Abstract: This invention relates generally to crystalline polypropylene polymers and methods for their production. Specifically, this invention relates to crystalline polypropylene polymer compositions comprising both propylene homopolymers and propylene copolymers. The compositions are prepared using metallocene catalyst systems comprising at least two metallocenes in a polymerization process that involves the sequential or parallel polymerization of propylene homopolymers and copolymers using propylene with a small amount of comonomer, preferably ethylene. The resulting polymers are excellent for use in the production of biaxially oriented films. Films prepared with these propylene polymers have a significantly broader processability range and can be evenly stretched at lower temperature compared to films prepared from traditional polypropylene polymers.Type: ApplicationFiled: November 25, 2002Publication date: August 14, 2003Inventors: Aspy Keki Mehta, Michael Chia-Chao Chen, Chon-Yie Lin, James John McAlpin, Anthony Nicholas Speca, Kelly Tormaschy
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Patent number: 6476173Abstract: This invention relates to isotactic propylene homopolymer compositions obtained from metallocene catalysis wherein the polymer has a molecular weight distribution (Mw/Mn) in the range of from about 2.5 to about 20.0. The isototic propylene homopolymer composition may be prepared in a multiple stage polymerization process using the same metallocene component in at least two stages.Type: GrantFiled: November 7, 2000Date of Patent: November 5, 2002Assignee: Exxon Mobil Chemical Patents Inc.Inventors: Chon-Yie Lin, Michael Chia-Chao Chen, Aspy Keki Mehta, Rajan K. Chudgar
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Publication number: 20010016639Abstract: The co-polymerization reaction of one or more olefin monomers, such as propylene, with &agr;,&ohgr;-diene units and the resulting copolymers are provided. More specifically, the copolymer may have from 90 to 99.999 weight percent of olefins and from 0.001 to 2.000 weight percent of &agr;,&ohgr;-dienes. The copolymer may have a weight average molecular weight in the range from 50,000 to 2,000,000, a crystallization temperature in the range from 115° C. to 135° C. and a melt flow rate in the range from 0.1 dg/min to 100 dg/min. These copolymers may be employed in a wide variety of applications, the articles of which include, for example, films, fibers, such as spunbonded and meltblown fibers, fabrics, such as nonwoven fabrics, and molded articles. The copolymer may further include at least two crystalline populations.Type: ApplicationFiled: December 11, 2000Publication date: August 23, 2001Inventors: Pawan Kumar Agarwal, Weiqing Weng, Aspy Keki Mehta, Armenag Hagop Dekmezian, Christopher Ross Davey, Charlie Y. Lin, Michael Chia-Chao Chen, Galen Charles Richeson
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Publication number: 20010007896Abstract: The co-polymerization reaction of one or more olefin monomers, such as propylene, with &agr;,&ohgr;-diene units and the resulting copolymers are provided. More specifically, the copolymer may have from 90 to 99.999 weight percent of olefins and from 0.001 to 2.000 weight percent of &agr;,&ohgr;)-dienes. The copolymer may have a weight average molecular weight in the range from 50,000 to 2,000,000, a crystallization temperature in the range from 115° C. to 135° C. and a melt flow rate in the range from 0.1 dg/min to 100 dg/min. These copolymers may be employed in a wide variety of applications, the articles of which include, for example, films, fibers, such as spunbonded and meltblown fibers, fabrics, such as nonwoven fabrics, and molded articles. The copolymer may further include at least two crystalline populations.Type: ApplicationFiled: December 11, 2000Publication date: July 12, 2001Inventors: Pawan Kumar Agarwal, Weiqing Weng, Aspy Keki Mehta, Armenag Hagop Dekmezian, Christopher Ross Davey, Charlie Y. Lin, Michael Chia-Chao Chen, Galen Charles Richeson, Rajan K. Chudgar, Main Chang
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Patent number: 6207750Abstract: This invention relates to isotactic propylene homopolymer compositions obtained from metallocene catalysis wherein the polymer has a molecular weight distribution (Mw/Mn) in the range of from about 2.5 to about 20.0. The isotactic propylene homopolymer composition may be prepared in a multiple stage polymerization process using the same metallocene component in at least two stages.Type: GrantFiled: April 16, 1999Date of Patent: March 27, 2001Assignee: Exxon Chemical Patents, Inc.Inventors: Chon-Yie Lin, Michael Chia-Chao Chen, Aspy Keki Mehta, Rajan K. Chudgar
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Patent number: 5741563Abstract: Shrink films prepared from metallocene catalyzed propylene homopolymers and copolymers are provided. The films exhibit a unique balance of properties as compared to known shrink films including higher stiffness, tensile strength and moisture barrier, lower extractables, improved shrinkage and increased shrink tension. In addition, the shrink behavior of the film can be substantially tailored by modifying the amount of comonomer present in the propylene polymer.Type: GrantFiled: July 30, 1996Date of Patent: April 21, 1998Assignee: Exxon Chemical Patents Inc.Inventors: Aspy Keki Mehta, Michael Chia-Chao Chen