Patents by Inventor Che Ting Chan
Che Ting Chan 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: 11982866Abstract: An optical element driving mechanism is provided and includes a fixed assembly, a movable assembly, a driving assembly and a stopping assembly. The fixed assembly has a main axis. The movable assembly is configured to connect an optical element, and the movable assembly is movable relative to the fixed assembly. The driving assembly is configured to drive the movable assembly to move relative to the fixed assembly. The stopping assembly is configured to limit the movement of the movable assembly relative to the fixed assembly within a range of motion.Type: GrantFiled: December 15, 2022Date of Patent: May 14, 2024Assignee: TDK TAIWAN CORP.Inventors: Chao-Chang Hu, Liang-Ting Ho, Chen-Er Hsu, Yi-Liang Chan, Fu-Lai Tseng, Fu-Yuan Wu, Chen-Chi Kuo, Ying-Jen Wang, Wei-Han Hsia, Yi-Hsin Tseng, Wen-Chang Lin, Chun-Chia Liao, Shou-Jen Liu, Chao-Chun Chang, Yi-Chieh Lin, Shang-Yu Hsu, Yu-Huai Liao, Shih-Wei Hung, Sin-Hong Lin, Kun-Shih Lin, Yu-Cheng Lin, Wen-Yen Huang, Wei-Jhe Shen, Chih-Shiang Wu, Sin-Jhong Song, Che-Hsiang Chiu, Sheng-Chang Lin
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Patent number: 7567149Abstract: A waveguide structure is described wherein microwaves or radio-frequency waves can be guided in their propagation through channels whose cross-sections contain fractal patterns, with relevant dimensions much smaller than the wavelengths of the guided waves. A finite section of such waveguide can be used as an efficient delay line.Type: GrantFiled: April 5, 2006Date of Patent: July 28, 2009Assignee: The Hong Kong University of Science and TechnologyInventors: Weijia Wen, Ping Sheng, Che Ting Chan, Lei Zhou, Bo Hou
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Patent number: 7465519Abstract: A lithium ion battery is disclosed in which the negative electrode material comprises carbon nanostructures having no dimension greater than 2 ?m. The battery has a high reversible capacity of the order of 400 mAh/g to 500 mAh/g which can be maintained over a long cycle-life (at least 30 cycles). The carbon nanostructures may be mixed with graphite to improve conductivity. The carbon nanostructues may be synthesized using an AFI template material followed by calcination.Type: GrantFiled: September 3, 2004Date of Patent: December 16, 2008Assignee: The HongKong University of Science and TechnologyInventors: Zikang Tang, Ping Sheng, Qi Liang, Ning Wang, Che Ting Chan
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Publication number: 20070236312Abstract: A waveguide structure is described wherein microwaves or radio-frequency waves can be guided in their propagation through channels whose cross-sections contain fractal patterns, with relevant dimensions much smaller than the wavelengths of the guided waves. A finite section of such waveguide can be used as an efficient delay line.Type: ApplicationFiled: April 5, 2006Publication date: October 11, 2007Applicant: The Hong Kong University of Science and TechnologyInventors: Weijia Wen, Ping Sheng, Che Ting Chan, Lei Zhou, Bo Hou
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Patent number: 7249653Abstract: Acoustic attenuation materials are described that comprise outer layers of a stiff material sandwiching a relatively soft elastic material therebetween, with means such as spheres, discs or wire mesh being provided within the elastic material for generating local mechanical resonances that function to absorb sound energy at tunable wavelengths.Type: GrantFiled: May 3, 2004Date of Patent: July 31, 2007Assignee: RSM Technologies LimitedInventors: Ping Sheng, Man Tse, Che Ting Chan, Xi Xiang Zhang, Zongjin Li, Nelson Cue, Weijia Wen
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Patent number: 7053882Abstract: A “paper look-alike” display comprises pixels formed of dielectric particles suspended in a non-conducting liquid. By applying a voltage to electrodes the particles may be switched between positions in which they are stored in vertical columns normal to the surface of the pixel and have no effect on the color of the pixel, and a position in which they occupy a major part of the surface area of the pixel and influence the color of the pixel accordingly.Type: GrantFiled: July 21, 2003Date of Patent: May 30, 2006Assignee: ER Display LimitedInventors: Claude Weisbuch, Weijia Wen, Ping Sheng, Che Ting Chan, Weikun Ge
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Patent number: 6852251Abstract: There is described an electrorheological fluid comprising particles of a composite material suspended in an electrically insulating hydrophobic liquid. The composite particles are metal salts of the form M1xM22-2xTiO(C2O4)2 where M1 is selected from the group consisting of Ba, Sr and Ca and wherein M2 is selected from the group consisting of Rb, Li, Na and K, and the composite particles further include a promoter selected from the group consisting of urea, butyramide and acetamide.Type: GrantFiled: September 16, 2002Date of Patent: February 8, 2005Assignee: The Hong Kong University of Science and TechnologyInventors: Ping Sheng, Weijia Wen, Che Ting Chan, Weikun Ge, Shihe Yang
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Patent number: 6727863Abstract: The present invention relates to planar materials having bandgap properties. The materials are formed by depositing conductive fractal patterns on a non-conducting substrate. The bandgap location(s) are defined by parameters including the number of fractal levels, and the dimension of the fractal mother element. The bandgaps can also be actively controlled by injecting current into the conducting pattern.Type: GrantFiled: October 26, 2001Date of Patent: April 27, 2004Assignee: The Hong Kong University of Science and TechnologyInventors: Weijia Wen, Ping Sheng, Che Ting Chan, Weikun Ge, Lei Zhou, Jensen Li
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Publication number: 20040051076Abstract: There is described an electrorheological fluid comprising particles of a composite material suspended in an electrically insulating hydrophobic liquid. The composite particles are metal salts of the form M1xM22-2xTiO(C2O4)2 where M1 is selected from the group consisting of Ba, Sr and Ca and wherein M2 is selected from the group consisting of Rb, Li, Na and K, and the composite particles further include a promoter selected from the group consisting of urea, butyramide and acetamide.Type: ApplicationFiled: September 16, 2002Publication date: March 18, 2004Inventors: Ping Sheng, Weijia Wen, Che Ting Chan, Weikun Ge, Shihe Yang
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Publication number: 20030080921Abstract: The present invention relates to planar materials having bandgap properties. The materials are formed by depositing conductive fractal patterns on a non-conducting substrate. The bandgap location(s) are defined by parameters including the number of fractal levels, and the dimension of the fractal mother element. The bandgaps can also be actively controlled by injecting current into the conducting pattern.Type: ApplicationFiled: October 26, 2001Publication date: May 1, 2003Inventors: Weijia Wen, Ping Sheng, Che Ting Chan, Weikun Ge, Lei Zhou, Jensen Li
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Publication number: 20030062217Abstract: Acoustic attenuation materials are described that comprise outer layers of a stiff material sandwiching a relatively soft elastic material therebetween, with means such as spheres, discs or wire mesh being provided within the elastic material for generating local mechanical resonances that function to absorb sound energy at tunable wavelengths.Type: ApplicationFiled: September 28, 2001Publication date: April 3, 2003Inventors: Ping Sheng, Man Tse, Che Ting Chan, Xi Xiang Zhang, Zongjin Li, Nelson Cue, Weijia Wen
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Patent number: 5406573Abstract: A method for fabricating a periodic dielectric structure which exhibits a photonic band gap. Alignment holes are formed in a wafer of dielectric material having a given crystal orientation. A planar layer of elongate rods is then formed in a section of the wafer. The formation of the rods includes the step of selectively removing the dielectric material of the wafer between the rods. The formation of alignment holes and layers of elongate rods and wafers is then repeated to form a plurality of patterned wafers. A stack of patterned wafers is then formed by rotating each successive wafer with respect to the next-previous wafer, and then placing the successive wafer on the stack. This stacking results in a stack of patterned wafers having a four-layer periodicity exhibiting a photonic band gap.Type: GrantFiled: November 12, 1993Date of Patent: April 11, 1995Assignee: Iowa State University Research FoundationInventors: Ekmel Ozbay, Gary Tuttle, Erick Michel, Kai-Ming Ho, Rana Biswas, Che-Ting Chan, Costas Soukoulis
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Periodic dielectric structure for production of photonic band gap and devices incorporating the same
Patent number: 5335240Abstract: A periodic dielectric structure which is capable of producing a photonic band gap and which is capable of practical construction. The periodic structure is formed of a plurality of layers, each layer being formed of a plurality of rods separated by a given spacing. The material of the rods contrasts with the material between the rods to have a refractive index contrast of at least two. The rods in each layer are arranged with their axes parallel and at a given spacing. Adjacent layers are rotated by 90.degree., such that the axes of the rods in any given layer are perpendicular to the axes in its neighbor. Alternating layers (that is, successive layers of rods having their axes parallel such as the first and third layers) are offset such that the rods of one are about at the midpoint between the rods of the other. A four-layer periocity is thus produced, and successive layers are stacked to form a three-dimensional structure which exhibits a photonic band gap.Type: GrantFiled: December 22, 1992Date of Patent: August 2, 1994Assignee: Iowa State University Research Foundation, Inc.Inventors: Kai-Ming Ho, Che-Ting Chan, Costas Soukoulis