Patents by Inventor Xueyuan Liu
Xueyuan Liu 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: 20250079675Abstract: A filter cover, a resonator, an RF cavity filter comprising the filter cover or the resonator, and a communication device comprising the RF cavity filter are disclosed. A filter cover (2) according to an embodiment comprises, at its inner surface (21), at least one flexible flap (22, 23) for frequency tuning or coupling tuning, which extends from and substantially perpendicular to the inner surface (21). A resonator (3) according to an embodiment is made of a sheet metal, and is integrally formed with a body portion (31), a folded portion (32), and a flexible portion (33, 34, 35) which is connected to the body portion (31) or the folded portion (32) and is bendable with respect to the body portion (31) or the folded portion (32) for frequency tuning or coupling tuning.Type: ApplicationFiled: January 4, 2022Publication date: March 6, 2025Applicant: Telefonaktiebolaget LM Ericsson (publ)Inventors: Bingjian NIU, Weidong WANG, Jun ZHENG, Yang LIU, Xueyuan ZHANG
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Publication number: 20240100194Abstract: Provided herein are targeting peptides and vectors containing a sequence that encodes the targeting peptides that deliver agents to specific substructures in the brain.Type: ApplicationFiled: October 20, 2023Publication date: March 28, 2024Applicant: The Children’s Hospital of PhiladelphiaInventors: Beverly DAVIDSON, Yonghong CHEN, Paul T. RANUM, Xueyuan LIU
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Publication number: 20230346981Abstract: Provided herein are targeting peptides and vectors containing a sequence that encodes the targeting peptides that deliver agents to specific substructures in the brain. Provided herein are viral vectors each comprising a modified capsid, wherein the modified capsid comprises at least one amino acid sequence that targets the viral vector to a distinct brain structure.Type: ApplicationFiled: November 20, 2020Publication date: November 2, 2023Applicant: The Children's Hospital of PhiladelphiaInventors: Beverly DAVIDSON, Yonghong CHEN, Paul T. RANUM, Xueyuan LIU
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Patent number: 8294802Abstract: A charge-coupled device (CCD) image sensor includes a layer of a semiconductor material having a first conductivity type. A horizontal CCD channel region of a second conductivity type is disposed in the layer of the semiconductor material. The horizontal CCD channel region includes multiple phases that are used to shift photo-generated charge through the horizontal CCD channel region. Distinct overflow drain regions are disposed in the layer of semiconducting material, with an overflow drain region electrically connected to only one particular phase of the horizontal CCD channel region.Type: GrantFiled: October 30, 2009Date of Patent: October 23, 2012Assignee: Truesense Imaging, Inc.Inventors: Shen Wang, Xueyuan Liu
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Publication number: 20110102658Abstract: A charge-coupled device (CCD) image sensor includes a layer of a semiconductor material having a first conductivity type. A horizontal CCD channel region of a second conductivity type is disposed in the layer of the semiconductor material. The horizontal CCD channel region includes multiple phases that are used to shift photo-generated charge through the horizontal CCD channel region. Distinct overflow drain regions are disposed in the layer of semiconducting material, with an overflow drain region electrically connected to only one particular phase of the horizontal CCD channel region.Type: ApplicationFiled: October 30, 2009Publication date: May 5, 2011Inventors: Shen Wang, Xueyuan Liu
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Patent number: 7298954Abstract: An improved waveguide shuttle optical switch design which provides the function of a variable optical attenuator (VOA). A small degree of intentional misalignment of the waveguide will create different levels of optical attenuation. By finely controlling the misalignment of a selected switched position, a single device may be realized that will provide the functions of both switching and attenuating or just attenuation alone. The optical MEMS device utilizes a latching mechanism in association with a thermal drive actuator for aligning a waveguide shuttle platform. The integration of the switching function and the VOA function reduce the optical loss which is otherwise unavoidable when the inevitable alternative of a separate switch and a separate VOA must necessarily be employed. The resultant improved device can also be applied for correcting the difference in optical intensity created by the manufacturing tolerances inherent in the fabrication of array waveguide gratings.Type: GrantFiled: June 16, 2005Date of Patent: November 20, 2007Assignee: Xerox CorporationInventors: Xueyuan Liu, Peter M. Gulvin, Kristine A. German, Yao Rong Wang, Jun Ma, Pinyen Lin, Joel A. Kubby, Kathleen A. Feinberg
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Patent number: 7242825Abstract: An improved cantilever beam optical switch design which provides the function of a variable optical attenuator (VOA). A small degree of intentional misalignment of the waveguide will create different levels of optical attenuation. By finely controlling the misalignment of a selected switched position, a single device may be realized that will provide the functions of both switching and attenuating or just attenuation alone. The optical MEMS device utilizes a latching mechanism in association with a thermal drive actuator for aligning a cantilever beam platform. The integration of the switching function and the VOA function reduce the optical loss which is otherwise unavoidable when the inevitable alterative of a separate switch and a separate VOA must necessarily be employed. The resultant improved device can also be applied for correcting the difference in optical intensity created by the manufacturing tolerances inherent in the fabrication of array waveguide gratings.Type: GrantFiled: December 13, 2004Date of Patent: July 10, 2007Assignee: Xerox CorporationInventors: Pinyen Lin, Yao Rong Wang, Jun Ma, Xueyuan Liu, Peter M. Gulvin, Kristine A. German, Joel A. Kubby
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Publication number: 20060291794Abstract: An improved waveguide shuttle optical switch design which provides the function of a variable optical attenuator (VOA). A small degree of intentional misalignment of the waveguide will create different levels of optical attenuation. By finely controlling the misalignment of a selected switched position, a single device may be realized that will provide the functions of both switching and attenuating or just attenuation alone. The optical MEMS device utilizes a latching mechanism in association with a thermal drive actuator for aligning a waveguide shuttle platform. The integration of the switching function and the VOA function reduce the optical loss which is otherwise unavoidable when the inevitable alternative of a separate switch and a separate VOA must necessarily be employed. The resultant improved device can also be applied for correcting the difference in optical intensity created by the manufacturing tolerances inherent in the fabrication of array waveguide gratings.Type: ApplicationFiled: June 16, 2005Publication date: December 28, 2006Inventors: Xueyuan Liu, Peter Gulvin, Kristine German, Yao Wang, Jun Ma, Pinyen Lin, Joel Kubby, Kathleen Feinberg
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Patent number: 7116880Abstract: First and second ridge type photonic waveguides are provided. Each of the waveguides includes a core layer and a reflective cladding layer in continuous contact with a first side of a core layer. The core layer has a core index of the refraction and is formed in a ridge in a dimension and shape to impose lateral confinement. The reflective cladding layer has an index of refraction that is substantially different than the core index of refraction. An inter-waveguide slab portion is provided between the first and second waveguides. A substrate supports the first and second waveguides, the slab portion, and the reflective cladding layer. A light interceptor region is provided to hinder a transfer of photons between the first and second waveguides through the inter-waveguides slab portion. The light interceptor region may include a trench region, which is an air gap in one embodiment.Type: GrantFiled: June 30, 2005Date of Patent: October 3, 2006Assignee: Xerox CorporationInventors: Xueyuan Liu, Yao Rong Wang, Kristine A. German, Peter M. Gulvin
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Publication number: 20060127029Abstract: An improved cantilever beam optical switch design which provides the function of a variable optical attenuator (VOA). A small degree of intentional misalignment of the waveguide will create different levels of optical attenuation. By finely controlling the misalignment of a selected switched position, a single device may be realized that will provide the functions of both switching and attenuating or just attenuation alone. The optical MEMS device utilizes a latching mechanism in association with a thermal drive actuator for aligning a cantilever beam platform. The integration of the switching function and the VOA function reduce the optical loss which is otherwise unavoidable when the inevitable alterative of a separate switch and a separate VOA must necessarily be employed. The resultant improved device can also be applied for correcting the difference in optical intensity created by the manufacturing tolerances inherent in the fabrication of array waveguide gratings.Type: ApplicationFiled: December 13, 2004Publication date: June 15, 2006Inventors: Pinyen Lin, Yao Wang, Jun Ma, Xueyuan Liu, Peter Gulvin, Kristine German, Joel Kubby
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Patent number: 6987920Abstract: A waveguide structure has a base having a base height (h) above a substrate and a rectangular waveguide having a waveguide height (H) above the substrate and a waveguide width (W) between opposing sides of the waveguide.Type: GrantFiled: June 28, 2004Date of Patent: January 17, 2006Assignee: Xerox CorporationInventors: Kristine A. German, Peter M. Gulvin, Joel A. Kubby, Pinyen Lin, Xueyuan Liu, Yao Rong Wang
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Publication number: 20050286850Abstract: A waveguide structure has a base having a base height (h) above a substrate and a rectangular waveguide having a waveguide height (H) above the substrate and a waveguide width (W) between opposing sides of the waveguide.Type: ApplicationFiled: June 28, 2004Publication date: December 29, 2005Inventors: Kristine German, Peter Gulvin, Joel Kubby, Pinyen Lin, Xueyuan Liu, Yao Wang