Patents by Inventor Hongbo Yu
Hongbo Yu 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: 11912630Abstract: The present invention provides a method of preparing a recycled cementitious material by a phosphogypsum-assisted carbon sequestration pretreatment process. The method includes: (1) placing 100 mass parts of phosphogypsum, 1 to 2 mass parts of grinding aid, 10 to 20 mass parts of sodium-containing alkali component, 150 to 300 mass parts of zirconia balls, and 150 to 300 mass parts of water into a wet grinding tank for wet grinding. After 10 min to 30 min of wet grinding, introducing CO2 at a flow rate of 1.5 to 2.2 mass parts/min to keep a temperature of a wet grinding slurry below 40° C. When the wet grinding slurry reaches pH=10, ending the wet grinding and sieving out a wet grinding slurry; (2) mixing the wet grinding slurry with 700 to 1000 mass parts of slag and 100 to 350 mass parts of water to obtain a recycled cementitious material.Type: GrantFiled: May 23, 2023Date of Patent: February 27, 2024Assignee: Hubei University Of TechnologyInventors: Jin Yang, Xiaolei Yu, Xingyang He, Ying Su, Mingchao Zhang, Qiang Zhang, Zhengqi Zheng, Hongbo Tan
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Patent number: 10603744Abstract: A method of manufacturing a side-coupling structure, associated with coupling an aiming beam from an aiming beam fiber into a laser beam fiber, may include removing a coating from a section of the laser beam fiber and removing a coating from a section of the aiming beam fiber. The method may further include bringing the section of the aiming beam fiber in physical contact with the section of the laser beam fiber in order to create the side-coupling structure. The method may further include recoating the section of the laser beam fiber and the section of the aiming beam fiber in order to coat the side-coupling structure.Type: GrantFiled: December 7, 2018Date of Patent: March 31, 2020Assignee: Lumentum Operations LLCInventors: Changgeng Ye, Hongbo Yu, Martin H. Muendel
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Publication number: 20190193196Abstract: A method of manufacturing a side-coupling structure, associated with coupling an aiming beam from an aiming beam fiber into a laser beam fiber, may include removing a coating from a section of the laser beam fiber and removing a coating from a section of the aiming beam fiber. The method may further include bringing the section of the aiming beam fiber in physical contact with the section of the laser beam fiber in order to create the side-coupling structure. The method may further include recoating the section of the laser beam fiber and the section of the aiming beam fiber in order to coat the side-coupling structure.Type: ApplicationFiled: December 7, 2018Publication date: June 27, 2019Inventors: Changgeng YE, Hongbo YU, Martin H. MUENDEL
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Patent number: 9419173Abstract: A flip-chip LED and a method for forming the LED are disclosed. The method includes: providing a substrate and depositing on the substrate an epitaxial layer including, from the bottom upward, an n-type GaN layer, a multi-quantum well active layer, and a p-type GaN layer; etching the epitaxial layer to form an array of openings exposing the n-type GaN layer; forming a first metal layer on the p-type GaN layer; annealing the first metal layer to induce self-assembly thereof; etching the p-type GaN layer by using the first metal layer as a mask such that an array of holes formed therein; and depositing a second metal layer over the array of holes, the second metal layer and the first metal layer form a metal reflector layer. The design can result in an improvement in the light extraction efficiency of the LED.Type: GrantFiled: March 1, 2013Date of Patent: August 16, 2016Assignee: ENRAYTEK OPTOELECTRONICS CO., LTD.Inventor: Hongbo Yu
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Patent number: 9377593Abstract: Alignment of a multimode waveguide to a source of light or another waveguide is evaluated using a multi-wavelength light source and a modal decomposition processing of an intensity profile of a waveguide output beam, wherein inter-modal interference is averaged out over wavelength. Fitting a superposition of mode intensity profiles to a wavelength-averaged intensity profile of the output beam provides information about the modal composition of the output beam, which may be used to assess the alignment of the multimode waveguide with respect to the input light beam, and to provide a feedback for guiding a waveguide alignment process.Type: GrantFiled: November 19, 2014Date of Patent: June 28, 2016Assignee: Lumentum Operations LLCInventors: Xiuquan Ma, Hongbo Yu, Martin H. Muendel
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Publication number: 20150349195Abstract: A flip-chip LED and a method for forming the LED are disclosed. The method includes: providing a substrate and depositing on the substrate an epitaxial layer including, from the bottom upward, an n-type GaN layer, a multi-quantum well active layer, and a p-type GaN layer; etching the epitaxial layer to form an array of openings exposing the n-type GaN layer; forming a first metal layer on the p-type GaN layer; annealing the first metal layer to induce self-assembly thereof; etching the p-type GaN layer by using the first metal layer as a mask such that an array of holes formed therein; and depositing a second metal layer over the array of holes, the second metal layer and the first metal layer form a metal reflector layer. The design can result in an improvement in the light extraction efficiency of the LED.Type: ApplicationFiled: March 1, 2013Publication date: December 3, 2015Applicant: ENRAYTEK OPTOELECTRONICS CO., LTD.Inventor: Hongbo YU
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Patent number: 9082891Abstract: A method for manufacturing a deep isolation trench (221) and a method for manufacturing a high-voltage LED chip. Steps of the method for manufacturing a deep isolation trench (221) are as follows: forming a mask layer (202) on a substrate (200), and forming, in the mask layer, through etching, multiple windows (204) isolated from each other, the bottom of each window exposing the substrate; with epitaxial lateral overgrowth, forming an epitaxial structure (212) inside each window and a part of the mask layer around the window, respectively, each epitaxial structure having a trapezoidal cross section with a long bottom and a short top, and a gap between adjacent epitaxial structures forming a first deep trench (214); etching each epitaxial structure, forming a first shoulder (218) and a second shoulder (221) at both sides of each epitaxial structure, respectively, and forming a deep isolation trench above the mask layer between the adjacent epitaxial structures.Type: GrantFiled: March 1, 2013Date of Patent: July 14, 2015Assignee: ENRAYTEK OPTOELECTRONICS CO., LTD.Inventors: Lujun Yao, Deyuan Xiao, Richard Ru-Gin Chang, Hongbo Yu
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Publication number: 20150139638Abstract: Alignment of a multimode waveguide to a source of light or another waveguide is evaluated using a multi-wavelength light source and a modal decomposition processing of an intensity profile of a waveguide output beam, wherein inter-modal interference is averaged out over wavelength. Fitting a superposition of mode intensity profiles to a wavelength-averaged intensity profile of the output beam provides information about the modal composition of the output beam, which may be used to assess the alignment of the multimode waveguide with respect to the input light beam, and to provide a feedback for guiding a waveguide alignment process.Type: ApplicationFiled: November 19, 2014Publication date: May 21, 2015Inventors: Xiuquan MA, Hongbo Yu, Martin H. Muendel
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Publication number: 20150024524Abstract: A method for manufacturing a deep isolation trench (221) and a method for manufacturing a high-voltage LED chip. Steps of the method for manufacturing a deep isolation trench (221) are as follows: forming a mask layer (202) on a substrate (200), and forming, in the mask layer, through etching, multiple windows (204) isolated from each other, the bottom of each window exposing the substrate; with epitaxial lateral overgrowth, forming an epitaxial structure (212) inside each window and a part of the mask layer around the window, respectively, each epitaxial structure having a trapezoidal cross section with a long bottom and a short top, and a gap between adjacent epitaxial structures forming a first deep trench (214); etching each epitaxial structure, forming a first shoulder (218) and a second shoulder (221) at both sides of each epitaxial structure, respectively, and forming a deep isolation trench above the mask layer between the adjacent epitaxial structures.Type: ApplicationFiled: March 1, 2013Publication date: January 22, 2015Applicant: Enraytek Optoelectronics Co., LtdInventors: Lujun Yao, Deyuan Xiao, Richard Ru-Gin Chang, Hongbo Yu
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Patent number: 8849078Abstract: A high power (HP) fiber circulator is configured with a case enclosing a plurality of optical components which are arranged so as to define multiple ports. The fiber circulator further includes a plurality of launching and receiving fiber components each of which has spliced delivery and pigtailed passive fibers selectively coupling a HP input signal into and receiving a HP output signal from respective input and output ports. The passive fibers of each fiber component have respective protective coatings spaced from one another and each covering the cladding of the fibers. A light stripper, extending between the protective coatings, is operative to substantially remove cladding-supported light from one of the passive fibers before it reaches the protective coating of the other passive fiber.Type: GrantFiled: September 24, 2012Date of Patent: September 30, 2014Assignee: IPG Photonics CorporationInventors: Dmitry Starodubov, Hongbo Yu, Alex Yusim
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Publication number: 20140086526Abstract: A high power (HP) fiber circulator is configured with a case enclosing a plurality of optical components which are arranged so as to define multiple ports. The fiber circulator further includes a plurality of launching and receiving fiber components each of which has spliced delivery and pigtailed passive fibers selectively coupling a HP input signal into and receiving a HP output signal from respective input and output ports. The passive fibers of each fiber component have respective protective coatings spaced from one another and each covering the cladding of the fibers. A light stripper, extending between the protective coatings, is operative to substantially remove cladding-supported light from one of the passive fibers before it reaches the protective coating of the other passive fiber.Type: ApplicationFiled: September 24, 2012Publication date: March 27, 2014Inventors: Dmitry Starodubov, Hongbo Yu, Alex Yusim
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Patent number: 8320415Abstract: A high power (HP) fiber circulator is configured with a case enclosing a plurality of optical components which are arranged so as to define multiple ports. The fiber circulator further includes a plurality of launching and receiving fiber components each of which has spliced delivery and pigtailed passive fibers selectively coupling a HP input signal into and receiving a HP output signal from respective input and output ports. The passive fibers of each fiber component have respective protective coatings spaced from one another and each covering the cladding of the fibers. A light stripper, extending between the protective coatings, is operative to substantially remove cladding-supported light from one of the passive fibers before it reaches the protective coating of the other passive fiber.Type: GrantFiled: August 19, 2009Date of Patent: November 27, 2012Assignee: IPG Photonics CorporationInventors: Dmitry Starodubov, Alex Yusim, Hongbo Yu
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Patent number: 8307562Abstract: An improved laser line generating device is provided for use in construction layout tasks. The laser line generating device is comprised of a first laser light generator operable to emit from a housing a first plane of light having a fan angle greater than 180° and arranged in the housing to project the first plane of light perpendicular to a horizontal plane; and a second laser light generator operable to emit from the housing a second plane of light having a fan angle greater than 180° and arranged in the housing to project the second plane of light perpendicular to the first plane of light and perpendicular to the horizontal plane, such that the first plane of light intersects with the second plane of light at two points.Type: GrantFiled: April 29, 2010Date of Patent: November 13, 2012Assignee: Black & Decker Inc.Inventors: James P. Bascom, Jiang Jia Yong, Wang Xiang, Xie Sheng Tao, Si Wei Hua, Daniel Hardy, Hongbo Yu
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Publication number: 20110044358Abstract: A high power (HP) fiber circulator is configured with a case enclosing a plurality of optical components which are arranged so as to define multiple ports. The fiber circulator further includes a plurality of launching and receiving fiber components each of which has spliced delivery and pigtailed passive fibers selectively coupling a HP input signal into and receiving a HP output signal from respective input and output ports. The passive fibers of each fiber component have respective protective coatings spaced from one another and each covering the cladding of the fibers. A light stripper, extending between the protective coatings, is operative to substantially remove cladding-supported light from one of the passive fibers before it reaches the protective coating of the other passive fiber.Type: ApplicationFiled: August 19, 2009Publication date: February 24, 2011Applicant: IPG Photonics CorporationInventors: Dmitry Starodubov, Hongbo Yu, Alex Yusim
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Patent number: 6182575Abstract: The invention relates to adjustable stop-wagon retarders with locking function for wagons at high speed and disposal methods thereof, which are suitable for railway marshaling yards or rail lines where it is required to prevent wagons from running away, which are hydraulic equipment of no external energy source to automatically regulate wagon's speed and disposal methods of such equipment. The stop-wagon retarder is characterized in that a uni-directional return unit comprising a sealing valve plate and adjustable throttle valve, and a locking control valve composing of switch valve and positioning unit are mounted in the piston assembly, which make the returning speed and the locking speed for wagon at high speed adjustable, thus the aim of setting the retarder with different control levels and thresholds according to the wagon speed is realized.Type: GrantFiled: August 6, 1998Date of Patent: February 6, 2001Assignee: China TDJ System Research CentreInventors: Yongting Liu, Qian Wang, Lining Wang, Mingzhu Wang, Hongbo Yu, Peiwen Chang, Libin Zhang