Patents by Inventor Juan He
Juan He 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: 11254880Abstract: The present invention relates to the use of adsorbents comprising zinc oxide nanowires decorated with catalytically active metal particles for the removal of sulfur from hydrocarbon feedstocks, including the desulfurization of diesel fuels and the deep desulfurization of natural gas, and to the use of decorated zinc oxide nanowire adsorbents for the hydrogenation of naphthalene selectively to tetralin in the presence of sulfur compounds. The adsorbent comprises nickel metal particles or nickel-zinc alloy particles deposited on zinc oxide nanowires.Type: GrantFiled: April 6, 2020Date of Patent: February 22, 2022Assignee: Advanced Energy Materials, LLCInventors: Mahendra Sunkara, Sivakumar Vasireddy, Juan He
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Patent number: 11221512Abstract: A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated with backlight illumination from a backlight unit. The backlight unit may include a printed circuit board, a plurality of light-emitting diodes mounted on the printed circuit board, at least one light spreading layer formed over the printed circuit board that spreads light received from the plurality of light-emitting diodes, a partially reflective layer formed over the at least one light spreading layer, a color conversion layer formed over the partially reflective layer, a collimating layer formed over the color conversion layer, a brightness enhancement film formed over the collimating layer, and a diffuser formed over the brightness enhancement film. The at least one light spreading layer may include two light spreading layers with elongated protrusions that are rotated relative to each other.Type: GrantFiled: March 6, 2019Date of Patent: January 11, 2022Assignee: Apple Inc.Inventors: Rong Liu, Daming Xu, Jun Qi, Ling Han, Mookyung Son, Chenhua You, Victor H. Yin, Xinyu Zhu, Heesang Suh, Juan He, Joshua A. Spechler, Zhenyue Luo, Suraj P. Gorkhali
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Patent number: 11180702Abstract: The present development is a metal particle coated nanowire catalyst for use in the hydrodesulfurization of fuels and a process for the production of the catalyst. The catalyst comprises titanium(IV) oxide nanowires wherein the nanowires are produced by exposure of a TiO2—KOH paste to microwave radiation. Metal particles selected from the group consisting of molybdenum, nickel, cobalt, tungsten, or a combination thereof, are impregnated on the metal oxide nanowire surface. The metal impregnated nanowires are sulfided to produce catalytically-active metal particles on the surface of the nanowires The catalysts of the present invention are intended for use in the removal of thiophenic sulfur from liquid fuels through a hydrodesulfurization (HDS) process in a fixed bed reactor. The presence of nanowires improves the HDS activity and reduces the sintering effect, therefore, the sulfur removal efficiency increases.Type: GrantFiled: January 31, 2020Date of Patent: November 23, 2021Assignee: Advanced Energy Materials, LLCInventors: Mahendra K. Sunkara, Sivakumar Vasireddy, Juan He, Vivekanand Kumar
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Patent number: 11009745Abstract: A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated with backlight illumination from a backlight unit. The backlight unit may include a printed circuit board, a plurality of light-emitting diodes mounted on the printed circuit board, at least one light spreading layer formed over the printed circuit board that spreads light received from the plurality of light-emitting diodes, a partially reflective layer formed over the at least one light spreading layer, a color conversion layer formed over the partially reflective layer, a collimating layer formed over the color conversion layer, a brightness enhancement film formed over the collimating layer, and a diffuser formed over the brightness enhancement film. The at least one light spreading layer may include two light spreading layers with elongated protrusions that are rotated relative to each other.Type: GrantFiled: March 6, 2019Date of Patent: May 18, 2021Assignee: Apple Inc.Inventors: Rong Liu, Daming Xu, Joshua A. Spechler, Jun Qi, Victor H. Yin, Ling Han, Juan He, Ziruo Hong, Mookyung Son, Heesang Suh, Xinyu Zhu
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Publication number: 20210122887Abstract: Perovskite-polymer composites including perovskite nanocrystals dispersed in a polymer matrix, wherein the perovskite nanocrystals have an average size of from about 5 nm to about 20 nm. Methods for producing a perovskite-polymer composites that may include contacting a solid material comprising a polymer matrix with a solution comprising a perovskite precursor; allowing the solution to penetrate the solid material to yield a swollen solid material comprising the perovskite precursor dispersed within the polymer matrix; optionally contacting the swollen solid material with an antisolvent; and annealing the swollen solid material to crystallize the perovskite precursor and to yield the perovskite-polymer composite comprising perovskite nanocrystals dispersed in the polymer matrix.Type: ApplicationFiled: July 30, 2020Publication date: April 29, 2021Inventors: Yajie DONG, Shin-Tson WU, Juan HE
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Patent number: 10977947Abstract: A method for vehicle blind zone detection, applied to an electronic device coupled to one or more cameras arranged on a vehicle, the method comprising: setting a capture zone in a current frame image captured by the camera and detecting an object entering the capture zone in the current frame image, wherein the object meeting a capture criterion and a location information of the object meeting the capture criterion are added into a tracking list; performing tracking operations on an existing object, which has been detected and thus added to the tracking list, in one or more previous frame images preceding the current frame image captured by the camera, to obtain a new location information of the existing object in the current frame image, and determining whether to have the existing object remained in the tracking list in accordance with the new location information of the existing object and the detection scope; and making a warning determination in accordance with the location information in the current fraType: GrantFiled: February 18, 2019Date of Patent: April 13, 2021Assignee: VIA TECHNOLOGIES, INC.Inventor: Juan He
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Patent number: 10907092Abstract: Methods of making luminescent perovskite-polymer composites are provided and structures using the same. Perovskite-polymer composites made by the method described herein are provided. The perovskite-polymer composite is useful in many applications including downconverters for backlight units (BLU) of liquid crystal displays (LCDs), as well as for and could be used for light emitting devices, lasers or as active absorber or passive luminescent concentrators for solar photovoltaic applications.Type: GrantFiled: July 7, 2016Date of Patent: February 2, 2021Assignee: University of Central Florida Research Foundation, Inc.Inventors: Yajie Dong, Yanan Wang, Shin-Tson Wu, Juan He, Hao Chen, Jiangshan Chen
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Patent number: 10901260Abstract: A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated with backlight illumination from a backlight unit. The backlight unit may include a printed circuit board, a plurality of light-emitting diodes mounted on the printed circuit board, at least one light spreading layer formed over the printed circuit board that spreads light received from the plurality of light-emitting diodes, a partially reflective layer formed over the at least one light spreading layer, a color conversion layer formed over the partially reflective layer, a collimating layer formed over the color conversion layer, a brightness enhancement film formed over the collimating layer, and a diffuser formed over the brightness enhancement film. The at least one light spreading layer may include two light spreading layers with elongated protrusions that are rotated relative to each other.Type: GrantFiled: March 6, 2019Date of Patent: January 26, 2021Assignee: Apple Inc.Inventors: Rong Liu, Jun Qi, Victor H. Yin, Wei Lv, Joshua A. Spechler, Yu P. Sun, Suraj P. Gorkhali, Daming Xu, Edward H. Kang, Wenyong Zhu, Ziruo Hong, Xinyu Zhu, Ling Han, Mookyung Son, Pee Khiam So, Janos C. Keresztes, Chenhua You, Zhenyue Luo, Heesang Suh, Juan He, Hung Sheng Lin
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Publication number: 20200231883Abstract: The present development is a metal particle coated nanowire catalyst for use in the hydrodesulfurization of fuels and a process for the production of the catalyst. The catalyst comprises titanium(IV) oxide nanowires wherein the nanowires are produced by exposure of a TiO2—KOH paste to microwave radiation. Metal particles selected from the group consisting of molybdenum, nickel, cobalt, tungsten, or a combination thereof, are impregnated on the metal oxide nanowire surface. The metal impregnated nanowires are sulfided to produce catalytically-active metal particles on the surface of the nanowires The catalysts of the present invention are intended for use in the removal of thiophenic sulfur from liquid fuels through a hydrodesulfurization (HDS) process in a fixed bed reactor. The presence of nanowires improves the HDS activity and reduces the sintering effect, therefore, the sulfur removal efficiency increases.Type: ApplicationFiled: April 6, 2020Publication date: July 23, 2020Inventors: Mahendra K. Sunkara, Sivakumar Vasireddy, Juan He, Vivekanand Kumar
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Publication number: 20200231882Abstract: The present invention relates to the use of adsorbents comprising zinc oxide nanowires decorated with catalytically active metal particles for the removal of sulfur from hydrocarbon feedstocks, including the desulfurization of diesel fuels and the deep desulfurization of natural gas, and to the use of decorated zinc oxide nanowire adsorbents for the hydrogenation of naphthalene selectively to tetralin in the presence of sulfur compounds. The adsorbent comprises nickel metal particles or nickel-zinc alloy particles deposited on zinc oxide nanowires.Type: ApplicationFiled: April 6, 2020Publication date: July 23, 2020Inventors: Mahendra Sunkara, Sivakumar Vasireddy, Juan He
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Publication number: 20200188873Abstract: The present development is a new approach for deep desulfurization by adsorption of for removing sulfur using a solid adsorbent under atmospheric pressure and elevated temperatures from liquid fuels such as diesel, waste lube oil without using hydrogen. The adsorbent comprises metal particles from a group of Ni, Pt, Co, Mo and Cu deposited on MOx nanowires (M=Zn, Fe and Mn).Type: ApplicationFiled: February 8, 2018Publication date: June 18, 2020Inventors: Mahendra Sunkara, Sivakumar Vasireddy, Juan He
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Publication number: 20200181510Abstract: The present development is a metal particle coated nanowire catalyst for use in the hydrodesulfurization of fuels and a process for the production of the catalyst. The catalyst comprises titanium(IV) oxide nanowires wherein the nanowires are produced by exposure of a TiO2—KOH paste to microwave radiation. Metal particles selected from the group consisting of molybdenum, nickel, cobalt, tungsten, or a combination thereof, are impregnated on the metal oxide nanowire surface. The metal impregnated nanowires are sulfided to produce catalytically-active metal particles on the surface of the nanowires The catalysts of the present invention are intended for use in the removal of thiophenic sulfur from liquid fuels through a hydrodesulfurization (HDS) process in a fixed bed reactor. The presence of nanowires improves the HDS activity and reduces the sintering effect, therefore, the sulfur removal efficiency increases.Type: ApplicationFiled: January 31, 2020Publication date: June 11, 2020Inventors: Mahendra K. Sunkara, Sivakumar Vasireddy, Juan He, Vivekanand Kumar
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Publication number: 20200160717Abstract: A method for vehicle blind zone detection, applied to an electronic device coupled to one or more cameras arranged on a vehicle, the method comprising: setting a capture zone in a current frame image captured by the camera and detecting an object entering the capture zone in the current frame image, wherein the object meeting a capture criterion and a location information of the object meeting the capture criterion are added into a tracking list; performing tracking operations on an existing object, which has been detected and thus added to the tracking list, in one or more previous frame images preceding the current frame image captured by the camera, to obtain a new location information of the existing object in the current frame image, and determining whether to have the existing object remained in the tracking list in accordance with the new location information of the existing object and the detection scope; and making a warning determination in accordance with the location information in the current fraType: ApplicationFiled: February 18, 2019Publication date: May 21, 2020Inventor: Juan HE
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Patent number: 10593902Abstract: An ultrabright bright quantum dot light-emitting diode (QLED) device and associated method of manufacture. The QLED device includes quantum dots (QD) as emitters and a mixture of metal oxide nanoparticles and alkali metal compounds for simultaneous electron injection and hole blocking to achieve charging balance at high driving current conditions. The ultrabright QLEDs are useful for many light source applications including, but not limited to display, solid state lighting, optical sensor, phototherapy, photomedicine and photobiomedicine.Type: GrantFiled: September 26, 2018Date of Patent: March 17, 2020Assignee: University of Central Florida Research Foundation, Inc.Inventors: Yajie Dong, Hao Chen, Shin-Tson Wu, Juan He
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Patent number: 10584289Abstract: The present development is a metal particle coated nanowire catalyst for use in the hydrodesulfurization of fuels and a process for the production of the catalyst. The catalyst comprises titanium(IV) oxide nanowires wherein the nanowires are produced by exposure of a TiO2—KOH paste to microwave radiation. Metal particles selected from the group consisting of molybdenum, nickel, cobalt, tungsten, or a combination thereof, are impregnated on the metal oxide nanowire surface. The metal impregnated nanowires are sulfided to produce catalytically-active metal particles on the surface of the nanowires The catalysts of the present invention are intended for use in the removal of thiophenic sulfur from liquid fuels through a hydrodesulfurization (HDS) process in a fixed bed reactor. The presence of nanowires improves the HDS activity and reduces the sintering effect, therefore, the sulfur removal efficiency increases.Type: GrantFiled: December 29, 2017Date of Patent: March 10, 2020Assignee: Advanced Energy MaterialsInventors: Mahendra K. Sunkara, Sivakumar Vasireddy, Juan He, Vivekanand Kumar
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Publication number: 20190285944Abstract: A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated with backlight illumination from a backlight unit. The backlight unit may include a printed circuit board, a plurality of light-emitting diodes mounted on the printed circuit board, at least one light spreading layer formed over the printed circuit board that spreads light received from the plurality of light-emitting diodes, a partially reflective layer formed over the at least one light spreading layer, a color conversion layer formed over the partially reflective layer, a collimating layer formed over the color conversion layer, a brightness enhancement film formed over the collimating layer, and a diffuser formed over the brightness enhancement film. The at least one light spreading layer may include two light spreading layers with elongated protrusions that are rotated relative to each other.Type: ApplicationFiled: March 6, 2019Publication date: September 19, 2019Inventors: Rong Liu, Jun Qi, Victor H. Yin, Wei Lv, Joshua A. Spechler, Yu P. Sun, Suraj P. Gorkhali, Daming Xu, Edward H. Kang, Wenyong Zhu, Ziruo Hong, Xinyu Zhu, Ling Han, Mookyung Son, Pee Khiam So, Janos C. Keresztes, Chenhua You, Zhenyue Luo, Heesang Suh, Juan He, Hung Sheng Lin
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Publication number: 20190285950Abstract: A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated with backlight illumination from a backlight unit. The backlight unit may include a printed circuit board, a plurality of light-emitting diodes mounted on the printed circuit board, at least one light spreading layer formed over the printed circuit board that spreads light received from the plurality of light-emitting diodes, a partially reflective layer formed over the at least one light spreading layer, a color conversion layer formed over the partially reflective layer, a collimating layer formed over the color conversion layer, a brightness enhancement film formed over the collimating layer, and a diffuser formed over the brightness enhancement film. The at least one light spreading layer may include two light spreading layers with elongated protrusions that are rotated relative to each other.Type: ApplicationFiled: March 6, 2019Publication date: September 19, 2019Inventors: Rong Liu, Daming Xu, Joshua A. Spechler, Jun Qi, Victor H. Yin, Ling Han, Juan He, Ziruo Hong, Mookyung Son, Heesang Suh, Xinyu Zhu
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Publication number: 20190285943Abstract: A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated with backlight illumination from a backlight unit. The backlight unit may include a printed circuit board, a plurality of light-emitting diodes mounted on the printed circuit board, at least one light spreading layer formed over the printed circuit board that spreads light received from the plurality of light-emitting diodes, a partially reflective layer formed over the at least one light spreading layer, a color conversion layer formed over the partially reflective layer, a collimating layer formed over the color conversion layer, a brightness enhancement film formed over the collimating layer, and a diffuser formed over the brightness enhancement film. The at least one light spreading layer may include two light spreading layers with elongated protrusions that are rotated relative to each other.Type: ApplicationFiled: March 6, 2019Publication date: September 19, 2019Inventors: Rong Liu, Daming Xu, Jun Qi, Ling Han, Mookyung Son, Chenhua You, Victor H. Yin, Xinyu Zhu, Heesang Suh, Juan He, Joshua A. Spechler, Zhenyue Luo, Suraj P. Gorkhali
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Publication number: 20190103571Abstract: An ultrabright bright quantum dot light-emitting diode (QLED) device and associated method of manufacture. The QLED device includes quantum dots (QD) as emitters and a mixture of metal oxide nanoparticles and alkali metal compounds for simultaneous electron injection and hole blocking to achieve charging balance at high driving current conditions. The ultrabright QLEDs are useful for many light source applications including, but not limited to display, solid state lighting, optical sensor, phototherapy, photomedicine and photobiomedicine.Type: ApplicationFiled: September 26, 2018Publication date: April 4, 2019Inventors: Yajie Dong, Hao Chen, Shin-Tson Wu, Juan He
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Publication number: 20180187094Abstract: The present development is a metal particle coated nanowire catalyst for use in the hydrodesulfurization of fuels and a process for the production of the catalyst. The catalyst comprises titanium(IV) oxide nanowires wherein the nanowires are produced by exposure of a TiO2—KOH paste to microwave radiation. Metal particles selected from the group consisting of molybdenum, nickel, cobalt, tungsten, or a combination thereof, are impregnated on the metal oxide nanowire surface. The metal impregnated nanowires are sulfided to produce catalytically-active metal particles on the surface of the nanowires The catalysts of the present invention are intended for use in the removal of thiophenic sulfur from liquid fuels through a hydrodesulfurization (HDS) process in a fixed bed reactor. The presence of nanowires improves the HDS activity and reduces the sintering effect, therefore, the sulfur removal efficiency increases.Type: ApplicationFiled: December 29, 2017Publication date: July 5, 2018Applicant: Advanced Energy Materials, LLCInventors: Mahendra K. Sunkara, Sivakumar Vasireddy, Juan He, Vivekanand Kumar