Patents by Inventor Xi Ren
Xi Ren 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: 11975979Abstract: A method for growing bulk boron arsenide (BA) crystals, the method comprising utilizing a seeded chemical vapor transport (CVT) growth mechanism to produce single BAs crystals which are used for further CVT growth, wherein a sparsity of nucleation centers is controlled during the further CVT growth. Also disclosed are bulk BAs crystals produced via the method.Type: GrantFiled: June 20, 2019Date of Patent: May 7, 2024Assignee: UNIVERSITY OF HOUSTON SYSTEMInventors: Zhifeng Ren, Fei Tian, Gang Chen, Bai Song, Ke Chen, Li Shi, Xi Chen, Sean Sullivan, David Broido, Navaneetha Krishnan Ravichandran
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Patent number: 11973333Abstract: A method for determining phase locking of critical arc light includes: step 1: monitoring and collecting light radiation intensity of an arc inside a switch cabinet in real time, and converting the collected light radiation intensity into an electrical signal; step 2: extracting a power-frequency fundamental wave of the electrical signal, comparing an amplitude of the power-frequency fundamental wave of the electrical signal with a first threshold, and generating a pre-warning signal based on a comparison result of the first threshold; step 3: comparing the amplitude of the power-frequency fundamental wave of the electrical signal with a second threshold voltage, and generating a control signal based on a comparison result of the second threshold voltage and a protection time threshold; and step 4: protecting the switch cabinet under the critical arc light environment based on the pre-warning signal and the control signal.Type: GrantFiled: February 6, 2023Date of Patent: April 30, 2024Assignee: Wuxi Power Supply Branch of State Grid Jiangsu Electric Power Co., Ltd.Inventors: Jin Miao, Ping Chen, Yin Gu, Xi Wu, Jun Qin, Bin Fei, Junfeng Wu, Zhaoyun Leng, Ming Ren
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Patent number: 11973236Abstract: The embodiment of the present application relates to the field of battery, and in particular relates to a battery, an electric apparatus, and a method for producing a battery. The battery of the present application includes: a battery cell; a box body configured for accommodating the battery cell and comprising a sleeve, and a first end cover and a second end cover for sealing both ends of the sleeve in a height direction respectively; a first insulating member, at least part of the first insulating member being located between the first end cover and the battery cell; and a second insulating member, at least part of the second insulating member being located between the second end cover and the battery cell; where an inner wall of the sleeve is provided with a fixing portion configured to fix the first insulating member and the second insulating member.Type: GrantFiled: December 30, 2021Date of Patent: April 30, 2024Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LTD.Inventors: Yifeng Chen, Danyue Xue, Qing Wang, Shuai Ren, Binbin Chen, Xi Wang
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Patent number: 11827749Abstract: A method of preparing a colorless transparent copolyamide-imide resin solution and its fabrication as a thin film has been disclosed. The method details formulations derived from a reaction between one or more units of dianhydride and one or more units of diamine monomers with one or more of the monomers containing fluorine atoms in their structural unit. It enables the fabrication of thin films with superior thermal and mechanical properties along with co-efficient of thermal expansion values as low as 2 ppm/° C. and a tensile modulus as high as 9 GPa. The transparent copolyamide-imide film thus prepared has the potential for utilization in flexible displays such as substrates for thin film transistors (TFT), touch sensor panels (TSP) and cover window in organic light emitting diode (OLED) and liquid crystal display (LCD) applications.Type: GrantFiled: April 7, 2020Date of Patent: November 28, 2023Assignees: RAYITEK Hi-Tech Film Company, Ltd., Shenzhen, Ohio State Innovation FoundationInventors: Karthikeyan Perumal, Jonathan Robert Parquette, Kuppusamy Kanakarajan, Xi Ren, ZhenZhong Wang
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Publication number: 20230287030Abstract: The present application provides methods of functionalizing an organ or tissue of a mammal by administering a nutrient (e.g., peracetylated N-azido galactosamine Ac4GalNAz) to the mammal or by culturing an organ or tissue in a bioreactor containing such nutrient. The present application also provides methods of selectively functionalizing extracellular matrix (ECM) of an organ or tissue of a mammal by administering a nutrient (e.g., peracetylated N-azido galactosamine Ac4GalNAz) to the mammal. In some aspects, the present application provides a decellularized scaffold of a mammalian organ or tissue comprising an extracellular matrix, wherein the extracellular matrix of the decellularized scaffold is functionalized with a chemical group that is reactive in a bioorthogonal chemical reaction, such as an azide chemical group. The present application also provides biological prosthetic mesh and mammalian organs and tissues for transplantation prepared according to the methods of the application.Type: ApplicationFiled: March 8, 2023Publication date: September 14, 2023Inventors: Harald C. Ott, Xi Ren, Jordan P. Bloom, Taufiek Konrad Rajab
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Publication number: 20230258994Abstract: Disclosed is an arbitrarily tailorable electrochromic device and use thereof, wherein the electrochromic device includes in order of a first transparent flexible substrate, a first transparent electron-conductive layer, an electrochromic layer, an electrolyte solution with automatically curable in presence of air and/or moisture to achieve a self-encapsulation function, an ion storage layer, a second transparent electron-conductive layer and a second transparent flexible substrate. The electrochromic device of the present disclosure is arbitrarily tailorable and can be used in various applications.Type: ApplicationFiled: April 24, 2023Publication date: August 17, 2023Inventors: Cheng YANG, Xi REN
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Patent number: 11697710Abstract: A polyimide film contains fluorinated substituents and cardo structures. The polyimide film exhibits excellent heat-resistance, transparency and mechanical properties. The polyimide film has a glass-transition temperature (Tg) of at least 360° C., a coefficient of thermal expansion (CTE) of 50 ppm/° C. or lower, a modulus of at least 4.0 Gpa, a b* value of 5 or lower and yellowness index of 8 or less. The polyimide film can be used as a display substrate or an optical film in a liquid crystal display (LCD), an organic light-emitting diode (OLED) and in other fields where the characteristic features are required.Type: GrantFiled: August 7, 2019Date of Patent: July 11, 2023Assignees: RAYITEK Hi-Tech Film Company, Ltd., Shenzhen, Jiaxing RAYITEK Film Technology Co., Ltd.Inventors: YanYan Jiang, ZhenZhong Wang, Xi Ren, Wei Zhang
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Publication number: 20230145854Abstract: A polyimide precursor solution is disclosed, and a colorless transparent polyimide film manufactured from the polyimide precursor solution. The polyimide precursor solution has diamines, a first dianhydride represented by biphenyl dianhydride, a second dianhydride represented by rigid alicyclic dianhydride, a third dianhydride represented by non-alicyclic dianhydrides and organic solvent. The colorless polyimide films have a modulus of 4.5 GPa or higher, a glass-transition temperature (Tg) of 370° C. or higher, and a yellow index of 3.0 or lower. These polyimide films can be used as substrates for thin film transistor (TFT), touch sensor panel (TSP), and cover window applications in flexible display such as organic light-emitting diode (OLED), flexible liquid crystal display (LCD) and other fields.Type: ApplicationFiled: January 5, 2023Publication date: May 11, 2023Inventors: YanYan JIANG, Xi REN, ZhenZhong WANG, LiGuo XIAO
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Patent number: 11634448Abstract: The present application provides methods of functionalizing an organ or tissue of a mammal by administering a nutrient (e.g., peracetylated N-azido galactosamine Ac4GalNAz) to the mammal or by culturing an organ or tissue in a bioreactor containing such nutrient. The present application also provides methods of selectively functionalizing extracellular matrix (ECM) of an organ or tissue of a mammal by administering a nutrient (e.g., peracetylated N-azido galactosamine Ac4GalNAz) to the mammal. In some aspects, the present application provides a decellularized scaffold of a mammalian organ or tissue comprising an extracellular matrix, wherein the extracellular matrix of the decellularized scaffold is functionalized with a chemical group that is reactive in a bioorthogonal chemical reaction, such as an azide chemical group. The present application also provides biological prosthetic mesh and mammalian organs and tissues for transplantation prepared according to the methods of the application.Type: GrantFiled: June 15, 2017Date of Patent: April 25, 2023Assignee: The General Hospital CorporationInventors: Harald C. Ott, Xi Ren, Jordan P. Bloom, Taufiek Konrad Rajab
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Publication number: 20220354990Abstract: A method of immobilizing extracellular vesicles in an extracellular matrix material provides for improved extracellular vesicle retention in vitro and in vivo. Extracellular matrix materials, such as collagen, are functionalized with chemicals that are complimentary to ligands disposed on the surface of the extracellular vesicle. In one example embodiment, collagen is functionalized with dibenzocyclooctyne and the extracellular vesicle is functionalized with an azide tag. The extracellular vesicle is immobilized within the collagen through a click reaction involving the dibenzocyclooctyne and the azide tag.Type: ApplicationFiled: May 10, 2022Publication date: November 10, 2022Applicant: Carnegie Mellon UniversityInventors: Xi Ren, Phil G. Campbell, Yunhui Xing, Saigopalakrishna Saileelaprasa Yerneni
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Publication number: 20220081660Abstract: A perfusion bioreactor system has an inner chamber and scaffold with matching porosities to equalize fluid flow through a bioreactor. The scaffold can be fabricated using additive manufacturing or other fabrication techniques to match the geometrical shape of a defect, such as a facial bone anomaly. The inner chamber is fabricated in a similar manner and has an inner cavity matching the shape of the scaffold to create a unified structure when assembled together with the scaffold. By matching the shapes of the scaffold and inner chamber, free space is eliminated within the interior volume of the bioreactor. Stem cells can be flowed through the bioreactor and attached to the scaffold, which are then cultured to grow a tissue graft.Type: ApplicationFiled: September 17, 2021Publication date: March 17, 2022Applicant: CARNEGIE MELLON UNIVERSITYInventors: Xi Ren, Barbie Clara Varghese, Ananya Sushanta Kar, Julia Eve Napolitano, Yunhui Xing
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Publication number: 20210309804Abstract: A method of preparing a colorless transparent copolyamide-imide resin solution and its fabrication as a thin film has been disclosed. The method details formulations derived from a reaction between one or more units of dianhydride and one or more units of diamine monomers with one or more of the monomers containing fluorine atoms in their structural unit. It enables the fabrication of thin films with superior thermal and mechanical properties along with co-efficient of thermal expansion values as low as 2 ppm/° C. and a tensile modulus as high as 9 GPa. The transparent copolyamide-imide film thus prepared has the potential for utilization in flexible displays such as substrates for thin film transistors (TFT), touch sensor panels (TSP) and cover window in organic light emitting diode (OLED) and liquid crystal display (LCD) applications.Type: ApplicationFiled: April 7, 2020Publication date: October 7, 2021Inventors: Karthikeyan PERUMAL, Jonathan Robert PARQUETTE, Kuppusamy KANAKARAJAN, Xi REN, ZhenZhong WANG
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Publication number: 20210095076Abstract: A polyimide precursor solution is disclosed, and a colorless transparent polyimide film manufactured from the polyimide precursor solution. The polyimide precursor solution has diamines, a first dianhydride represented by biphenyl dianhydride, a second dianhydride represented by rigid alicyclic dianhydride, a third dianhydride represented by non-alicyclic dianhydrides and organic solvent. The colorless polyimide films have a modulus of 4.5 GPa or higher, a glass-transition temperature (Tg) of 370° C. or higher, and a yellow index of 3.0 or lower. These polyimide films can be used as substrates for thin film transistor (TFT), touch sensor panel (TSP), and cover window applications in flexible display such as organic light-emitting diode (OLED), flexible liquid crystal display (LCD) and other fields.Type: ApplicationFiled: October 15, 2019Publication date: April 1, 2021Inventors: YanYan JIANG, Xi REN, ZhenZhong WANG, LiGuo XIAO
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Publication number: 20210040266Abstract: A polyimide film contains fluorinated substituents and cardo structures. The polyimide film exhibits excellent heat-resistance, transparency and mechanical properties. The polyimide film has a glass-transition temperature (Tg) of at least 360° C., a coefficient of thermal expansion (CTE) of 50 ppm/° C. or lower, a modulus of at least 4.0 Gpa, a b* value of 5 or lower and yellowness index of 8 or less. The polyimide film can be used as a display substrate or an optical film in a liquid crystal display (LCD), an organic light-emitting diode (OLED) and in other fields where the characteristic features are required.Type: ApplicationFiled: August 7, 2019Publication date: February 11, 2021Inventors: YanYan JIANG, ZhenZhong WANG, Xi REN, Wei ZHANG
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Publication number: 20200354685Abstract: A method for vascular regeneration comprises delivering endothelial cells to a lung scaffold, delivering perivascular cells to the lung scaffold, and providing a multiphase culture program to the scaffold. The multiphase culture program comprises a first phase including delivering an angiogenic medium, e.g., having 40-100 ng/ml of pro-angiogenic factors, and a second phase including delivering a stabilization medium, e.g., having 0.5-2% of serum and 1-20 ng/ml of angiogenic factors.Type: ApplicationFiled: July 23, 2020Publication date: November 12, 2020Inventors: Xi Ren, Harald C. Ott
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Patent number: 10731135Abstract: A method for vascular regeneration comprises delivering endothelial cells to a lung scaffold, delivering perivascular cells to the lung scaffold, and providing a multiphase culture program to the scaffold. The multiphase culture program comprises a first phase including delivering an angiogenic medium, e.g., having 40-100 ng/ml of pro-angiogenic factors, and a second phase including delivering a stabilization medium, e.g., having 0.5-2% of serum and 1-20 ng/ml of angiogenic factors.Type: GrantFiled: September 9, 2016Date of Patent: August 4, 2020Assignee: The General Hospital CorporationInventors: Xi Ren, Harald C. Ott
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Publication number: 20200031997Abstract: A transparent polyimide film with low birefringence, high glass transition temperature (Tg) consists of polyimide essentially comprising non-linear structure. This polyimide is prepared by a mixture of dianhydrides and diamines, comprising at least 10 mol % of asymmetric dianhydride and 50 mol % or less of meta-substituted diamine. This transparent polyimide film has a transmittance of 85% or more at 550 nm, a birefringence value of 0.005 or less and a Tg of 300° C. or more. The present invention relates to the low birefringence required electro-optic field, including the substrate and cover window for flexible OLED and LCD displays.Type: ApplicationFiled: November 16, 2018Publication date: January 30, 2020Inventors: Xi REN, Zhenzhong WANG, Yong HU, Wei ZHANG
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Patent number: 10499624Abstract: A uniaxial winding device having a main body, comprising a main shaft provided on an upper part of the main body, and a fixed seat provided on a lower part of the main body, wherein the upper part of the main shaft is provided with a tapered block and a fixing pin which limits the tapered block, wherein a spool and locknut are mounted on the main shaft on a first side of the tapered block, wherein a rocker arm which is able to rotate the main shaft is provided on a second side of the tapered block, wherein a resistance adjusting mechanism is provided on the main shaft which can adjust the rotational resistance on the spool.Type: GrantFiled: June 29, 2018Date of Patent: December 10, 2019Assignee: WEIHAI LANGBAO FISHING TACKEL CO., LTD.Inventor: Xi Ren Wang
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Publication number: 20190000055Abstract: An uniaxial winding device is disclosed, which includes a body which is equipped with a main shaft and a fixed seat on an upper and a lower side respectively, therein, wherein a tapered block and a limiting fixed pin are installed on the main shaft, wherein on the main shaft of one side of tapered block, a winding roll and a locknut are mounted, on the other side, a rocker arm which can rotate the main shaft shall prevail, and, there is also resistance adjusting mechanism which is used for adjusting the rotational resistance of the winding roll.Type: ApplicationFiled: June 29, 2018Publication date: January 3, 2019Applicant: WEIHAI LANGBAO FISHING TACKLE CO.,LTD.Inventor: XI REN WANG
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Publication number: 20170362266Abstract: The present application provides methods of functionalizing an organ or tissue of a mammal by administering a nutrient (e.g., peracetylated N-azido galactosamine Ac4GalNAz) to the mammal or by culturing an organ or tissue in a bioreactor containing such nutrient. The present application also provides methods of selectively functionalizing extracellular matrix (ECM) of an organ or tissue of a mammal by administering a nutrient (e.g., peracetylated N-azido galactosamine Ac4GalNAz) to the mammal. In some aspects, the present application provides a decellularized scaffold of a mammalian organ or tissue comprising an extracellular matrix, wherein the extracellular matrix of the decellularized scaffold is functionalized with a chemical group that is reactive in a bioorthogonal chemical reaction, such as an azide chemical group. The present application also provides biological prosthetic mesh and mammalian organs and tissues for transplantation prepared according to the methods of the application.Type: ApplicationFiled: June 15, 2017Publication date: December 21, 2017Inventors: Harald C. Ott, Xi Ren, Jordan P. Bloom, Konrad T. Rajab