Patents by Inventor Lihong Guo
Lihong Guo 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: 11972653Abstract: A lock, a vehicle parking system, and a vehicle parking method are provided. The lock includes a main body, a lock switch, a lock controller, a lock communication circuit, and a battery. The battery is connected to the lock switch, the lock controller, and the lock communication circuit, and configured to supply electrical energy to the lock switch, the lock controller, and the lock communication circuit. The lock communication circuit is connected to the lock controller, and transmits a locking instruction or an unlocking instruction to the lock controller when receiving the locking instruction or the unlocking instruction from a second device located outside the lock. The lock controller is connected to the lock switch connected to the main body, and the lock controller controls, when receiving the locking instruction or the unlocking instruction, the main body to perform a locking operation or an unlocking operation through the lock switch.Type: GrantFiled: March 12, 2020Date of Patent: April 30, 2024Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Shengwei Yang, Qi Zhang, Dong Wang, Jinlong Zheng, Lihong Yang, Sa Li, Xingjun Shu, Yajun Guo, Yafeng Wang, Jianye Tang, Gaowei Chen, Yanchao Zhang, Desheng Xiang, Xi Chen
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Patent number: 11111335Abstract: Methods for preparing water soluble, non-peptidic polymers carrying carboxyl functional groups, particularly carboxylic acid functionalized poly(ethylene glycol) (PEG) polymers are disclosed, as are the products of these methods. In general, an ester reagent R(C?O)OR?, wherein R? is a tertiary group and R comprises a functional group X, is reacted with a water soluble, non-peptidic polymer POLY-Y, where Y is a functional group which reacts with X to form a covalent bond, to form a tertiary ester of the polymer, which is then treated with a strong base in aqueous solution, to form a carboxylate salt of the polymer. Typically, this carboxylate salt is then treated with an inorganic acid in aqueous solution, to convert the carboxylate salt to a carboxylic acid, thereby forming a carboxylic acid functionalized polymer.Type: GrantFiled: June 5, 2018Date of Patent: September 7, 2021Assignee: Nektar TherapeuticsInventors: J. Milton Harris, Antoni Kozlowski, Lihong Guo
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Publication number: 20180282476Abstract: Methods for preparing water soluble, non-peptidic polymers carrying carboxyl functional groups, particularly carboxylic acid functionalized poly(ethylene glycol) (PEG) polymers are disclosed, as are the products of these methods. In general, an ester reagent R(C?O)OR?, wherein R? is a tertiary group and R comprises a functional group X, is reacted with a water soluble, non-peptidic polymer POLY-Y, where Y is a functional group which reacts with X to form a covalent bond, to form a tertiary ester of the polymer, which is then treated with a strong base in aqueous solution, to form a carboxylate salt of the polymer. Typically, this carboxylate salt is then treated with an inorganic acid in aqueous solution, to convert the carboxylate salt to a carboxylic acid, thereby forming a carboxylic acid functionalized polymer.Type: ApplicationFiled: June 5, 2018Publication date: October 4, 2018Inventors: J. Milton Harris, Antoni Kozlowski, Lihong Guo
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Patent number: 10011682Abstract: Methods for preparing water soluble, non-peptidic polymers carrying carboxyl functional groups, particularly carboxylic acid functionalized poly(ethylene glycol) (PEG) polymers are disclosed, as are the products of these methods. In general, an ester reagent R(C?O)OR?, wherein R? is a tertiary group and R comprises a functional group X, is reacted with a water soluble, non-peptidic polymer POLY-Y, where Y is a functional group which reacts with X to form a covalent bond, to form a tertiary ester of the polymer, which is then treated with a strong base in aqueous solution, to form a carboxylate salt of the polymer. Typically, this carboxylate salt is then treated with an inorganic acid in aqueous solution, to convert the carboxylate salt to a carboxylic acid, thereby forming a carboxylic acid functionalized polymer.Type: GrantFiled: June 19, 2013Date of Patent: July 3, 2018Assignee: NEKTAR THERAPEUTICSInventors: J. Milton Harris, Antoni Kozlowski, Lihong Guo
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Patent number: 9114371Abstract: A system and process for melamine production by gas-phase quenching method and its process are provided. The said system includes a urea scrubber, after which a fluidized bed reactor, a hot-air cooler, a hot-air filter, a crystallizer and a melamine collector are installed in series successively, where the said melamine collector is connected to the said urea scrubber and the said fluidized bed reactor is connected to a carrier gas pre-heater which is connected to a carrier gas compressor; the said system further includes a gas-liquid separator which is connected to the said urea scrubber which is connected to a crystallizer; wherein a cool air blower is provided between the said gas-liquid separator and the crystallizer. The production system of the invention has the advantages of high productivity, stable operation, low energy consumption, low investment and high economic value of tail gas.Type: GrantFiled: April 20, 2012Date of Patent: August 25, 2015Assignees: BEIJING EDGEIN TECHNOLOGY CO., LTD., SICHUAN GOLDEN-ELEPHANT SINCERITY CHEMICAL CO., LTD.Inventors: Yin Tang, Zhongwu Yuan, Yuande Gong, Mingda Yin, Xiuzhen Yang, Duanyang Chen, Jianglin Yi, Lin Lei, Chaohui Liu, Xuchu Li, Xikun Xiong, Hui Chen, Deli Kong, Wenmao Jiang, Gang Li, Lihong Guo, Zhongyun Li, Guangsong Lan, Guohua Yuan, Xiangdong Kuang
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Publication number: 20130324720Abstract: A system and process for melamine production by gas-phase quenching method and its process are provided. The said system includes a urea scrubber, after which a fluidized bed reactor, a hot-air cooler, a hot-air filter, a crystallizer and a melamine collector are installed in series successively, where the said melamine collector is connected to the said urea scrubber and the said fluidized bed reactor is connected to a carrier gas pre-heater which is connected to a carrier gas compressor; the said system further includes a gas-liquid separator which is connected to the said urea scrubber which is connected to a crystallizer; wherein a cool air blower is provided between the said gas-liquid separator and the crystallizer. The production system of the invention has the advantages of high productivity, stable operation, low energy consumption, low investment and high economic value of tail gas.Type: ApplicationFiled: April 20, 2012Publication date: December 5, 2013Applicants: SICHUAN GOLDEN-ELEPHANT SINCERITY CHEMICAL CO.,LTD, BEIJING EDGEIN TECHNOLOGY CO., LTD.Inventors: Yin Tang, Zhongwu Yuan, Yuande Gong, Mingda Yin, Xiuzhen Yang, Duanyang Chen, Jianglin Yi, Lin Lei, Chaohui Liu, Xuchu Li, Xikun Xiong, Hui Chen, Deli Kong, Wenmao Jiang, Gang Li, Lihong Guo, Zhongyun Li, Guangsong Lan, Guohua Yuan, Xiangdong Kuang
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Publication number: 20130281634Abstract: Methods for preparing water soluble, non-peptidic polymers carrying carboxyl functional groups, particularly carboxylic acid functionalized poly(ethylene glycol) (PEG) polymers are disclosed, as are the products of these methods. In general, an ester reagent R(C?O)OR?, wherein R? is a tertiary group and R comprises a functional group X, is reacted with a water soluble, non-peptidic polymer POLY-Y, where Y is a functional group which reacts with X to form a covalent bond, to form a tertiary ester of the polymer, which is then treated with a strong base in aqueous solution, to form a carboxylate salt of the polymer. Typically, this carboxylate salt is then treated with an inorganic acid in aqueous solution, to convert the carboxylate salt to a carboxylic acid, thereby forming a carboxylic acid functionalized polymer.Type: ApplicationFiled: June 19, 2013Publication date: October 24, 2013Applicant: NEKTAR THERAPEUTICSInventors: J. Milton Harris, Antoni Kozlowski, Lihong Guo
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Patent number: 8183338Abstract: The invention provides a sterically hindered polymers and conjugates formed therefrom that comprise a water-soluble and non-peptidic polymer backbone having at least one terminus covalently bonded to an alkanoic acid or alkanoic acid derivative prior to conjugation, wherein the carbon adjacent to the carbonyl group of the acid or acid derivative group has an alkyl or aryl group pendent thereto. The steric effects of the alkyl or aryl group allow greater control of the hydrolytic stability of polymer derivatives. The polymer backbone may be poly(ethylene glycol).Type: GrantFiled: May 3, 2011Date of Patent: May 22, 2012Assignee: Nektar TherapeuticsInventors: Michael D. Bentley, Xuan Zhao, Xiaoming Shen, Lihong Guo
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Publication number: 20120041155Abstract: Methods for preparing water soluble, non-peptidic polymers carrying carboxyl functional groups, particularly carboxylic acid functionalized poly(ethylene glycol) (PEG) polymers are disclosed, as are the products of these methods. In general, an ester reagent R(C?O)OR?, wherein R? is a tertiary group and R comprises a functional group X, is reacted with a water soluble, non-peptidic polymer POLY-Y, where Y is a functional group which reacts with X to form a covalent bond, to form a tertiary ester of the polymer, which is then treated with a strong base in aqueous solution, to form a carboxylate salt of the polymer. Typically, this carboxylate salt is then treated with an inorganic acid in aqueous solution, to convert the carboxylate salt to a carboxylic acid, thereby forming a carboxylic acid functionalized polymer.Type: ApplicationFiled: October 21, 2011Publication date: February 16, 2012Applicant: Nektar TherapeuticsInventors: J. Milton Harris, Antoni Kozlowski, Lihong Guo
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Patent number: 8067505Abstract: Methods for preparing water soluble, non-peptidic polymers carrying carboxyl functional groups, particularly carboxylic acid functionalized poly(ethylene glycol) (PEG) polymers are disclosed, as are the products of these methods. In general, an ester reagent R(C?0)OR?, wherein R? is a tertiary group and R comprises a functional group X, is reacted with a water soluble, non-peptidic polymer POLY-Y, where Y is a functional group which reacts with X to form a covalent bond, to form a tertiary ester of the polymer, which is then treated with a strong base in aqueous solution, to form a carboxylate salt of the polymer. Typically, this carboxylate salt is then treated with an inorganic acid in aqueous solution, to convert the carboxylate salt to a carboxylic acid, thereby forming a carboxylic acid functionalized polymer.Type: GrantFiled: February 9, 2011Date of Patent: November 29, 2011Assignee: Nektar TherapeuticsInventors: J. Milton Harris, Antoni Kozlowski, Lihong Guo
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Publication number: 20110207896Abstract: The invention provides a sterically hindered polymers and conjugates formed therefrom that comprise a water-soluble and non-peptidic polymer backbone having at least one terminus covalently bonded to an alkanoic acid or alkanoic acid derivative prior to conjugation, wherein the carbon adjacent to the carbonyl group of the acid or acid derivative group has an alkyl or aryl group pendent thereto. The steric effects of the alkyl or aryl group allow greater control of the hydrolytic stability of polymer derivatives. The polymer backbone may be poly(ethylene glycol).Type: ApplicationFiled: May 3, 2011Publication date: August 25, 2011Applicant: Nektar TherapeuticsInventors: Michael David Bentley, Xuan Zhao, Xiaoming Shen, Lihong Guo
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Patent number: 7960502Abstract: The invention provides a sterically hindered polymer that comprises a water-soluble and non-peptidic polymer backbone having at least one terminus covalently bonded to an alkanoic acid or alkanoic acid derivative, wherein the carbon adjacent to the carbonyl group of the acid or acid derivative group has an alkyl or aryl group pendent thereto. The steric effects of the alkyl or aryl group allow greater control of the hydrolytic stability of polymer derivatives. The polymer backbone may be poly(ethylene glycol).Type: GrantFiled: January 19, 2010Date of Patent: June 14, 2011Assignee: Nektar TheapeuticsInventors: Michael D. Bentley, Xuan Zhao, Xiaoming Shen, Lihong Guo
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Publication number: 20110130539Abstract: Methods for preparing water soluble, non-peptidic polymers carrying carboxyl functional groups, particularly carboxylic acid functionalized poly(ethylene glycol) (PEG) polymers are disclosed, as are the products of these methods. In general, an ester reagent R(C?0)OR?, wherein R? is a tertiary group and R comprises a functional group X, is reacted with a water soluble, non-peptidic polymer POLY-Y, where Y is a functional group which reacts with X to form a covalent bond, to form a tertiary ester of the polymer, which is then treated with a strong base in aqueous solution, to form a carboxylate salt of the polymer. Typically, this carboxylate salt is then treated with an inorganic acid in aqueous solution, to convert the carboxylate salt to a carboxylic acid, thereby forming a carboxylic acid functionalized polymer.Type: ApplicationFiled: February 9, 2011Publication date: June 2, 2011Applicant: Nektar TherapeuticsInventors: J. Milton Harris, Antoni Kozlowski, Lihong Guo
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Publication number: 20100121019Abstract: The invention provides a sterically hindered polymer that comprises a water-soluble and non-peptidic polymer backbone having at least one terminus covalently bonded to an alkanoic acid or alkanoic acid derivative, wherein the carbon adjacent to the carbonyl group of the acid or acid derivative group has an alkyl or aryl group pendent thereto. The steric effects of the alkyl or aryl group allow greater control of the hydrolytic stability of polymer derivatives. The polymer backbone may be poly(ethylene glycol).Type: ApplicationFiled: January 19, 2010Publication date: May 13, 2010Applicant: Nektar TherapeuticsInventors: Michael David Bentley, Xuan Zhao, Xiaoming Shen, Lihong Guo
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Patent number: 7674879Abstract: The invention provides a sterically hindered polymer that comprises a water-soluble and non-peptidic polymer backbone having at least one terminus covalently bonded to an alkanoic acid or alkanoic acid derivative, wherein the carbon adjacent to the carbonyl group of the acid or acid derivative group has an alkyl or aryl group pendent thereto. The steric effects of the alkyl or aryl group allow greater control of the hydrolytic stability of polymer derivatives. The polymer backbone may be poly(ethylene glycol).Type: GrantFiled: June 25, 2008Date of Patent: March 9, 2010Assignee: Nektar TherapeuticsInventors: Michael D. Bentley, Xuan Zhao, Xiaoming Shen, Lihong Guo
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Publication number: 20080262166Abstract: The invention provides a sterically hindered polymer that comprises a water-soluble and non-peptidic polymer backbone having at least one terminus covalently bonded to an alkanoic acid or alkanoic acid derivative, wherein the carbon adjacent to the carbonyl group of the acid or acid derivative group has an alkyl or aryl group pendent thereto. The steric effects of the alkyl or aryl group allow greater control of the hydrolytic stability of polymer derivatives. The polymer backbone may be poly(ethylene glycol).Type: ApplicationFiled: June 25, 2008Publication date: October 23, 2008Applicant: Nektar Therapeutics AL, CorporationInventors: Michael David Bentley, Xuan Zhao, Xiaoming Shen, Lihong Guo
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Patent number: 7405266Abstract: The invention provides a sterically hindered polymer that comprises a water-soluble and non-peptidic polymer backbone having at least one terminus covalently bonded to an alkanoic acid or alkanoic acid derivative, wherein the carbon adjacent to the carbonyl group of the acid or acid derivative group has an alkyl or aryl group pendent thereto. The steric effects of the alkyl or aryl group allow greater control of the hydrolytic stability of polymer derivatives. The polymer backbone may be poly(ethylene glycol).Type: GrantFiled: March 9, 2007Date of Patent: July 29, 2008Assignee: Nektar Therapeutics AL, CorporationInventors: Michael David Bentley, Xuan Zhao, Xiaoming Shen, Lihong Guo
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Publication number: 20070179274Abstract: The invention provides a sterically hindered polymer that comprises a water-soluble and non-peptidic polymer backbone having at least one terminus covalently bonded to an alkanoic acid or alkanoic acid derivative, wherein the carbon adjacent to the carbonyl group of the acid or acid derivative group has an alkyl or aryl group pendent thereto. The steric effects of the alkyl or aryl group allow greater control of the hydrolytic stability of polymer derivatives. The polymer backbone may be poly(ethylene glycol).Type: ApplicationFiled: March 9, 2007Publication date: August 2, 2007Inventors: Michael Bentley, Xuan Zhao, Xiaoming Shen, Lihong Guo
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Patent number: 7205380Abstract: The invention provides a sterically hindered polymer that comprises a water-soluble and non-peptidic polymer backbone having at least one terminus covalently bonded to an alkanoic acid or alkanoic acid derivative, wherein the carbon adjacent to the carbonyl group of the acid or acid derivative group has an alkyl or aryl group pendent thereto. The steric effects of the alkyl or aryl group allow greater control of the hydrolytic stability of polymer derivatives. The polymer backbone may be poly(ethylene glycol).Type: GrantFiled: November 1, 2005Date of Patent: April 17, 2007Assignee: Nektar Therapeutics AL, CorporationInventors: Michael David Bentley, Xuan Zhao, Xiaoming Shen, Lihong Guo
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Publication number: 20060069237Abstract: The invention provides a sterically hindered polymer that comprises a water-soluble and non-peptidic polymer backbone having at least one terminus covalently bonded to an alkanoic acid or alkanoic acid derivative, wherein the carbon adjacent to the carbonyl group of the acid or acid derivative group has an alkyl or aryl group pendent thereto. The steric effects of the alkyl or aryl group allow greater control of the hydrolytic stability of polymer derivatives. The polymer backbone may be poly(ethylene glycol).Type: ApplicationFiled: November 1, 2005Publication date: March 30, 2006Inventors: Michael Bentley, Xuan Zhao, Xiaoming Shen, Lihong Guo