Patents by Inventor Yubo Ma
Yubo Ma 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: 20240066182Abstract: The present disclosure provides a fiber membrane and a preparation method and use thereof, and belongs to the field of biological materials. The fiber membrane includes a fiber with a core-shell structure, where a core of the fiber includes simvastatin and a first spinnable polymer, and a shell of the fiber includes hydroxyapatite and a second spinnable polymer. In the fiber, a release of the simvastatin mainly depends on a rate of water invasion. After water invades the fiber, the simvastatin in the fiber leaves the fiber with the diffusion of water. In the present disclosure, a barrier function of the shell prevents moisture from entering the core. Therefore, the simvastatin in the core cannot leave the fiber with the diffusion of water molecules in an early stage, and a release rate of drugs is slowed down in the early stage, thereby controlling sustained release of the drugs.Type: ApplicationFiled: November 10, 2022Publication date: February 29, 2024Applicant: SHANGHAI RUIZHIKANG MEDICAL TECHNOLOGY CO., LTD.Inventors: Xiaohong CHEN, Yubo LIU, Honglei ZHOU, Wei LI, Fengcang MA, Shaoli FU, Guosen SHAO, Haochen WU
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Publication number: 20240066177Abstract: The present disclosure provides a hydrophilic fiber membrane with a sustained-release drug, and belongs to the field of biological materials. The present disclosure provides a hydrophilic fiber membrane with a sustained-release drug, including a fiber with a core-shell structure, where a core of the fiber includes curcumin and a first spinnable polymer, and a shell of the fiber includes polyethylene glycol and a second spinnable polymer; and in the shell, the polyethylene glycol and the second spinnable polymer have a mass ratio of not greater than 1:12. In the present disclosure, the fiber membrane has a core-shell structure, the curcumin is provided in the core, and the shell prevents a rapid release of the curcumin in an early stage, thereby delaying a release rate of the curcumin to prevent the drug from forming a burst release in the early stage and causing toxic reactions.Type: ApplicationFiled: November 11, 2022Publication date: February 29, 2024Applicant: SHANGHAI RUIZHIKANG MEDICAL TECHNOLOGY CO., LTD.Inventors: Xiaohong CHEN, Yubo LIU, Honglei ZHOU, Wei LI, Fengcang MA, Shaoli FU, Guosen SHAO, Haochen WU
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Publication number: 20240067036Abstract: Disclosed is a charging station capable of realizing mutual capacity aid, which comprises a plurality of charging units, a power bus and a mutual capacity aid bus. Each charging unit is powered by the power bus, and each charging unit provides mutual aid capacity for another charging unit through the mutual capacity aid bus or receives mutual aid capacity from other charging units through the mutual capacity aid bus. The charging station can realize rapid charging of electric vehicles, and can also realize mutual capacity aid.Type: ApplicationFiled: June 4, 2021Publication date: February 29, 2024Applicants: JIANGSU ELECTRIC POWER RESEARCH INSTITUTE CO., LTD., STATE GRID JIANGSU ELECTRIC POWER CO., LTD. RESEARCH INSTITUTEInventors: Tiankui SUN, Yubo YUAN, Mingming SHI, Xin FANG, Jinggang YANG, Shuyi ZHUANG, Xiaodong YUAN, Chenyu ZHANG, Lei GAO, Peng LI, Yaojia MA, Shu CHEN, Jing CHEN, Qun LI, Jian LIU
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Patent number: 8809574Abstract: The present invention discloses a method for preparing isocyanates by liquid-phase catalytic thermal cracking. In this method, in a reaction-rectification thermal cracking reactor, using a catalyst composition comprising a superfine powder metal oxide catalyst and an ionic liquid, an alkyl or aryl dialkylurethane, or multialkylurethane being a reactant is liquid-phase thermal cracked for a reaction time of 0.5-3 h under a reaction temperature of 160-220° C. and an absolute pressure of 1000-8000 Pa so as to prepare the corresponding isocyanate. The invention has the characteristics of low thermal cracking temperature, high yield of target products, relatively simple reaction apparatus and good universality for substrates (the yields of HDI, MDI, TDI, HMDI, NDI and IPDI or the like are all>85%) and the like.Type: GrantFiled: December 14, 2009Date of Patent: August 19, 2014Assignee: Lanzhou Institute of Chemical Physics, Chinese Academy of SciencesInventors: Youquan Deng, Xiaoguang Guo, Feng Shi, Qinghua Zhang, Xiangyuan Ma, Liujin Lu, Jian Li, Xiong Tian, Yubo Ma, Jianpeng Shang, Xinjiang Cui, Liguo L Wang, Hongzhe Zhang
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Patent number: 8450518Abstract: The present invention pertains to a novel method for preparing a carbamate, in which the method comprises reacting an aliphatic substituted urea and/or its derivatives, with a hydroxyl group containing compound to obtain a carbamate. In addition, the present invention provides a novel catalyst which is suitable for catalyzing the reaction to form a carbamate, and a method for preparing the novel catalyst. The method of the present invention for preparing a carbamate does not involve the application of carbon monoxide which is toxic, and the reaction conditions are relatively mild with high catalytic activity, high reaction selectivity of the catalyst, and a relatively short reaction time. Furthermore, the catalyst is separated from the reaction system and reused easily, which will facilitates scale up and industrial application.Type: GrantFiled: April 12, 2010Date of Patent: May 28, 2013Assignee: Bayer MaterialScience AGInventors: Youquan Deng, Liguo Wang, Yubo Ma, Xiaoguang Guo, Stefan Wershofen, Stephan Klein, Hongchao Li
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Patent number: 8338634Abstract: The present invention pertains to a catalyst for the synthesis of organic alkyl carbamates, the method for preparing the same and the use thereof. The catalyst comprises a catalytically active component and a catalyst support, and the catalytically active component being carried by the catalyst support, wherein the catalytically active component comprises a transition metal oxide, and the general formula of the transition metal oxide is EOx, wherein E is selected from transition metal element and x is in the range of 0.5-4.Type: GrantFiled: February 13, 2009Date of Patent: December 25, 2012Assignee: Bayer MaterialScience AGInventors: Youquan Deng, Yubo Ma, Liguo Wang, Xiaoguang Guo, Shiguo Zhang, Yude He, Stefan Wershofen, Stephan Klein, Zhiping Zhou
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Publication number: 20110160478Abstract: The present invention pertains to a catalyst for the synthesis of organic alkyl carbamates, the method for preparing the same and the use thereof. The catalyst comprises a catalytically active component and a catalyst support, and the catalytically active component being carried by the catalyst support, wherein the catalytically active component comprises a transition metal oxide, and the general formula of the transition metal oxide is EOx, wherein E is selected from transition metal element and x is in the range of 0.5-4.Type: ApplicationFiled: February 13, 2009Publication date: June 30, 2011Inventors: Youquan Deng, Yubo Ma, Liguo Wang, Xiaoguang Guo, Shigo Zhang, Yude He, Stefan Wershofen, Stephan Klein, Zhiping Zhou
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Publication number: 20110021810Abstract: The present invention discloses a method for preparing isocyanates by liquid-phase catalytic thermal cracking. In this method, in a reaction-rectification thermal cracking reactor, using a catalyst composition comprising a superfine powder metal oxide catalyst and an ionic liquid, an alkyl or aryl dialkylurethane, or multialkylurethane being a reactant is liquid-phase thermal cracked for a reaction time of 0.5-3 h under a reaction temperature of 160-220° C. and an absolute pressure of 1000-8000 Pa so as to prepare the corresponding isocyanate. The invention has the characteristics of low thermal cracking temperature, high yield of target products, relatively simple reaction apparatus and good universality for substrates (the yields of HDI, MDI, TDI, HMDI, NDI and IPDI or the like are all >85%) and the like.Type: ApplicationFiled: December 14, 2009Publication date: January 27, 2011Applicant: LANZHOU INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCESInventors: Youquan DENG, Xiaoguang GUO, Feng SHI, Qinghua ZHANG, Xiangyuan MA, Liujin LU, Jian LI, Xiong TIAN, Yubo MA, Jianpeng SHANG, Xinjiang CUI, Liguo L. WANG, Hongzhe ZHANG
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Publication number: 20100274041Abstract: The present invention pertains to a novel method for preparing a carbamate, in which the method comprises reacting an aliphatic substituted urea and/or its derivatives, with a hydroxyl group containing compound to obtain a carbamate. In addition, the present invention provides a novel catalyst which is suitable for catalyzing the reaction to form a carbamate, and a method for preparing the novel catalyst. The method of the present invention for preparing a carbamate does not involve the application of carbon monoxide which is toxic, and the reaction conditions are relatively mild with high catalytic activity, high reaction selectivity of the catalyst, and a relatively short reaction time. Furthermore, the catalyst is separated from the reaction system and reused easily, which will facilitates scale up and industrial application.Type: ApplicationFiled: April 12, 2010Publication date: October 28, 2010Applicant: Bayer MaterialScience AGInventors: Youquan Deng, Liguo Wang, Yubo Ma, Xiaoguang Guo, Stefan Wershofen, Stephan Klein, Hongchao Li