Patents by Inventor Jiwen Zhang
Jiwen Zhang 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: 11953456Abstract: A method for separating oil-water two-phase NMR signals by using dynamic nuclear polarization comprising: using a combination of a non-selective free radical and a selective relaxation reagent to selectively enhance an NMR signal of an oil phase or a water phase, the relaxation reagent being capable of selectively suppressing dynamic polarization enhancement of the water phase or oil phase, thus achieving the polarization enhancement of a single fluid phase in the mixed fluid phases and realizing separation of the two-phase signals; or using a selective free radical to selectively enhance the NMR signal of the oil phase or the water phase, thus achieving the polarization enhancement of a single fluid phase in the mixed fluid phases and realizing separation of the oil-water two-phase NMR signals. The method is simple and easy to operate, has a short test time, and can efficiently separate NMR signals of oil and water phases.Type: GrantFiled: November 5, 2021Date of Patent: April 9, 2024Assignee: Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of SciencesInventors: Chaoyang Liu, Junfei Chen, Li Chen, Jiwen Feng, Zhen Zhang, Zhekai Zhang, Fang Chen
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Patent number: 11739591Abstract: Present disclosure relates to an adjustable roller shade. Adjustable roller shade includes: roller shade fabric winding shaft, weight, movable pulley, loop traction rope, a first and a second winders, and a first and a second tensioning wheels. Roller shade fabric is wound on roller shade fabric winding shaft forming upper edge of adjustable roller shade. Weight is attached to bottom of roller shade fabric forming lower edge of adjustable roller shade. Movable pulley is fixedly attached to one end of the roller shade fabric winding shaft. Loop traction rope is wound around the movable pulley, the first and second winders, and the first and second tensioning wheels. A driving motor drives first winder to rotate in different combination of directions to raise or lower upper edge and lower edge of adjustable roller shade, resulting adjustable roller shade to be opened or closed freely from both upper and lower edges.Type: GrantFiled: August 12, 2022Date of Patent: August 29, 2023Assignee: Nanyang Kunyuan Intelligent Technology Co., Ltd.Inventor: Jiwen Zhang
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Patent number: 11692393Abstract: The present disclosure relates to an adjustable roller shade. In certain embodiments, the adjustable roller shade includes: a roller shade fabric winding shaft, a roller shade fabric wound on the roller shade fabric winding shaft forming upper edge of adjustable roller shade, a weight bar attached to bottom of roller shade fabric forming lower edge of adjustable roller shade, a pair of movable pulleys, two pairs of upward lifting ropes and downward pulling ropes, four winders, four driving motors, and a controller. The controller controls rotations of four driving motors, independently and in concert. Each of the four winders is independently driven by four driving motors respectively. Rotations of four driving motors cause rotations of four winders. Ups and downs of the upper edge and the lower edge of the adjustable roller shade can be achieved by controlling the rotational directions of the four winders, separately and independently.Type: GrantFiled: September 1, 2022Date of Patent: July 4, 2023Assignee: Nanyang Kunyuan Intelligent Technology Co., Ltd.Inventor: Jiwen Zhang
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Publication number: 20230070549Abstract: The present disclosure relates to an adjustable roller shade. In certain embodiments, the adjustable roller shade includes: a roller shade fabric winding shaft, a roller shade fabric wound on the roller shade fabric winding shaft forming upper edge of adjustable roller shade, a weight bar attached to bottom of roller shade fabric forming lower edge of adjustable roller shade, a pair of movable pulleys, two pairs of upward lifting ropes and downward pulling ropes, four winders, four driving motors, and a controller. The controller controls rotations of four driving motors, independently and in concert. Each of the four winders is independently driven by four driving motors respectively. Rotations of four driving motors cause rotations of four winders. Ups and downs of the upper edge and the lower edge of the adjustable roller shade can be achieved by controlling the rotational directions of the four winders, separately and independently.Type: ApplicationFiled: September 1, 2022Publication date: March 9, 2023Inventor: JIWEN ZHANG
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Publication number: 20230066498Abstract: Present disclosure relates to an adjustable roller shade. Adjustable roller shade includes: roller shade fabric winding shaft, weight, movable pulley, loop traction rope, a first and a second winders, and a first and a second tensioning wheels. Roller shade fabric is wound on roller shade fabric winding shaft forming upper edge of adjustable roller shade. Weight is attached to bottom of roller shade fabric forming lower edge of adjustable roller shade. Movable pulley is fixedly attached to one end of the roller shade fabric winding shaft. Loop traction rope is wound around the movable pulley, the first and second winders, and the first and second tensioning wheels. A driving motor drives first winder to rotate in different combination of directions to raise or lower upper edge and lower edge of adjustable roller shade, resulting adjustable roller shade to be opened or closed freely from both upper and lower edges.Type: ApplicationFiled: August 12, 2022Publication date: March 2, 2023Inventor: JIWEN ZHANG
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Publication number: 20220364412Abstract: Present disclosure relates to several adjustable roller shades. Adjustable roller shade includes: roller shade fabric winding shaft, weight, movable pulley, two traction ropes, and four winders. A roller shade fabric is wound on roller shade fabric winding shaft forming upper edge of adjustable roller shade. Weight is attached to bottom of roller shade fabric forming lower edge of adjustable roller shade. Movable pulley is fixedly attached to one end of the roller shade fabric winding shaft. The traction ropes are wound around the movable pulley and the four winders. Each of the four winders is driven by a driving motor respectively and the four winders rotate in different combination of directions to raise or lower both upper edge and lower edge of adjustable roller shade, resulting the adjustable roller shade to be opened or closed freely from both upper and lower edges of the adjustable roller shade.Type: ApplicationFiled: August 25, 2021Publication date: November 17, 2022Inventor: JIWEN ZHANG
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Publication number: 20220364413Abstract: Present disclosure relates to several adjustable roller shades. Adjustable roller shade includes: roller shade fabric winding shaft, weight, movable pulley, loop traction rope, two winders and two tensioning wheels. A roller shade fabric is wound on roller shade fabric winding shaft forming upper edge of adjustable roller shade. Weight is attached to bottom of roller shade fabric forming lower edge of adjustable roller shade. Movable pulley is fixedly attached to one end of the roller shade fabric winding shaft. Loop traction rope is wound around the movable pulley, two winders and two tensioning wheels. One or more driving motors drive the pair of winders to rotate in different combination of directions to raise or lower both upper edge and lower edge of adjustable roller shade, resulting the adjustable roller shade to be opened or closed freely from both upper and lower edges of the adjustable roller shade.Type: ApplicationFiled: August 25, 2021Publication date: November 17, 2022Inventor: JIWEN ZHANG
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Publication number: 20220073653Abstract: A cubic cyclodextrin framework-RGD composition (RGD-COF) and a preparation method therefor. Specifically, the cyclodextrin framework-RGD composition contains a cyclodextrin framework (COF) having a cubic structure and RGD, and can escape from phagocytosis and clearance of macrophages, enhance migration and adhesiveness to damaged blood vessels, and efficiently target and aggregate activated platelets at damaged blood vessel sites, having application prospects on targeted diagnosis and treatment of diseases associated with uncontrolled hemorrhage, atherosclerosis and cerebral apoplexy. By utilizing the advantage that a cyclodextrin-metal organic framework (CD-MOF) has controllable dimensions, a cubic cyclodextrin framework-RGD composition for nanoscale intravenous injection or microscale topically external use is provided.Type: ApplicationFiled: January 15, 2020Publication date: March 10, 2022Applicant: SHANGHAI INSTITUTE OF MATERIA MEDICA, CHINESE ACADEMY OF SCIENCESInventors: Jiwen ZHANG, Yaping HE, Yong SU, Jian XU, Li WU, Xian SUN
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Patent number: 11142947Abstract: Present disclosure relates to several adjustable roller shades. Adjustable roller shade includes: roller shade fabric winding shaft, weight, movable pulley, traction rope, and a pair of winders. A roller shade fabric is wound on roller shade fabric winding shaft 1 forming upper edge of adjustable roller shade. Weight is attached to bottom of roller shade fabric forming lower edge of adjustable roller shade. Movable pulley is fixedly attached to one end of the roller shade fabric winding shaft. The traction rope is wound around the movable pulley and pair of winders and pair of tensioning wheels. One or more driving motors drive the pair of winders to rotate in different combination of directions to raise or lower both upper edge and lower edge of adjustable roller shade, resulting the adjustable roller shade to be opened or closed freely from both upper and lower edges of the adjustable roller shade.Type: GrantFiled: May 11, 2021Date of Patent: October 12, 2021Assignee: Nanyang Kunyuan Intelligent Technology Co., Ltd.Inventor: Jiwen Zhang
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Patent number: 10931227Abstract: A light-heat gathering solar energy device belonging to the energy device, which is a device for decreasing the area occupied by the solar energy device and increasing the light-heat absorbing efficiency of the sun light, comprising: a bracket structure, which is a structural member having a hollow body; at least one solar energy absorbing device disposed within the hollow body of said bracket structure, the hollow body is formed by the container wall having a geometry structure of upper-wide lower-narrow shape, and at least one cup-shaped bottom structure is disposed therein, said container wall is composed of an outer wall and an inner wall, said outer wall is made of a light-heat absorbing material, said inner wall is made of a light reflecting material, allowing invisible light to penetrate, inward and downward reflection is enabled in the energy absorbing device through the inner wall when the sun light irradiates from the top to the bottom such that the light-heat energy gathering effect is produced witType: GrantFiled: March 15, 2007Date of Patent: February 23, 2021Inventors: Jiwen Zhang, Xinyun Zhang
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Publication number: 20150245992Abstract: Provided in the present invention is a pharmaceutic osmotic pump preparation comprising a tablet core, wherein the tablet core contains drugs (or pharmaceutically active ingredients) and materials forming a chamber structure; and a coating film coating the tablet core where a drug release hole is set; wherein when the pharmaceutic osmotic pump preparation releases drugs in water or an aqueous medium, the materials forming the chamber structure lead to the formation of a superfine chamber structure in the coating film, and the total volume of the superfine chamber structure Vb gradually increases over the releasing time, but the releasing rate R (or release amount A) of the pharmaceutically active ingredients is proportional to Vb. The osmotic pump preparation of the present invention is suitable for water-soluble drugs and water-insoluble drugs, and especially is suitable for the controlled release of low solubility drugs or pH dependent drugs.Type: ApplicationFiled: October 16, 2013Publication date: September 3, 2015Inventors: Jiwen Zhang, Li Wu, Xianzhen Yin, Zhen Guo, Haiyan Li
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Patent number: 8049063Abstract: The present invention provides a kind of rice endogenous bentazon and sulfonylurea herbicide resistant gene (Cyp81A6 gene), and its functional conservative variants, the biological activity subfragments or derivatives with the same function. It also provides a kind of method to prevent the selling mixtures during hybrid seed production. It also provides the novel means of the directional genetic manipulation and the improvement of biological traits.Type: GrantFiled: June 28, 2005Date of Patent: November 1, 2011Assignees: Zhejiang University, Wuhan Fortune Science and Technology Co., Ltd.Inventors: Jumin Tu, Jiwen Zhang, Gang Pan, Xianyin Zhang, Xiaozhi Wu
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Publication number: 20090293939Abstract: A light-heat gathering solar energy device belonging to the energy device, which is a device for decreasing the area occupied by the solar energy device and increasing the light-heat absorbing efficiency of the sun light, comprising: a bracket structure, which is a structural member having a hollow body; at least one solar energy absorbing device disposed within the hollow body of said bracket structure, the hollow body is formed by the container wall having a geometry structure of upper-wide lower-narrow shape, and at least one cup-shaped bottom structure is disposed therein, said container wall is composed of an outer wall and an inner wall, said outer wall is made of a light-heat absorbing material, said inner wall is made of a light reflecting material, allowing invisible light to penetrate, inward and downward reflection is enabled in the energy absorbing device through the inner wall when the sun light irradiates from the top to the bottom such that the light-heat energy gathering effect is produced witType: ApplicationFiled: March 15, 2007Publication date: December 3, 2009Inventors: Jiwen Zhang, Xinyun Zhang
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Publication number: 20080313772Abstract: The present invention provides a kind of rice endogenous bentazon and sulfonylurea herbicide resistant gene (Cyp81A6 gene), and its functional conservative variants, the biological activity subfragments or derivatives with the same function. It also provides a kind of method to prevent the selling mixtures during hybrid seed production. It also provides the novel means of the directional genetic manipulation and the improvement of biological traits.Type: ApplicationFiled: June 28, 2005Publication date: December 18, 2008Applicant: Zhejiang UniversityInventors: Jumin Tu, Jiwen Zhang, Gang Pan, Xianyin Zhang, Xiaozhi Wu