Patents by Inventor Yulin Zhao
Yulin Zhao 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: 11945271Abstract: A rigid-flexible coupling multi-degree-of-freedom walking position-adjusting leg unit and a hybrid robot platform thereof is provided and includes a vertical rigid-flexible coupling multi-degree-of-freedom walking position-adjusting leg unit and a horizontal rigid-flexible coupling multi-degree-of-freedom walking position-adjusting leg unit, which both include a moving device, a moving drive, a steering frame, a lifting frame, a spring device and a driving differential wheel set, in combination with a frame, a driver set, a battery pack and a control box, forming a multi-degree-of-freedom parallel mechanism platform. The hybrid robot platform including the rigid-flexible coupling multi-degree-of-freedom walking position-adjusting leg unit as provided by the present disclosure has functions of a rigid position adjustment, an elastic suspension and a rigid-flexible coupling position adjustment, and can automatically adapt to a working condition of the uneven ground.Type: GrantFiled: August 24, 2021Date of Patent: April 2, 2024Assignee: YANSHAN UNIVERSITYInventors: Yulin Zhou, Shuyang Shi, Lihui Zhao, Xuesong Qiu, Zongqiang Feng, Yi Liu
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Patent number: 11946374Abstract: The disclosure relates to an omni-directional horizontally oriented deflecting tool for a coiled tubing, which includes an inner central pipe, an outer central pipe, a conical outer cylinder, a piston outer cylinder, an anchoring mechanism, a sealing mechanism, a reversing mechanism and a steering mechanism. The anchoring mechanism includes a cone, an O-shaped sealing ring I, a cone spring, a slip, a slip spring, a slip seat, a claw I and a pin shaft I, and the sealing mechanism includes a piston, an O-shaped sealing ring II, a claw II, a pin shaft II, an upper rubber cylinder seat, a rubber cylinder, a connecting cylinder, a lower rubber cylinder seat and a gasket.Type: GrantFiled: July 5, 2023Date of Patent: April 2, 2024Assignee: Southwest Petroleum UniversityInventors: Yang Tang, Miantao Guan, Yulin Zhang, Peng Zhao, Guorong Wang, Jinhai Zhao, Qingyou Liu, Jinzhong Wang, Xiang Gao, Yufa He, Hu Deng, Liming Fan, Rutao Ma
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Patent number: 10982391Abstract: A method of enhancing paper strength properties is provided. The method comprises treating a paper sheet precursor with a polyaluminum salt, and a strengthening agent, wherein the strengthening agent comprises a dialdehyde-modified polyacrylamide copolymer and a polyacrylamide copolymer. The polyaluminum salt may be polyaluminum chloride. The methods have been demonstrated to provide, among other things, improvements in retention, strength, and dewatering.Type: GrantFiled: May 31, 2017Date of Patent: April 20, 2021Assignee: ECOLAB USA INC.Inventors: Meng Zhang, Yulin Zhao, Na Xu
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Patent number: 10844541Abstract: The present invention relates to a release aid that includes at least one succinic anhydride derivative for use in a papermaking process. For example, the release aid of the present invention is particularly useful for use in a paperweb creping process. The present invention also relates to a paperweb creping method that includes a release aid comprising at least one succinic anhydride.Type: GrantFiled: November 29, 2016Date of Patent: November 24, 2020Assignee: ECOLAB USA INC.Inventors: Jia Wu, Yulin Zhao, Xiao Zhang
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Patent number: 10704201Abstract: The present disclosure relates to a dry strength agent composition, use of an amine-containing cationic polymer for enhancing the dry strength of paper, and a method for enhancing the dry strength of paper. The dry strength agent composition includes at least two components. The first component is an amine-containing cationic polymer and the second component may be one or more anionic or amphoteric polymers.Type: GrantFiled: December 30, 2016Date of Patent: July 7, 2020Assignee: ECOLAB USA INC.Inventors: Yulin Zhao, Chunhao Wang, Na Xu, Jun Li, Meng Zhang
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Patent number: 10697121Abstract: A process for flocculating filler particles in water is provided. The process comprises adding a flocculant to a mixture comprising filler particles and water, wherein the flocculant has a reduced specific viscosity (“RSV”) of from about 5 dL/g to about 16 dL/g, a viscosity average molecular weight of from about 1,200,000 to about 7,500,000, and a cationic charge of from about 5 mol % to about 50 mol %. Flocs formed by flocculation of the filler particles and the flocculant have a median particle size of from about 10 ?m to about 150 ?m. The filler is not precipitated calcium carbonate alone. The flocs provided by the process are useful in increasing ash content of a paper product.Type: GrantFiled: October 27, 2015Date of Patent: June 30, 2020Assignee: ECOLAB USA INC.Inventors: Qinglong Rao, Yulin Zhao, Weiguo Cheng, Stephen B. Ashton, Aleksandar Todorovic, Alan Smith
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Publication number: 20190301101Abstract: A method of enhancing paper strength properties is provided. The method comprises treating a paper sheet precursor with a polyaluminum salt, and a strengthening agent, wherein the strengthening agent comprises a dialdehyde-modified polyacrylamide copolymer and a polyacrylamide copolymer. The polyaluminum salt may be polyaluminum chloride. The methods have been demonstrated to provide, among other things, improvements in retention, strength, and dewatering.Type: ApplicationFiled: May 31, 2017Publication date: October 3, 2019Applicant: Ecolab USA Inc.Inventors: Meng Zhang, Yulin Zhao, Na Xu
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Patent number: 10422079Abstract: The present invention provides a method for preserving recycled fiber by using biocides and a method for manufacturing paper using recycled fiber. The method for manufacturing paper, using recycled fiber as a raw material, comprises pulping procedure: pulping the raw material containing recycled fiber, and papermaking procedure: producing the paper with the pulp slurry obtained in the pulping procedure; wherein the total starch content of recycled fiber is measured before recycled fiber is pulped, and when the total starch content of recycled fiber is higher than a predetermined value, one or more biocides are added during the pulping procedure.Type: GrantFiled: February 5, 2015Date of Patent: September 24, 2019Assignee: ECOLAB USA INC.Inventors: Wenli Tu, Yumei Lu, Zhi Chen, Yulin Zhao
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Patent number: 10316469Abstract: An on-line control and reaction process for pH adjustment and a control device for automatically adjusting pH value are provided. The process includes mixing a first enhancer and a second enhancer, optionally after diluting the first enhancer and/or the second enhancer with water, to form a mixture, setting a base pH value (?1) and a target pH value (?2), and adding pH adjuster into the mixture via a pH control unit and mixing to obtain a product with the target pH value. The pH control unit adjusts the adding of the pH adjuster by measuring or inputting certain parameters.Type: GrantFiled: December 9, 2015Date of Patent: June 11, 2019Assignee: Ecolab USA Inc.Inventors: Meng Zhang, Na Xu, Jun Li, Yulin Zhao
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Publication number: 20190055695Abstract: The present invention relates to a release aid that includes at least one succinic anhydride derivative for use in a papermaking process. For example, the release aid of the present invention is particularly useful for use in a paperweb creping process. The present invention also relates to a paperweb creping method that includes a release aid comprising at least one succinic anhydride.Type: ApplicationFiled: November 29, 2016Publication date: February 21, 2019Applicant: Ecolab USA Inc.Inventors: Jia Wu, Yulin Zhao, Xiao Zhang
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Patent number: 10145067Abstract: Methods of improving dewatering efficiency, increasing sheet wet web strength, increasing sheet wet strength, and enhancing filler retention in a papermaking process are disclosed. The methods improve the efficiency of drainage aids, wet web strength aids, and/or wet strength aids by coating at least some of the filler particles with a material that prevents the filler materials form adhering to a those additives.Type: GrantFiled: September 21, 2016Date of Patent: December 4, 2018Assignee: ECOLAB USA INC.Inventors: Yulin Zhao, Jun Li, Qing Long Rao, Stephen Ashton, Weiguo Cheng, Aleksandar Todorovic, Alan Smith
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Publication number: 20180320316Abstract: The present disclosure relates to a dry strength agent composition, use of an amine-containing cationic polymer for enhancing the dry strength of paper, and a method for enhancing the dry strength of paper. The dry strength agent composition includes at least two components. The first component is an amine-containing cationic polymer and the second component may be one or more anionic or amphoteric polymers.Type: ApplicationFiled: December 30, 2016Publication date: November 8, 2018Applicant: ECOLAB USA INC.Inventors: Yulin ZHAO, Chunhao WANG, Na XU, Jun LI, Meng ZHANG
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Publication number: 20180298556Abstract: A paper-making aid composition, as well as processes for increasing tensile strength in paper and paper-making processes are provided. The paper-making composition comprises an anionic dialdehyde-modified polyacrylamide and a polyamide polyamine-epichlorohydrin (“PAE”) resin present in the paper-making aid composition at a weight ratio of PAE resin to anionic dialdehyde-modified polyacrylamide of from about 5:1 to about 1:1.6. The processes utilize an anionic dialdehyde-modified polyacrylamide and PAE resin at certain ratios. The anionic dialdehyde-modified polyacrylamide and PAE resin may be added to the pulp slurry as a composition or separately.Type: ApplicationFiled: November 23, 2015Publication date: October 18, 2018Applicant: Ecolab USA Inc.Inventors: Na Xu, Meng Zhang, Yulin Zhao
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Patent number: 10005007Abstract: Disclosed are an oil-in-water emulsion defoamer and a method for preparing the defoamer. The defoamer may have a dispersed oil phase with a droplet size of 4 to 8 ?m, and a viscosity of 100 to 1000 cP, and is widely used for defoaming in paper coating and wet-end in a paper mill. A method for preparing an oil-in-water emulsion defoamer is also provided. The method may include adding an emulsifying agent to biodiesel, and mixing, then gradually adding hydrophobic fumed silica to obtain a first mixture. The method may also include gradually adding water and a non-ionic surfactant, and stirring until uniform to obtain a second mixture. The method may also include gradually adding the first mixture to the second mixture, and stirring until uniform, to obtain an oil-in-water emulsion defoamer.Type: GrantFiled: April 23, 2014Date of Patent: June 26, 2018Assignee: ECOLAB USA INC.Inventors: Yanru Fan, Yulin Zhao
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Patent number: 9873986Abstract: A paper-making aid composition comprising dialdehyde-modified polyacrylamide-type strengthening agent, polyacrylamide-type strengthening agent and water and having a pH value of 6 or more is provided. A method of paper-making by using the paper-making aid composition is also provided.Type: GrantFiled: September 12, 2014Date of Patent: January 23, 2018Assignee: Ecolab USA Inc.Inventors: Bo Zhu, Na Xu, Meng Zhang, Yulin Zhao
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Patent number: 9873983Abstract: The invention provides a process for paper-making comprising adding to pulp slurry at least a first aqueous liquid and a second aqueous liquid so as to obtain a paper stock; forming the paper stock so as to obtain a wet paper web; pressing and draining the wet paper web so as to obtain a wet paper sheet; and drying the wet paper sheet so as to obtain a paper sheet. Correspondingly, the invention provides an aid composition for paper-making.Type: GrantFiled: September 12, 2014Date of Patent: January 23, 2018Assignee: Ecolab USA Inc.Inventors: Bo Zhu, Meng Zhang, Jun Li, Na Xu, Yulin Zhao
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Publication number: 20170342663Abstract: An on-line control and reaction process for pH adjustment and a control device for automatically adjusting pH value are provided. The process includes mixing a first enhancer and a second enhancer, optionally after diluting the first enhancer and/or the second enhancer with water, to form a mixture, setting a base pH value (?1) and a target pH value (?2), and adding pH adjuster into the mixture via a pH control unit and mixing to obtain a product with the target pH value. The pH control unit adjusts the adding of the pH adjuster by measuring or inputting certain parameters.Type: ApplicationFiled: December 9, 2015Publication date: November 30, 2017Applicant: Ecolab USA Inc.Inventors: Meng Zhang, Na Xu, Jun Li, Yulin Zhao
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Publication number: 20170328004Abstract: A process for flocculating filler particles in water is provided. The process comprises adding a flocculant to a mixture comprising filler particles and water, wherein the flocculant has a reduced specific viscosity (“RSV”) of from about 5 dL/g to about 16 dL/g, a viscosity average molecular weight of from about 1,200,000 to about 7,500,000, and a cationic charge of from about 5 mol % to about 50 mol %. Flocs formed by flocculation of the filler particles and the flocculant have a median particle size of from about 10 um to about 150 um. The filler is not precipitated calcium carbonate alone. The flocs provided by the process are useful in increasing ash content of a paper product.Type: ApplicationFiled: October 27, 2015Publication date: November 16, 2017Applicant: Ecolab USA Inc.Inventors: Qinglong Rao, Yulin Zhao, Weiguo Cheng, Stephen B. Ashton, Aleksandar Todorovic, Alan Smith
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Publication number: 20170295816Abstract: The present invention discloses a 3D food printer, which comprises a large hopper in a print head with a cooling system, so as to store and supply a large amount of a food material and print reliably at a high ambient temperature, and an automatic conveying system for printed products, so as to automatically output the food product after printing it, and then proceed with the next one. These features make the printer more effective, easier to operate, and in line with the requirements of food hygiene.Type: ApplicationFiled: August 1, 2016Publication date: October 19, 2017Applicant: SHANGHAI FOCHIF ELECTROMECHANICAL TECHNOLOGY CO., LTD.Inventors: Yungan Wang, Tong Chen, Xuan Wang, Wengao Hu, Yulin Zhao, Hao Yin
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Publication number: 20170175333Abstract: The present invention provides a method for preserving recycled fiber by using biocides and a method for manufacturing paper using recycled fiber. The method for manufacturing paper, using recycled fiber as a raw material, comprises pulping procedure: pulping the raw material containing recycled fiber, and papermaking procedure: producing the paper with the pulp slurry obtained in the pulping procedure; wherein the total starch content of recycled fiber is measured before recycled fiber is pulped, and when the total starch content of recycled fiber is higher than a predetermined value, one or more biocides are added during the pulping procedure.Type: ApplicationFiled: February 5, 2015Publication date: June 22, 2017Applicant: ECOLAB USA INC.Inventors: Wenli TU, Yumei LU, Zhi CHEN, Yulin ZHAO