Patents by Inventor Yi Wan
Yi Wan 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: 20260273625Abstract: A method of laser-electron beam composite additive manufacturing, may include: melting metal powder by using an electron beam as heat source to form molten pool on substrate surface; acquiring average temperature, surface fluctuations, and defect occurrence rate of the molten pool in real time; when simultaneously the average temperature reaches set stable temperature range, the surface fluctuations decrease to set standard range, and the defect occurrence rate is lower than a set threshold, switching to using a laser as main heat source and the electron beam as auxiliary heat source; and, continuing to melt metal powder until a deposition is formed; during collaborative operation process of laser and electron beam, constructing energy distribution map based on multiple detection data to obtain temperature and morphology distributions of molten pool; and, adjusting power parameters of laser and electron beam in real time based on variations in temperature and morphology of molten pool.Type: ApplicationFiled: March 10, 2026Publication date: September 17, 2026Inventors: Jilai WANG, Baojian LIU, Qingjun ZHOU, Ning GUO, Quhao LI, Yi WAN
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Publication number: 20260201549Abstract: A vapor deposition system is described. The vapor deposition system includes a reaction chamber and a reactant delivery subsystem coupled with the reaction chamber. The reaction chamber is configured to retain a substrate therein. The reactant delivery subsystem includes a inlets, a pre-reaction region, and outlets. The inlets receive precursors and chalcogen precursor(s). The pre-reaction region is configured to receive the precursors from a portion of the inlets and to react at least a portion of the precursors to form modified precursor(s). The modified precursor(s) are more thermally stable than metal-containing precursor(s) of the precursors used to form the modified precursor(s). The outlets are coupled with the reaction chamber and the pre-reaction region. The outlets separately provide the modified precursor(s) and the chalcogen precursor(s) to the reaction chamber. The modified precursor(s) and the chalcogen precursor(s) react and form a chalcogen film on the substrate in the reaction chamber.Type: ApplicationFiled: March 13, 2026Publication date: July 16, 2026Inventors: Lain-Jong Li, Yi Wan, Yu-Ming Chang
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Patent number: 12618146Abstract: A vapor deposition system is described. The vapor deposition system includes a reaction chamber and a reactant delivery subsystem coupled with the reaction chamber. The reaction chamber is configured to retain a substrate therein. The reactant delivery subsystem includes inlets, a pre-reaction region, and outlets. The inlets receive precursors and chalcogen precursor(s). The pre-reaction region is configured to receive the precursors from a portion of the inlets and to react at least a portion of the precursors to form modified precursor(s). The modified precursor(s) are more thermally stable than metal-containing precursor(s) of the precursors used to form the modified precursor(s). The outlets are coupled with the reaction chamber and the pre-reaction region. The outlets separately provide the modified precursor(s) and the chalcogen precursor(s) to the reaction chamber. The modified precursor(s) and the chalcogen precursor(s) react and form a chalcogen film on the substrate in the reaction chamber.Type: GrantFiled: September 3, 2024Date of Patent: May 5, 2026Assignee: The University of Hong KongInventors: Lain-Jong Li, Yi Wan, Yu-Ming Chang
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Patent number: 12548287Abstract: The present invention provides a method and system for multi-modal remote sensing image hybrid matching with multi-dimensional oriented self-similarity features. The method comprises: hybrid feature coarse matching is executed by rapidly extracting the image's self-similarity features using the offset mean filtering method and describing the feature points using the directional information of the self-similarity features. Through this coarse matching, an affine transformation model between multi-modal images is estimated, and an initial affine transformation is applied to the matched image. Next, the multi-dimensional oriented self-similarity feature fine matching is performed by constructing multi-dimensional oriented self-similarity template features using the multi-channel self-similarity map obtained from the hybrid feature coarse matching stage.Type: GrantFiled: January 8, 2024Date of Patent: February 10, 2026Assignee: WUHAN UNIVERSITYInventors: Yongjun Zhang, Yongxiang Yao, Wenfei Zhang, Yi Wan, Mingtao Xiong
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Publication number: 20250092511Abstract: A vapor deposition system is described. The vapor deposition system includes a reaction chamber and a reactant delivery subsystem coupled with the reaction chamber. The reaction chamber is configured to retain a substrate therein. The reactant delivery subsystem includes inlets, a pre-reaction region, and outlets. The inlets receive precursors and chalcogen precursor(s). The pre-reaction region is configured to receive the precursors from a portion of the inlets and to react at least a portion of the precursors to form modified precursor(s). The modified precursor(s) are more thermally stable than metal-containing precursor(s) of the precursors used to form the modified precursor(s). The outlets are coupled with the reaction chamber and the pre-reaction region. The outlets separately provide the modified precursor(s) and the chalcogen precursor(s) to the reaction chamber. The modified precursor(s) and the chalcogen precursor(s) react and form a chalcogen film on the substrate in the reaction chamber.Type: ApplicationFiled: September 3, 2024Publication date: March 20, 2025Inventors: Lain-Jong Li, Yi Wan, Yu-Ming Chang
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Publication number: 20250078444Abstract: The present invention provides a method and system for multi-modal remote sensing image hybrid matching with multi-dimensional oriented self-similarity features. The method comprises: hybrid feature coarse matching is executed by rapidly extracting the image's self-similarity features using the offset mean filtering method and describing the feature points using the directional information of the self-similarity features. Through this coarse matching, an affine transformation model between multi-modal images is estimated, and an initial affine transformation is applied to the matched image. Next, the multi-dimensional oriented self-similarity feature fine matching is performed by constructing multi-dimensional oriented self-similarity template features using the multi-channel self-similarity map obtained from the hybrid feature coarse matching stage.Type: ApplicationFiled: January 8, 2024Publication date: March 6, 2025Applicant: WUHAN UNIVERSITYInventors: Yongjun ZHANG, Yongxiang YAO, Wenfei ZHANG, Yi WAN, Mingtao XIONG
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Patent number: 12103109Abstract: A nanosecond laser ablation and chemical thermal decomposition for preparing a super-hydrophobic micro-nano structure on stainless steel. The method solves the defects of long preparation cycle and complex process flow of a super-hydrophobic surface of stainless steel, and does not use fluorine-containing chemical reagents for modification.Type: GrantFiled: December 28, 2019Date of Patent: October 1, 2024Assignee: SHANDONG UNIVERSITYInventors: Yukui Cai, Zhanqiang Liu, Xichun Luo, Yi Wan, Qinghua Song, Bing Wang, Yiping Tang
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Patent number: 11952307Abstract: A method for preparing a microstructure on the surface of glass by titanium oxide nanoparticle-assisted infrared nanosecond laser, including the following steps: (1) dropwise applying a titanium oxide nanoparticle hydrogel onto the surface of a glass sample; (2) pressing another piece of glass on the surface of the hydrogel, so the hydrogel is evenly distributed between the two pieces of glass, and allowing the two pieces of glass to stand horizontally for a period of time to air-dry the hydrogel; (3) separating the two pieces of glass to obtain a glass with a uniform titanium oxide nanoparticle coating; (4) forming a microstructure using an infrared nanosecond laser with a wavelength of 1064 nm; and (5) performing after-treatment, including ultrasonically cleaning the sample with acetone, absolute ethanol and deionized water respectively for 10 min to remove titanium oxide nanoparticles attached to the surface, to obtain a glass sample with the microstructure.Type: GrantFiled: December 28, 2019Date of Patent: April 9, 2024Assignee: SHANDONG UNIVERSITYInventors: Yukui Cai, Zhanqiang Liu, Xichun Luo, Yiping Tang, Yi Wan, Qinghua Song, Bing Wang
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Publication number: 20230279334Abstract: The present invention provides a method for the preparation of quality control pellets freeze-dried of Escherichia coli, including steps such as making puree containing Escherichia coli, making freeze-drying protective agent, mixing freeze-drying protective agent with bacterial puree and freeze-drying to make freeze-dried powder, and finally making quality control pellets with high activity.Type: ApplicationFiled: September 2, 2021Publication date: September 7, 2023Inventors: Wenxing LI, Yi WAN
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Publication number: 20230001717Abstract: Techniques for determination of size of printable medium are described. In an example, a printing device includes an adjuster that is movable based on a size of a printable medium to be fed to the printing device. A first element is coupled to the adjuster and moves with the adjuster to indicate a position of the adjuster. A second element is movable relative to the adjuster. A position signal indicative of a distance between the second element and the first element is generated. The position signal can be used to determine the size of the printable medium.Type: ApplicationFiled: October 28, 2019Publication date: January 5, 2023Inventors: AiQiang Yang, Inn Chyun Goh, Yi Wan, Choon Siang Peck, Kok Chai Chong
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Publication number: 20210370443Abstract: A nanosecond laser ablation and chemical thermal decomposition for preparing a super-hydrophobic micro-nano structure on stainless steel. The method solves the defects of long preparation cycle and complex process flow of a super-hydrophobic surface of stainless steel, and does not use fluorine-containing chemical reagents for modification.Type: ApplicationFiled: December 28, 2019Publication date: December 2, 2021Applicant: SHANDONG UNIVERSITYInventors: Yukui CAI, Zhanqiang LIU, Xichun LUO, Yi WAN, Qinghua SONG, Bing WANG, Yiping TANG
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Publication number: 20210371329Abstract: A method for preparing a microstructure on the surface of glass by titanium oxide nanoparticle-assisted infrared nanosecond laser, including the following steps: (1) dropwise applying a titanium oxide nanoparticle hydrogel onto the surface of a glass sample; (2) pressing another piece of glass on the surface of the hydrogel, so the hydrogel is evenly distributed between the two pieces of glass, and allowing the two pieces of glass to stand horizontally for a period of time to air-dry the hydrogel; (3) separating the two pieces of glass to obtain a glass with a uniform titanium oxide nanoparticle coating; (4) forming a microstructure using an infrared nanosecond laser with a wavelength of 1064 nm; and (5) performing after-treatment, including ultrasonically cleaning the sample with acetone, absolute ethanol and deionized water respectively for 10 min to remove titanium oxide nanoparticles attached to the surface, to obtain a glass sample with the microstructure.Type: ApplicationFiled: December 28, 2019Publication date: December 2, 2021Applicant: SHANDONG UNIVERSITYInventors: Yukui CAI, Zhanqiang LIU, Xichun LUO, Yiping TANG, Yi WAN, Qinghua SONG, Bing WANG
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Patent number: 11085936Abstract: A method and kit the simultaneous analysis of thyroid hormones (THs) and related metabolites in serum are disclosed. The method includes the extraction of THs and related metabolites, the derivatization of THs and related metabolites with 5-N-succinimidoxy-5-oxopentyl)triphenylphosphonium bromide (SPTPP), and the analysis of SPTPP derivatives using ultra-high-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). Free or total THs (T3 and T4) together with their related metabolites (MIT, DIT, T0, T1, rT1, 3,3?-T2, 3,5-T2, and rT3) can be determined simultaneously, rapidly, and accurately. This invention overcomes the limitation that the traditional method can only be used for the analysis of T3 and T4 with low specificity. The invention exhibits extremely high analytical sensitivity for all of the target analytes (femtogram level).Type: GrantFiled: April 9, 2019Date of Patent: August 10, 2021Assignee: Peking UniversityInventors: Yi Wan, Hongyang Cui, Hang Liu, Shixiong Gao
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Patent number: 11058716Abstract: Provided are a method, target and application for NO accumulation to decrease invasiveness of Pseudomonas aeruginosa; achieving NO accumulation by means of external NO donors or disruption of internal NO metabolism in an environment where Pseudomonas aeruginosa is growing or being cultured, in order to decrease production by Pseudomonas aeruginosa of the invasion factor pyocyanin. Utilizing even micro-quantities of NO can significantly inhibit Pseudomonas aeruginosa PCN (PCN synthesis down 82% with 60 ?M SNP treatment); by inhibiting NO reductase, an enzyme related to NO metabolism, PCN synthesis can be significantly inhibited (the PAO1-?nor strain has 84% PCN reduction). Using NO donors or inhibiting enzymes involved in Pseudomonas aeruginosa NO metabolism as a means of combating bacterial infectious disease does not affect the body's normal microflora like traditional antibiotics.Type: GrantFiled: January 9, 2020Date of Patent: July 13, 2021Inventors: Yi Wan, Chang Chen, Lei Gao, Yuying Zhang, Xinhua Qiao, Yan Wang
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Publication number: 20210147166Abstract: A print device comprising an input tray to receive a print media stack, and a load stop arm to manage print media feed, from the input tray, into a media loading path for printing. The load stop arm is to rotate between a media stacking state and a media feed state to manage the print media feed. The load stop arm comprising a trigger protrusion to move from a default position to a trigger position when the load stop arm rotates to the media stacking state in a low stack condition. The low stack condition indicates reduction of print media in the print media stack to an amount below a threshold value.Type: ApplicationFiled: May 9, 2018Publication date: May 20, 2021Applicant: Hewlett-Packard Development Company, L.P.Inventors: Kok Chai Chong, Yi Wan, Seng San Koh
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Publication number: 20200326352Abstract: A method and kit the simultaneous analysis of thyroid hormones (THs) and related metabolites in serum are disclosed. The method includes the extraction of THs and related metabolites, the derivatization of THs and related metabolites with 5-N-succinimidoxy-5-oxopentyl)triphenylphosphonium bromide (SPTPP), and the analysis of SPTPP derivatives using ultra-high-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). Free or total THs (T3 and T4) together with their related metabolites (MIT, DIT, T0, T1, rT1, 3,3?-T2, 3,5-T2, and rT3) can be determined simultaneously, rapidly, and accurately. This invention overcomes the limitation that the traditional method can only be used for the analysis of T3 and T4 with low specificity. The invention exhibits extremely high analytical sensitivity for all of the target analytes (femtogram level).Type: ApplicationFiled: April 9, 2019Publication date: October 15, 2020Inventors: Yi Wan, Hongyang Cui, Hang Liu, Shixiong Gao
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Publication number: 20200147129Abstract: Provided are a method, target and application for NO accumulation to decrease invasiveness of Pseudomonas aeruginosa; achieving NO accumulation by means of external NO donors or disruption of internal NO metabolism in an environment where Pseudomonas aeruginosa is growing or being cultured, in order to decrease production by Pseudomonas aeruginosa of the invasion factor pyocyanin. Utilizing even micro-quantities of NO can significantly inhibit Pseudomonas aeruginosa PCN (PCN synthesis down 82% with 60 ?M SNP treatment); by inhibiting NO reductase, an enzyme related to NO metabolism, PCN synthesis can be significantly inhibited (the PAO1-?nor strain has 84% PCN reduction). Using NO donors or inhibiting enzymes involved in Pseudomonas aeruginosa NO metabolism as a means of combating bacterial infectious disease does not affect the body's normal microflora like traditional antibiotics.Type: ApplicationFiled: January 9, 2020Publication date: May 14, 2020Inventors: Yi WAN, Chang CHEN, Lei GAO, Yuying ZHANG, Xinhua QIAO, Yan WANG
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Patent number: 10576465Abstract: The present invention relates to a catalyst for producing chlorine by oxidation of hydrogen chloride and a method for preparing the same. The catalyst comprises a support and active ingredients that comprise 1-20 wt % of copper, 0.01-5 wt % of boron, 0.1-10 wt % of alkali metal element(s), 0.1-15 wt % of one or more rare earth elements, and 0-10 wt % of one or more elements selected from magnesium, calcium, barium, manganese, iron, nickel, cobalt, zinc, ruthenium or titanium based on the total weight of the catalyst. The catalyst is prepared by a two-step impregnation method. Comparing with the available catalysts of the same type, the catalyst according to the present invention has greatly improved conversion and stability.Type: GrantFiled: June 13, 2017Date of Patent: March 3, 2020Assignee: Wanhua Chemical Group Co., Ltd.Inventors: Guangquan Yi, Yinchuan Lou, Yi Wan, Xunkun Wu, Weiqi Hua, Jiansheng Ding
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Patent number: 10537593Abstract: Provided are a method, target and application for NO accumulation to decrease invasiveness of Pseudomonas aeruginosa; achieving NO accumulation by means of external NO donors or disruption of internal NO metabolism in an environment where Pseudomonas aeruginosa is growing or being cultured, in order to decrease production by Pseudomonas aeruginosa of the invasion factor pyocyanin. Utilizing even micro-quantities of NO can significantly inhibit Pseudomonas aeruginosa PCN (PCN synthesis down 82% with 60 ?M SNP treatment); by inhibiting NO reductase, an enzyme related to NO metabolism, PCN synthesis can be significantly inhibited (the PAO1-?nor strain has 84% PCN reduction). Using NO donors or inhibiting enzymes involved in Pseudomonas aeruginosa NO metabolism as a means of combating bacterial infectious disease does not affect the body's normal microflora like traditional antibiotics.Type: GrantFiled: October 22, 2016Date of Patent: January 21, 2020Inventors: Yi Wan, Chang Chen, Lei Gao, Yuying Zhang, Xinhua Qiao, Yan Wang
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Publication number: 20180311275Abstract: Provided are a method, target and application for NO accumulation to decrease invasiveness of Pseudomonas aeruginosa (P. aeruginosa); achieving NO accumulation by means of external NO donors or disruption of internal NO metabolism in an environment where P. aeruginosa is growing or being cultured, in order to decrease production by P. aeruginosa of the invasion factor pyocyanin. Utilizing even micro-quantities of NO can significantly inhibit P. aeruginosa PCN (PCN synthesis down 82% with 60 ?M SNP treatment); by inhibiting NO reductase, an enzyme related to NO metabolism, PCN synthesis can be significantly inhibited (the PAO1 ?nor strain has 84% PCN reduction). Using NO donors or inhibiting enzymes involved in P. aeruginosa NO metabolism as a means of combating bacterial infectious disease does not affect the body's normal microflora like traditional antibiotics.Type: ApplicationFiled: October 22, 2016Publication date: November 1, 2018Inventors: Yi WAN, Chang CHEN, Lei GAO, Yuying ZHANG, Xinhua QIAO, Yan WANG