Patents by Inventor Zhenhua Mao
Zhenhua Mao 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: 20230298362Abstract: An approach is provided for lane width estimation from incomplete lane marking detections of a road lane. The approach, for example, involves generating one or more perpendicular lines respectively from location centers of one or more first lane marking detections. A respective lane marking detection represents at least a portion of a boundary of the road lane as a line delimited by two location data points in accordance with detections by at least one sensor device onboard at least one vehicle. The approach also involves identifying second lane marking detections that each respectively intersect one of the one or more perpendicular lines. The approach further involves selecting one or more candidate lane widths based on one or more respective distances from the location centers to the second lane marking detections. The approach further involves determining an estimated lane width of the road lane based on the one or more candidate lane widths.Type: ApplicationFiled: March 18, 2022Publication date: September 21, 2023Inventors: Zhenhua ZHANG, Qi MAO, Xiaoying JIN, Lin GAN, Sanjay Kumar BODDHU
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Publication number: 20230266142Abstract: An approach is provided for reconstructing a road linear feature. The approach, for example, involves receiving two or more linear feature detections that respectively represent a linear feature of a road as a line segment delimited by two feature points. The approach also involves map matching the two or more linear feature detections to a road link segment of a geographic database. The approach further involves determining an orientation difference for each of the two or more linear feature detections based on an angle difference between each linear feature detection and a link orientation of the map matched road link segment. The approach further involves determining a feature orientation of the linear feature based on an aggregation of the orientation difference for each linear feature detection. The approach further involves constructing a representation of the linear feature based at least in part on the feature orientation.Type: ApplicationFiled: February 23, 2022Publication date: August 24, 2023Inventors: Zhenhua ZHANG, Qi MAO, Lin GAN, Xiaoying JIN, Sanjay Kumar BODDHU
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Patent number: 11679205Abstract: A digital syringe is used with conventional polymer disposable syringe construction to be practical in the medical environment. Errors associated with the larger volumes of the syringes (which exacerbate minor errors in plunger position) and the flexibility and dimensional variations of the polymer plungers are accommodated by direct measurement of the syringe plunger position rather than indirect measurement of motor position and inference of syringe plunger position. This direct measurement eliminates mechanical tolerances (“stack up”) in the motor, gear train, and lead screw on plunger movement, an effect exacerbated by flexibility of the plunger and changes in syringe resistance and medicament viscosity, for example, with different medicaments or when the syringe is refrigerated. The digital syringe may be combined with the motor unit to provide additional versatility.Type: GrantFiled: March 10, 2020Date of Patent: June 20, 2023Assignee: Zyno Medical LLCInventors: Chao Young Lee, Zhenhua Mao, Mei Zhang, Frederick Lee
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Patent number: 11660388Abstract: A digital syringe is used with conventional polymer disposable syringe construction to be practical in the medical environment. Errors associated with the larger volumes of the syringes (which exacerbate minor errors in plunger position) and the flexibility and dimensional variations of the polymer plungers are accommodated by direct measurement of the syringe plunger position rather than indirect measurement of motor position and inference of syringe plunger position. This direct measurement eliminates mechanical tolerances (“stack up”) in the motor, gear train, and lead screw on plunger movement, an effect exacerbated by flexibility of the plunger and changes in syringe resistance and medicament viscosity, for example, with different medicaments or when the syringe is refrigerated. The digital syringe may be combined with the motor unit to provide additional versatility.Type: GrantFiled: July 12, 2019Date of Patent: May 30, 2023Assignee: Zyno Medical, LLCInventors: Chao Young Lee, Zhenhua Mao, Mei Zhang, Frederick Lee
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Publication number: 20230083092Abstract: An automatic needle insertion device assists patients who may be uncomfortable with placing the needle themselves and employs a soft outer needle inserted using a rigid stylet, for example, a standard hypodermic needle, which is then removed after the soft needle is placed, greatly reducing irritation. An ambulatory pump can be filled with a variety of drugs and different amounts of drug on demand, for example, using a syringe prior to use.Type: ApplicationFiled: August 24, 2022Publication date: March 16, 2023Inventors: Chao Young Lee, Mei Zhang, Zhenhua Mao
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Patent number: 11600812Abstract: The disclosure relates to a carbon-based electrode material that has been graphitized to hold ions in the electrode of a battery and more particularly include carbide or carbide and nitride surfaces that protect the graphite core. The preferred batteries include metal ion such as lithium ion batteries where the carbon-based electrode is the anode although the carbon-based electrode may also serve in dual ion batteries where both electrodes may comprise the graphitized carbon-based electrodes. The electrodes are more amorphous than conventional graphite electrodes and include a carbide or nitride containing surface treatment.Type: GrantFiled: July 15, 2020Date of Patent: March 7, 2023Assignee: Phillips 66 CompanyInventors: Zhenhua Mao, Nan Li, Corey W. Tropf, Dachuan Shi, Christopher J. LaFrancois
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Patent number: 11594721Abstract: The disclosure relates to a carbon-based electrode material that has been graphitized to hold ions in the electrode of a battery and more particularly include carbide or carbide and nitride surfaces that protect the graphite core. The preferred batteries include metal ion such as lithium ion batteries where the carbon-based electrode is the anode although the carbon-based electrode may also serve in dual ion batteries where both electrodes may comprise the graphitized carbon-based electrodes. The electrodes are more amorphous than conventional graphite electrodes and include a carbide or nitride containing surface treatment.Type: GrantFiled: July 15, 2020Date of Patent: February 28, 2023Assignee: Phillips 66 CompanyInventors: Zhenhua Mao, Nan Li, Corey W. Tropf, Dachuan Shi, Christopher J. LaFrancois
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Publication number: 20220200049Abstract: A method comprising reacting a M, a XOZ additive, and an electrolyte to form a liquid electrolyte interphase layer. In this method M can be selected from the group consisting of a reducing metal, a reducing metal salt, or combinations thereof. X can be selected from a group 13, 14, 15, or 16 element and Z can be selected from a group 17 element. Additionally, in this method, the ratio of the XOZ additive to the electrolyte can be greater than 0.5% by mass content.Type: ApplicationFiled: December 16, 2021Publication date: June 23, 2022Applicant: PHILLIPS 66 COMPANYInventors: Zhenhua Mao, Christopher J. LaFrancois, Mengxi Yang
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Publication number: 20220200054Abstract: A method of reacting a M and a XOZ additive to form a primary solution. This primary solution is then incorporated into an electrolyte to form a precursor liquid electrolyte interphase, wherein the ratio of the XOZ additive to the electrolyte is greater than 0.5% by mass content. In this method, M can be selected from the group consisting of a reducing metal, a reducing metal salt, or combinations thereof. X can be selected from a group 13, 14, 15, or 16 element and Z can be selected from a group 17 element.Type: ApplicationFiled: December 16, 2021Publication date: June 23, 2022Applicant: PHILLIPS 66 COMPANYInventors: Zhenhua Mao, Christopher J. LaFrancois, Mengxi Yang
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Patent number: 11355754Abstract: A process for binding sulfur to carbon to form carbon polysulfide is described that better secures sulfur to the cathode in a lithium-sulfur battery during lithium oxidation and reduction. The process includes selecting a suitable carbon precursor, blending it with sulfur and an organic solvent and mill the combination to make a fine particle size mix and then driving off the solvent along with species that have been dissolved in the solvent. The remaining carbon precursor and sulfur are heated in an inert environment at a temperature between about 300° C. and about 550° C. to chemically bind the sulfur and the carbon to form carbon polysulfide suitable for use as a cathode powder in a lithium-sulfur battery.Type: GrantFiled: January 14, 2020Date of Patent: June 7, 2022Assignee: Phillips 66 CompanyInventors: Zhenhua Mao, Bill Greg Poling, Christopher J. LaFrancois
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Publication number: 20220143313Abstract: A “clip-on” flow controller for IV lines automatically controls flow rate over a range of pressures through a self-contained valve and flow sensor. By eliminating a pump, a lightweight system with a long operating life can be produced, as well as a system that can be self-supported on the IV line yet still provide institutional-level flow accuracy without accurate elevation of the IV bag or careful monitoring.Type: ApplicationFiled: November 5, 2021Publication date: May 12, 2022Inventors: Chao Young Lee, Zhenhua Mao, Mei Zhang
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Publication number: 20210361855Abstract: A low-cost medical pump for ambulatory use provides an improved IV line cartridge attachment allowing for single handed, low force release while preventing inadvertent IV line cartridge release. A rotatable side lever minimizes the force required to move the locking elements against a spring biased force urging the locking elements to a locking position.Type: ApplicationFiled: May 20, 2020Publication date: November 25, 2021Inventors: Chaoyoung Lee, Zhenhua Mao, Frederick Lee, Mei Zhang
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Publication number: 20210218027Abstract: A process for binding sulfur to carbon to form carbon polysulfide is described that better secures sulfur to the cathode in a lithium-sulfur battery during lithium oxidation and reduction. The process includes selecting a suitable carbon precursor, blending it with sulfur and an organic solvent and mill the combination to make a fine particle size mix and then driving off the solvent along with species that have been dissolved in the solvent. The remaining carbon precursor and sulfur are heated in an inert environment at a temperature between about 300° C. and about 550° C. to chemically bind the sulfur and the carbon to form carbon polysulfide suitable for use as a cathode powder in a lithium-sulfur battery.Type: ApplicationFiled: January 14, 2020Publication date: July 15, 2021Applicant: PHILLIPS 66 COMPANYInventors: Zhenhua Mao, Bill Greg Poling, Christopher J. LaFrancois
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Publication number: 20210020904Abstract: The disclosure relates to a carbon-based electrode material that has been graphitized to hold ions in the electrode of a battery and more particularly include carbide or carbide and nitride surfaces that protect the graphite core. The preferred batteries include metal ion such as lithium ion batteries where the carbon-based electrode is the anode although the carbon-based electrode may also serve in dual ion batteries where both electrodes may comprise the graphitized carbon-based electrodes. The electrodes are more amorphous than conventional graphite electrodes and include a carbide or nitride containing surface treatment.Type: ApplicationFiled: July 15, 2020Publication date: January 21, 2021Applicant: PHILLIPS 66 COMPANYInventors: Zhenhua Mao, Nan Li, Corey W. Tropf, Dachuan Shi, Christopher J. LaFrancois
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Publication number: 20210020903Abstract: The disclosure relates to a carbon-based electrode material that has been graphitized to hold ions in the electrode of a battery and more particularly include carbide or carbide and nitride surfaces that protect the graphite core. The preferred batteries include metal ion such as lithium ion batteries where the carbon-based electrode is the anode although the carbon-based electrode may also serve in dual ion batteries where both electrodes may comprise the graphitized carbon-based electrodes. The electrodes are more amorphous than conventional graphite electrodes and include a carbide or nitride containing surface treatment.Type: ApplicationFiled: July 15, 2020Publication date: January 21, 2021Applicant: PHILLIPS 66 COMPANYInventors: Zhenhua Mao, Nan Li, Corey W. Tropf, Dachuan Shi, Christopher J. LaFrancois
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Publication number: 20210020939Abstract: The invention relates to carbon-based electrode material that has been graphitized to hold ions in the electrode of a battery. Preferred batteries include metal ion such as lithium ion batteries where the electrode is the anode. The electrodes are more amorphous then conventional graphite electrodes but are lower cost than coated graphite.Type: ApplicationFiled: July 15, 2020Publication date: January 21, 2021Applicant: PHILLIPS 66 COMPANYInventors: Zhenhua Mao, Christopher J. LaFrancois
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Publication number: 20210020915Abstract: The disclosure relates to a carbon-based electrode material that has been graphitized to hold ions in the electrode of a battery and more particularly include carbide or carbide and nitride surfaces that protect the graphite core. The preferred batteries include metal ion such as lithium ion batteries where the carbon-based electrode is the anode although the carbon-based electrode may also serve in dual ion batteries where both electrodes may comprise the graphitized carbon-based electrodes. The electrodes are more amorphous than conventional graphite electrodes and include a carbide or nitride containing surface treatment.Type: ApplicationFiled: July 15, 2020Publication date: January 21, 2021Applicant: PHILLIPS 66 COMPANYInventors: Zhenhua Mao, Nan Li, Corey W. Tropf, Dachuan Shi, Christopher J. LaFrancois
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Publication number: 20200238018Abstract: A digital syringe is used with conventional polymer disposable syringe construction to be practical in the medical environment. Errors associated with the larger volumes of the syringes (which exacerbate minor errors in plunger position) and the flexibility and dimensional variations of the polymer plungers are accommodated by direct measurement of the syringe plunger position rather than indirect measurement of motor position and inference of syringe plunger position. This direct measurement eliminates mechanical tolerances (“stack up”) in the motor, gear train, and lead screw on plunger movement, an effect exacerbated by flexibility of the plunger and changes in syringe resistance and medicament viscosity, for example, with different medicaments or when the syringe is refrigerated. The digital syringe may be combined with the motor unit to provide additional versatility.Type: ApplicationFiled: March 10, 2020Publication date: July 30, 2020Inventors: Chao Young Lee, Zhenhua Mao, Mei Zhang, Frederick Lee
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Publication number: 20200172402Abstract: Carbon particles are coated with a water-soluble carbon residue material by oxidizing the carbon residue in water and forming a solid coating on the particles. The coated particles may be heated to graphite forming temperatures to prepare the coated particles for use an anode powder for a battery.Type: ApplicationFiled: December 4, 2018Publication date: June 4, 2020Applicant: PHILLIPS 66 COMPANYInventor: Zhenhua Mao
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Publication number: 20200016331Abstract: A digital syringe is used with conventional polymer disposable syringe construction to be practical in the medical environment. Errors associated with the larger volumes of the syringes (which exacerbate minor errors in plunger position) and the flexibility and dimensional variations of the polymer plungers are accommodated by direct measurement of the syringe plunger position rather than indirect measurement of motor position and inference of syringe plunger position. This direct measurement eliminates mechanical tolerances (“stack up”) in the motor, gear train, and lead screw on plunger movement, an effect exacerbated by flexibility of the plunger and changes in syringe resistance and medicament viscosity, for example, with different medicaments or when the syringe is refrigerated. The digital syringe may be combined with the motor unit to provide additional versatility.Type: ApplicationFiled: July 12, 2019Publication date: January 16, 2020Inventors: Chao Young Lee, Zhenhua Mao, Mei Zhang, Frederick Lee