Patents by Inventor Daniel Zhou
Daniel Zhou 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).
-
Publication number: 20250032331Abstract: A propulsion system for a manual wheelchair includes a mounting clamp and a propulsion drive unit having a drive wheel assembly and a support suspension. The support suspension is configured to provide linear movement of the drive wheel and drive hub assembly relative to the manual wheelchair. The support suspension includes a linear bearing and slide member assembly having at least one linear bearing and a slide member for accommodating the linear movement of the drive wheel assembly and further includes a resilient suspension member that provides a tractive effort force to the drive wheel. The drive wheel assembly is supported on a carriage that is attached to one of the at least one linear bearing or the slide member and a mounting block is attached to the other. The mounting block has a clamp interface with a locating tab that engages a corresponding mounting slot in the mounting clamp.Type: ApplicationFiled: October 10, 2024Publication date: January 30, 2025Applicant: Sunrise Medical (US) LLCInventors: Samuel Traxinger, Mark Greig, Jefferey Bashian, Daniel Zhou
-
Publication number: 20240384158Abstract: Disclosed are foam precursor compositions, foamed compositions, and methods of using these foamed compositions for the stimulation of unconventional reservoirs.Type: ApplicationFiled: February 19, 2024Publication date: November 21, 2024Inventors: Varadarajan DWARAKANATH, Taimur MALIK, Lin ZUO, Jimin Daniel ZHOU, Nabijan NIZAMIDIN, Gregory A. WINSLOW, Reza BANKI, Mohamad SALMAN
-
Patent number: 12115110Abstract: A propulsion system for a manual wheelchair includes a mounting clamp and a propulsion drive unit having a drive wheel assembly and a support suspension. The support suspension is configured to provide linear movement of the drive wheel and drive hub assembly relative to the manual wheelchair. The support suspension includes a linear bearing and slide member assembly having at least one linear bearing and a slide member for accommodating the linear movement of the drive wheel assembly and further includes a resilient suspension member that provides a tractive effort force to the drive wheel. The drive wheel assembly is supported on a carriage that is attached to one of the at least one linear bearing or the slide member and a mounting block is attached to the other. The mounting block has a clamp interface with a locating tab that engages a corresponding mounting slot in the mounting clamp.Type: GrantFiled: December 23, 2019Date of Patent: October 15, 2024Assignee: Sunrise Medical (US) LLCInventors: Samuel Traxinger, Mark Greig, Jefferey Bashian, Daniel Zhou
-
Publication number: 20240267465Abstract: The present disclosure relates to systems, non-transitory computer-readable media, and methods for determining an existence of a perception gap for an interaction event. In particular, in one or more embodiments, the disclosed systems generate a suggested action and provide the suggested action for display via a graphical user interface of an agent device. In some embodiments, the disclosed systems utilize a machine learning model to generate the suggested action for the agent. Furthermore, in one or more embodiments, the disclosed systems generate an agent performance score reflecting an overall performance of an agent. In some embodiments, the disclosed systems utilize a machine learning model to generate the agent performance score.Type: ApplicationFiled: February 2, 2023Publication date: August 8, 2024Inventors: Matthew Primmer, Monique Piras, Manisha Powar, Varun Nandimandalam, Yuchen Daniel Zhou, Srivathsan Varadarajan, Ambarish Sridharanarayanan, Anderson Quach, Léonie Brown
-
Patent number: 11905461Abstract: Disclosed are foam precursor compositions, foamed compositions, and methods of using these foamed compositions for the stimulation of unconventional reservoirs.Type: GrantFiled: July 7, 2020Date of Patent: February 20, 2024Assignee: CHEVRON U.S.A. INC.Inventors: Varadarajan Dwarakanath, Taimur Malik, Lin Zuo, Jimin Daniel Zhou, Nabijan Nizamidin, Gregory A. Winslow, Reza Banki, Mohamad Salman
-
Patent number: 11739258Abstract: Proppant particulates are commonly used in hydraulic fracturing operations to maintain one or more fractures in an opened state following the release of hydraulic pressure. In complex fracture networks, it can be difficult to deposit proppant particulates fully within the fractures. In addition, low crush strengths may result in problematic fines formation. Polyaromatic hydrocarbons, commonly encountered in various refinery process streams, may serve as an advantageous precursor to proppant particulates. Polyaromatic hydrocarbons may undergo crosslinking under acid-catalyzed conditions in an aqueous solvent in the presence of a surfactant to form substantially spherical particulates that may serve as effective proppant particulates during fracturing operations. In situ formation of the proppant particulates may take place in some cases.Type: GrantFiled: December 27, 2022Date of Patent: August 29, 2023Assignee: ExxonMobil Technology and Engineering CompanyInventors: Peter A. Gordon, Huaxing Daniel Zhou
-
Publication number: 20230137975Abstract: According to various embodiments, a power converter circuit is disclosed. The power converter circuit includes at least two vertically stacked printed circuit boards (PCBs) comprising a top PCB and a bottom PCB. The power converter circuit further includes at least one multiphase coupled inductor placed between the top PCB and the bottom PCB. The top PCB is coupled to the bottom PCB via at least one conductive winding of the multiphase coupled inductor. The power converter circuit further includes at least one circuit module placed above the top PCB and at least one power source placed below the bottom PCB. The multiphase coupled inductor is configured to deliver current vertically from the bottom PCB to the top PCB.Type: ApplicationFiled: April 14, 2021Publication date: May 4, 2023Applicants: The Trustees of Princeton University, The Trustees of Dartmouth CollegeInventors: Minjie CHEN, Charles SULLIVAN, Youssef E. ELASSER, Daniel ZHOU, Jaeil BAEK, Yenan CHEN
-
Publication number: 20230132325Abstract: Proppant particulates are commonly used in hydraulic fracturing operations to maintain one or more fractures in an opened state following the release of hydraulic pressure. In complex fracture networks, it can be difficult to deposit proppant particulates fully within the fractures. In addition, low crush strengths may result in problematic fines formation. Polyaromatic hydrocarbons, commonly encountered in various refinery process streams, may serve as an advantageous precursor to proppant particulates. Polyaromatic hydrocarbons may undergo crosslinking under acid-catalyzed conditions in an aqueous solvent in the presence of a surfactant to form substantially spherical particulates that may serve as effective proppant particulates during fracturing operations. In situ formation of the proppant particulates may take place in some cases.Type: ApplicationFiled: December 27, 2022Publication date: April 27, 2023Applicant: ExxonMobil Technology and Engineering CompanyInventors: Peter A. GORDON, Huaxing Daniel ZHOU
-
Patent number: 11566170Abstract: Proppant particulates are commonly used in hydraulic fracturing operations to maintain one or more fractures in an opened state following the release of hydraulic pressure. In complex fracture networks, it can be difficult to deposit proppant particulates fully within the fractures. In addition, low crush strengths may result in problematic fines formation. Polyaromatic hydrocarbons, commonly encountered in various refinery process streams, may serve as an advantageous precursor to proppant particulates. Polyaromatic hydrocarbons may undergo crosslinking under acid-catalyzed conditions in an aqueous solvent in the presence of a surfactant to form substantially spherical particulates that may serve as effective proppant particulates during fracturing operations. In situ formation of the proppant particulates may take place in some cases.Type: GrantFiled: November 13, 2019Date of Patent: January 31, 2023Assignee: ExxonMobil Technology and Engineering CompanyInventors: Peter A. Gordon, Huaxing Daniel Zhou
-
Publication number: 20220315285Abstract: Provided is a container for supporting a cylinder-shaped cleaning wipe container. The container includes an opened first end and a closed second end, and a lid at the first end. The container also includes a two-tiered shelf disposed in a cavity of the container at the second end, the two-tiered shelf configured to support cleaning wipe containers of two different diameters.Type: ApplicationFiled: March 30, 2021Publication date: October 6, 2022Inventors: Bridget Hunt, Daniel Zhou
-
Publication number: 20220062076Abstract: A propulsion system for a manual wheelchair includes a mounting clamp and a propulsion drive unit having a drive wheel assembly and a support suspension. The support suspension is configured to provide linear movement of the drive wheel and drive hub assembly relative to the manual wheelchair. The support suspension includes a linear bearing and slide member assembly having at least one linear bearing and a slide member for accommodating the linear movement of the drive wheel assembly and further includes a resilient suspension member that provides a tractive effort force to the drive wheel. The drive wheel assembly is supported on a carriage that is attached to one of the at least one linear bearing or the slide member and a mounting block is attached to the other. The mounting block has a clamp interface with a locating tab that engages a corresponding mounting slot in the mounting clamp.Type: ApplicationFiled: December 23, 2019Publication date: March 3, 2022Applicant: Sunrise Medical (US) LLCInventors: Samuel Traxinger, Mark Greig, Jefferey Bashian, Daniel Zhou
-
Publication number: 20210002444Abstract: Disclosed are foam precursor compositions, foamed compositions, and methods of using these foamed compositions for the stimulation of unconventional reservoirs.Type: ApplicationFiled: July 7, 2020Publication date: January 7, 2021Inventors: Varadarajan DWARAKANATH, Taimur MALIK, Lin ZOU, Jimin Daniel ZHOU, Nabijan NIZAMIDIN, Gregory A. WINSLOW, Reza BANKI, Mohamad SALMAN
-
Publication number: 20070039766Abstract: A wheelchair includes a frame, and a front pivot arm pivotally mounted to the frame at a front pivot point, the front pivot arm having a caster for supporting the frame. A rear pivot arm is pivotally mounted to the frame at a rear pivot point, the rear pivot arm having a caster for supporting the frame. A ground engaging mid-wheel drive wheel is connected to the frame. A linkage connects the front and rear pivot arms to each other in a manner such that an upward or downward rotation of one of the pivot arms about its pivot point causes rotation of the other pivot arm about its pivot point in an opposite rotational direction.Type: ApplicationFiled: August 16, 2006Publication date: February 22, 2007Inventors: Mark Jackson, John Tarter, Mark Greig, Rex Stevens, James Koerlin, Samuel Traxinger, Daniel Zhou, Allen Killebrew