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    AMPHIPHILIC POLYSACCHARIDES, POLYSACCHARIDE-BASED HYDROGELS, AND METHODS OF MANUFACTURE
    2.
    发明申请
    AMPHIPHILIC POLYSACCHARIDES, POLYSACCHARIDE-BASED HYDROGELS, AND METHODS OF MANUFACTURE 有权

    公开(公告)号：US20250101139A1

    公开(公告)日：2025-03-27

    申请号：US18974476

    申请日：2024-12-09

    Applicant: Virginia Tech Intellectual Properties, Inc.

    Inventor： Kevin J. Edgar ,  Brittany L.B. Nichols ,  Junyi Chen ,  Charles Frazier ,  Ann Norris

    IPC: C08B37/08 ,  C08B11/04 ,  C08B11/20 ,  C08B31/12 ,  C08B31/18 ,  C08B33/04 ,  C08B37/02 ,  C08J3/24

    Abstract: A method for the synthesis of alkyl ω-carboxy(hydroxyethyl) polysaccharides is described. The method includes methylating or ethylating a polysaccharide or providing a methylated or ethylated polysaccharide, hydroxyethylating the methylated or ethylated polysaccharide, and oxidizing the hydroxyethylated polysaccharide to form the ω-carboxy(hydroxyethyl) polysaccharide. A method for the synthesis of oxidized polysaccharides is also described. The method includes hydroxypropylating a polysaccharide and oxidizing the hydroxypropylated polysaccharides. A method for the production of a solid capable of forming a hydrogel is also described. The method includes combining a first solution comprising an oxidized oligo(hydroxypropyl) polysaccharide bearing one or more ketone groups with a second solution comprising an amine substituted polysaccharide to form a third solution, and removing solvent from the third solution to form the solid, or adding an additional solvent to the third solution to precipitate the solid. Novel polysaccharides and hydrogels prepared according to these methods are also described.

    MATRIX INTEGRATED TRANSFORMER WITH BUILT-IN LEAKAGE INDUCTANCE
    4.
    发明申请
    MATRIX INTEGRATED TRANSFORMER WITH BUILT-IN LEAKAGE INDUCTANCE 有权

    公开(公告)号：US20250087410A1

    公开(公告)日：2025-03-13

    申请号：US18462723

    申请日：2023-09-07

    Applicant: VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.

    Inventor： Feng Jin ,  Ahmed Nabih ,  Qiang Li

    IPC: H01F27/30 ,  H01F27/24 ,  H02M3/335

    Abstract: Power converters with integrated transformers and resonant inductors are described. An example integrated transformer can be electrically coupled between a primary-side converter stage and a secondary-side converter stage in a power converter. The integrated transformer can include a magnetic core with plurality of core legs, a primary winding extending around each of the plurality of core legs, and a secondary winding extending around each of the plurality of core legs. A winding direction of the primary winding is alternated between adjacent core legs among the plurality of core legs, and a winding direction of the secondary winding is alternated between adjacent core legs among the plurality of core legs. Additionally, a number of winding turns of the primary winding and a number of winding turns of the secondary winding on a first core leg is different than on a second core leg among the plurality of core legs.

    LEARNING RADIO SIGNALS USING RADIO SIGNAL TRANSFORMERS
    5.
    发明申请
    LEARNING RADIO SIGNALS USING RADIO SIGNAL TRANSFORMERS 有权

    公开(公告)号：US20250045581A1

    公开(公告)日：2025-02-06

    申请号：US18799049

    申请日：2024-08-09

    Applicant: Virginia Tech Intellectual Properties, Inc.

    Inventor： Timothy James O`Shea

    IPC: G06N3/08 ,  G06N3/045 ,  H04B1/00 ,  H04B17/309

    Abstract: Methods, systems, and apparatus, including computer programs encoded on a storage medium, for processing radio signals. In once aspect, a system is disclosed that includes a processor and a storage device storing computer code that includes operations. The operations may include obtaining first output data generated by a first neural network based on the first neural network processing a received radio signal, receiving, by a signal transformer, a second set of input data that includes (i) the received radio signal and (ii) the first output data, generating, by the signal transformer, data representing a transformed radio signal by applying one or more transforms to the received radio signal, providing the data representing the transformed radio signal to a second neural network, obtaining second output data generated by the second neural network, and determining based on the second output data a set of information describing the received radio signal.

    VIRTUAL REALITY CLINICAL IMMERSION
    6.
    发明申请
    VIRTUAL REALITY CLINICAL IMMERSION 有权

    公开(公告)号：US20250014289A1

    公开(公告)日：2025-01-09

    申请号：US18763083

    申请日：2024-07-03

    Applicant: Virginia Tech Intellectual Properties, Inc.

    Inventor： Jennifer S. Wayne ,  Cameron Moore ,  Wallace Santos Lages

    IPC: G06T19/00 ,  G09B5/06

    Abstract: Disclosed herein are methods and systems for creating educational virtual reality environments. One or more cameras may capture 360-degree images of a medical environment. Each of the 360-degree images are captured with a camera being placed at a respective location. A computing device may create a virtual reality environment of the medical environment based on the 360-degree images, by, for each of the 360-degree images, placing a user viewpoint at the respective location of the respective camera that captured the respective 360-degree image, placing a graphical representation of a first class at each other respective location that is visible in the respective 360-degree image, and placing a graphical representation of a second class over each object visible in the respective 360-degree image that has particular educational content assigned to the object. The computing device may output, for interactive display at a virtual reality device, the virtual reality environment.

    High-speed omnidirectional underwater propulsion mechanism
    9.
    发明授权
    High-speed omnidirectional underwater propulsion mechanism 有权

    公开(公告)号：US12065227B2

    公开(公告)日：2024-08-20

    申请号：US17531007

    申请日：2021-11-19

    Applicant: VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.

    Inventor： Taylor Njaka ,  Pinhas Ben-Tzvi ,  Stefano Brizzolara

    IPC: B63H1/26 ,  B63B39/00 ,  B63H21/21

    CPC classification number: B63H1/26 ,  B63B39/00 ,  B63H21/21 ,  B63H2021/216

    Abstract: Various examples of a high-speed omnidirectional fully-actuated underwater propulsion mechanism are described. In one example, a propulsion system includes two decoupled counter-rotating rotors centered on a main axis, with each rotor comprising a plurality of pivotable blades projecting radially from the main axis, a servo-swashplate actuation mechanism comprising a plurality of servos and a linkage assembly connected from the servos to the pivotable blades, a blade-axis re-enforcing flap adapter comprising a plurality of stationary flaps, with the blade-axis re-enforcing flap adapter being positioned in a region between the two decoupled counter-rotating rotors centered on the main axis, and a controller. The controller can be configured to calculate control parameters, compensate a first control parameter among the control parameters to reduce cross-coupling of an unwanted force generated by drag forces on the two decoupled counter-rotating rotors, and generate a control signal for each of the servos based on the control parameters.

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