Patents by Inventor David Choi

David Choi 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: 20260016744
    Abstract: A method for fabricating functional optical components. A detackable adhesive layer is deposited on an intermediate substrate. A curable liquid is deposited onto the detackable adhesive layer on the intermediate substrate. An imprint template is used to transfer patterns onto the curable liquid followed by curing thereby forming an imprinted patterned material on the intermediate substrate. A layer of functional material is deposited on the imprinted patterned material. Furthermore, a polymer layer is deposited on top of the functional material layer. A correlated etch of the polymer layer and the functional material layer is then performed thereby forming an etched functional material surface. The etched functional material surface is bonded to a final substrate. The imprinted patterned material is then detacked from the intermediate substrate at the detackable adhesive layer.
    Type: Application
    Filed: March 11, 2023
    Publication date: January 15, 2026
    Inventors: Sidlgata V. Sreenivasan, Parth Pandya, David Choi, John Ekerdt
  • Publication number: 20250284204
    Abstract: A system for nanoscale precision programmable profiling. The system includes a first film stack with a superstrate, a substrate and a liquid profiling material in between the superstrate and the substrate, where the first film stack absorbs energy from photons in a range of deep ultraviolet to long-wave infrared. Furthermore, the system includes a second film stack with a solid profiling material located on the substrate, where there is a refractive index difference at an interface of the substrate and the solid profiling material. The refractive index difference enables a film thickness measurement subsystem to measure a thickness profile of the solid profiling material. Additionally, the system includes a thermal actuation subsystem to locally heat the first film stack to enable movement of the liquid profiling material.
    Type: Application
    Filed: April 29, 2023
    Publication date: September 11, 2025
    Inventors: Sidlgata V. Sreenivasan, Parth Pandya, David Choi, Anant Jain
  • Publication number: 20250200291
    Abstract: In some implementations, the techniques described herein relate to a method including: (i) obtaining, by a processor, at least one statistic related to a recent history of a fantasy athletic team managed by a user within a fantasy athletic league, (ii) creating, by the processor, a prompt for a large language model (LLM), the prompt comprising, the at least one statistic and a set of constraints configured to produce as output from the LLM a fantasy team recap that conforms to at least one predetermined guideline, (iii) providing, by the processor, the prompt to the LLM as input, and (iv) causing display, by the processor, of the fantasy team recap output by the LLM in response to the prompt.
    Type: Application
    Filed: December 14, 2023
    Publication date: June 19, 2025
    Inventors: Michael GRABEN, Gerard Mugisha AKKERHUIS, Mustafa HAFEEZ, David CHOI, Michael WU, Joe FRANCIS, Amitay FEDER, Victor XIE, Nikhil BAHUBALI, Edward J. CAMPBELL, Sean MONTGOMERY
  • Patent number: 12185767
    Abstract: An infused undergarment device for use as a delivery device for colonizing the vagina with Lactobacillus in patients who test positive for or report symptoms of vaginitis. The infused undergarment employs a sponge impregnated with Lactobacillus crispatus Freeze Dried Powder. The sponge, having channels to direct the powder, is held in place by a mesh fabric sewn into the groin portion of the undergarment, which allows the c n ay delivery of the powder. The undergarment may also be used to help maintain normal flora of the vagina in the absence of symptoms in a prophylactic manner to prevent future infection. The undergarment is sealed in an opaque aluminum foil package to prevent light and environment air from degrading effectiveness.
    Type: Grant
    Filed: November 4, 2022
    Date of Patent: January 7, 2025
    Assignee: Trillium Medical Products, LLC
    Inventors: Jay Sussman, David Choi
  • Patent number: 12168244
    Abstract: A method and system for nanoscale precision programmable profiling on substrates. Profiling material is dispensed on a substrate or a superstrate. The superstrate is brought in contact with the substrate. The profiling material is then cured after bringing the superstrate in contact with the substrate. The superstrate is separated from the substrate after curing. An optical metrology of points on the substrate corresponding to the final substrate profile is then performed.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: December 17, 2024
    Assignee: Board of Regents, The University of Texas System
    Inventors: Sidlgata V. Sreenivasan, Parth Pandya, David Choi, Shrawan Singhal, Lawrence Dunn
  • Publication number: 20230314672
    Abstract: A method for introducing a customized variation of a geometric parameter in a nanoscale pattern on a substrate. A nanoscale precision programmable profiling process is conducted on one or more regions of the substrate with the nanoscale pattern, where the nanoscale precision programmable profiling process is used to deposit a profiling film with a thickness profile that is a function of the customized variation of the geometric parameter in the nanoscale pattern. The method further comprises conducting a plasma etch process of the profiling film and the material of the nanoscale pattern that converts the thickness profile of the profiling film into the customized variation of the geometric parameter in the nanoscale pattern, where the customized variation is a function of the thickness profile of the profiling film.
    Type: Application
    Filed: June 7, 2021
    Publication date: October 5, 2023
    Inventors: Sidlgata V. Sreenivasan, David Choi, Parth Pandya, Shrawan Singhal
  • Publication number: 20230141346
    Abstract: An infused undergarment device for use as a delivery device for colonizing the vagina with Lactobacillus in patients who test positive for or report symptoms of vaginitis. The infused undergarment employs a sponge impregnated with Lactobacillus crispatus Freeze Dried Powder. The sponge, having channels to direct the powder, is held in place by a mesh fabric sewn into the groin portion of the undergarment, which allows the c n ay delivery of the powder, The undergarment may also be used to help maintain normal flora of the vagina in the absence of symptoms in a prophylactic manner to prevent future infection. The undergarment is sealed in an opaque aluminum foil package to prevent light and environment air from degrading effectiveness.
    Type: Application
    Filed: November 4, 2022
    Publication date: May 11, 2023
    Inventors: Jay Sussman, David Choi
  • Publication number: 20230088746
    Abstract: A method and system for nanoscale precision programmable profiling on substrates. Profiling material is dispensed on a substrate or a superstrate. The superstrate is brought in contact with the substrate. The profiling material is then cured after bringing the superstrate in contact with the substrate. The superstrate is separated from the substrate after curing. An optical metrology of points on the substrate corresponding to the final substrate profile is then performed.
    Type: Application
    Filed: February 25, 2021
    Publication date: March 23, 2023
    Inventors: Sidlgata V. Sreenivasan, Parth Pandya, David Choi, Shrawan Singhal, Lawrence Dunn
  • Patent number: 9674729
    Abstract: A bandwidth estimation algorithm on shared links detects peaks and/or average per-user bandwidth. Estimating is performed at the transport or IP layer with no assistance from lower layer (PHY, MAC, etc.) and the techniques can be used for any of adjusting the level of video optimization to the available bandwidth; driving QoS decisions at the transmitter based on available bandwidth; improving QoS enforcement during transitions among hybrid technologies on a wireless links; and correcting estimates on devices delivering bursty payload.
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: June 6, 2017
    Assignee: Venturi Wireless, Inc.
    Inventors: Kanapathipillai Ketheesan, David Choi
  • Patent number: 9338674
    Abstract: A system for optimizing communications on a radio network by altering transitions between different link states that includes several modules. The activity, environment, and load module monitor monitors the link layer based on spectral-load metrics and radio-link metrics. The state transition control module determines when user equipment transitions between different states based on the type of user equipment, user equipment battery life, whether the user equipment is connected to an alternating current outlet, a spectral cost, and a backhaul cost. The channel state influencer module uses any of direct messages, ping messages, and keep-alive messages to influence the link state. The policy and preference handler enables or disables transitions based on the bearer technology type, the type of user equipment, the user's subscription plan, and the load level on the network.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: May 10, 2016
    Assignee: Venturi Wireless, Inc.
    Inventors: Kanapathipillai Ketheesan, Krishna Ramadas, Chico Jayanathan, David Choi
  • Publication number: 20150124603
    Abstract: A bandwidth estimation algorithm on shared links detects peaks and/or average per-user bandwidth. Estimating is performed at the transport or IP layer with no assistance from lower layer (PHY, MAC, etc.) and the techniques can be used for any of adjusting the level of video optimization to the available bandwidth; driving QoS decisions at the transmitter based on available bandwidth; improving QoS enforcement during transitions among hybrid technologies on a wireless links; and correcting estimates on devices delivering bursty payload.
    Type: Application
    Filed: January 9, 2015
    Publication date: May 7, 2015
    Inventors: Kanapathipillai Ketheesan, David Choi
  • Publication number: 20150092589
    Abstract: A system for optimizing communications on a radio network by altering transitions between different link states that includes several modules. The activity, environment, and load module monitor monitors the link layer based on spectral-load metrics and radio-link metrics. The state transition control module determines when user equipment transitions between different states based on the type of user equipment, user equipment battery life, whether the user equipment is connected to an alternating current outlet, a spectral cost, and a backhaul cost. The channel state influencer module uses any of direct messages, ping messages, and keep-alive messages to influence the link state. The policy and preference handler enables or disables transitions based on the bearer technology type, the type of user equipment, the user's subscription plan, and the load level on the network.
    Type: Application
    Filed: December 11, 2014
    Publication date: April 2, 2015
    Inventors: Kanapathipillai Ketheesan, Krishna Ramadas, Chico Jayanathan, David Choi
  • Patent number: 8937877
    Abstract: A bandwidth estimation algorithm on shared links detects peaks and/or average per-user bandwidth. Estimating is performed at the transport or IP layer with no assistance from lower layer (PHY, MAC, etc.) and the techniques can be used for any of adjusting the level of video optimization to the available bandwidth; driving QoS decisions at the transmitter based on available bandwidth; improving QoS enforcement during transitions among hybrid technologies on a wireless links; and correcting estimates on devices delivering bursty payload.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: January 20, 2015
    Assignee: Venturi IP LLC
    Inventors: Kanapathipillai Ketheesan, David Choi
  • Patent number: 8917641
    Abstract: A system for optimizing communications on a radio network by altering transitions between different link states that includes several modules. The activity, environment, and load module monitor monitors the link layer based on spectral-load metrics and radio-link metrics. The state transition control module determines when user equipment transitions between different states based on the type of user equipment, user equipment battery life, whether the user equipment is connected to an alternating current outlet, a spectral cost, and a backhaul cost. The channel state influencer module uses any of direct messages, ping messages, and keep-alive messages to influence the link state. The policy and preference handler enables or disables transitions based on the bearer technology type, the type of user equipment, the user's subscription plan, and the load level on the network.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: December 23, 2014
    Assignee: Venturi IP LLC
    Inventors: Kanapathipillai Ketheesan, Krishna Ramadas, Chico Jayanthan, David Choi
  • Patent number: 8388217
    Abstract: A cooling stick for a blender includes a cylindrical member designed to fit tightly through a circular aperture extending through the blender lid. The member has a lower portion and an upper portion with a surrounding rim of a diameter larger than the circular aperture. The lower portion has a lower end sized and shaped to avoid contact with the blender blade assembly. The cylindrical member has an interior chamber, an opening extending from an exterior of the member to the chamber and means for sealing the opening. A cooling fluid is located within the interior chamber. The fluid is cooled or frozen when the cooling stick is located in a cooling environment. When the chilled cooling stick is mounted to the lid of the blender, the cooling stick will cool contents of the blender when the blender is operated. The cooling stick also cools the blender contents after operation.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: March 5, 2013
    Inventor: David Choi
  • Patent number: 8351358
    Abstract: A system for optimizing communications on a radio network by altering transitions between different link states that includes several modules. The activity, environment, and load module monitor monitors the link layer based on spectral-load metrics and radio-link metrics. The state transition control module determines when user equipment transitions between different states based on the type of user equipment, user equipment battery life, whether the user equipment is connected to an alternating current outlet, a spectral cost, and a backhaul cost. The channel state influencer module uses any of direct messages, ping messages, and keep-alive messages to influence the link state. The policy and preference handler enables or disables transitions based on the bearer technology type, the type of user equipment, the user's subscription plan, and the load level on the network.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: January 8, 2013
    Assignee: Venturi Wireless, Inc.
    Inventors: Kanapathipillai Ketheesan, Krishna Ramadas, Chico Jayanthan, David Choi
  • Publication number: 20120182826
    Abstract: A cooling stick for a blender includes a cylindrical member designed to fit tightly through a circular aperture extending through the blender lid. The member has a lower portion and an upper portion with a surrounding rim of a diameter larger than the circular aperture. The lower portion has a lower end sized and shaped to avoid contact with the blender blade assembly. The cylindrical member has an interior chamber, an opening extending from an exterior of the member to the chamber and means for sealing the opening. A cooling fluid is located within the interior chamber. The fluid is cooled or frozen when the cooling stick is located in a cooling environment. When the chilled cooling stick is mounted to the lid of the blender, the cooling stick will cool contents of the blender when the blender is operated. The cooling stick also cools the blender contents after operation.
    Type: Application
    Filed: March 23, 2012
    Publication date: July 19, 2012
    Inventor: David Choi
  • Patent number: 8172454
    Abstract: A cooling stick for a blender includes a cylindrical member designed to fit tightly through a circular aperture extending through the blender lid. The member has a lower portion and an upper portion with a surrounding rim of a diameter larger than the circular aperture. The lower portion has a lower end sized and shaped to avoid contact with the blender blade assembly. The cylindrical member has an interior chamber, an opening extending from an exterior of the member to the chamber and means for sealing the opening. A cooling fluid is located within the interior chamber. The fluid is cooled or frozen when the cooling stick is located in a cooling environment. When the chilled cooling stick is mounted to the lid of the blender, the cooling stick will cool contents of the blender when the blender is operated. The cooling stick also cools the blender contents after operation.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: May 8, 2012
    Inventor: David Choi
  • Publication number: 20120106385
    Abstract: A bandwidth estimation algorithm on shared links detects peaks and/or average per-user bandwidth. Estimating is performed at the transport or IP layer with no assistance from lower layer (PHY, MAC, etc.) and the techniques can be used for any of adjusting the level of video optimization to the available bandwidth; driving QoS decisions at the transmitter based on available bandwidth; improving QoS enforcement during transitions among hybrid technologies on a wireless links; and correcting estimates on devices delivering bursty payload.
    Type: Application
    Filed: January 6, 2012
    Publication date: May 3, 2012
    Inventors: Kanapathipillai KETHEESAN, David Choi
  • Publication number: 20120047614
    Abstract: A disposable face shield having an improved attachment mechanism for securing a band to attach the shield to a user's face is disclosed. The disposable face shield includes a flexible transparent member having at least one slit therethrough. The slit edges have points that grab the elastic holding strap at a selected location to make a selected adjustment of the face shield to the user's head. A flexible forehead support member is provided on the upper portion of the transparent member to nestle against a user's forehead.
    Type: Application
    Filed: August 27, 2010
    Publication date: March 1, 2012
    Applicant: MEDU-SCIENTIFIC, LTD.
    Inventor: David Choi