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).
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Publication number: 20260016744Abstract: 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: ApplicationFiled: March 11, 2023Publication date: January 15, 2026Inventors: Sidlgata V. Sreenivasan, Parth Pandya, David Choi, John Ekerdt
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Publication number: 20250284204Abstract: 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: ApplicationFiled: April 29, 2023Publication date: September 11, 2025Inventors: Sidlgata V. Sreenivasan, Parth Pandya, David Choi, Anant Jain
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Publication number: 20250200291Abstract: 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: ApplicationFiled: December 14, 2023Publication date: June 19, 2025Inventors: Michael GRABEN, Gerard Mugisha AKKERHUIS, Mustafa HAFEEZ, David CHOI, Michael WU, Joe FRANCIS, Amitay FEDER, Victor XIE, Nikhil BAHUBALI, Edward J. CAMPBELL, Sean MONTGOMERY
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Patent number: 12185767Abstract: 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: GrantFiled: November 4, 2022Date of Patent: January 7, 2025Assignee: Trillium Medical Products, LLCInventors: Jay Sussman, David Choi
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Patent number: 12168244Abstract: 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: GrantFiled: February 25, 2021Date of Patent: December 17, 2024Assignee: Board of Regents, The University of Texas SystemInventors: Sidlgata V. Sreenivasan, Parth Pandya, David Choi, Shrawan Singhal, Lawrence Dunn
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Publication number: 20230314672Abstract: 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: ApplicationFiled: June 7, 2021Publication date: October 5, 2023Inventors: Sidlgata V. Sreenivasan, David Choi, Parth Pandya, Shrawan Singhal
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Publication number: 20230141346Abstract: 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: ApplicationFiled: November 4, 2022Publication date: May 11, 2023Inventors: Jay Sussman, David Choi
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Publication number: 20230088746Abstract: 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: ApplicationFiled: February 25, 2021Publication date: March 23, 2023Inventors: Sidlgata V. Sreenivasan, Parth Pandya, David Choi, Shrawan Singhal, Lawrence Dunn
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Patent number: 9674729Abstract: 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: GrantFiled: January 9, 2015Date of Patent: June 6, 2017Assignee: Venturi Wireless, Inc.Inventors: Kanapathipillai Ketheesan, David Choi
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Patent number: 9338674Abstract: 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: GrantFiled: December 11, 2014Date of Patent: May 10, 2016Assignee: Venturi Wireless, Inc.Inventors: Kanapathipillai Ketheesan, Krishna Ramadas, Chico Jayanathan, David Choi
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Publication number: 20150124603Abstract: 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: ApplicationFiled: January 9, 2015Publication date: May 7, 2015Inventors: Kanapathipillai Ketheesan, David Choi
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Publication number: 20150092589Abstract: 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: ApplicationFiled: December 11, 2014Publication date: April 2, 2015Inventors: Kanapathipillai Ketheesan, Krishna Ramadas, Chico Jayanathan, David Choi
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Patent number: 8937877Abstract: 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: GrantFiled: January 6, 2012Date of Patent: January 20, 2015Assignee: Venturi IP LLCInventors: Kanapathipillai Ketheesan, David Choi
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Patent number: 8917641Abstract: 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: GrantFiled: December 13, 2012Date of Patent: December 23, 2014Assignee: Venturi IP LLCInventors: Kanapathipillai Ketheesan, Krishna Ramadas, Chico Jayanthan, David Choi
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Patent number: 8388217Abstract: 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: GrantFiled: March 23, 2012Date of Patent: March 5, 2013Inventor: David Choi
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Patent number: 8351358Abstract: 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: GrantFiled: December 7, 2009Date of Patent: January 8, 2013Assignee: Venturi Wireless, Inc.Inventors: Kanapathipillai Ketheesan, Krishna Ramadas, Chico Jayanthan, David Choi
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Publication number: 20120182826Abstract: 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: ApplicationFiled: March 23, 2012Publication date: July 19, 2012Inventor: David Choi
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Patent number: 8172454Abstract: 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: GrantFiled: February 12, 2009Date of Patent: May 8, 2012Inventor: David Choi
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Publication number: 20120106385Abstract: 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: ApplicationFiled: January 6, 2012Publication date: May 3, 2012Inventors: Kanapathipillai KETHEESAN, David Choi
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Publication number: 20120047614Abstract: 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: ApplicationFiled: August 27, 2010Publication date: March 1, 2012Applicant: MEDU-SCIENTIFIC, LTD.Inventor: David Choi