Patents by Inventor Lawrence Dunn

Lawrence Dunn 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).

  • Patent number: 11762284
    Abstract: A method for fabricating patterns. An inverse optimization scheme is implemented to determine process parameters used to obtain a desired film thickness of a liquid resist formulation, where the liquid resist formulation includes a solvent and one or more non-solvent components. A substrate is covered with a substantially continuous film of the liquid resist formulation using one or more of the following techniques: dispensing discrete drops of a diluted monomer on the substrate using an inkjet and allowing the dispensed drops to spontaneously spread and merge, slot die coating and spin-coating. The liquid resist formulation is diluted in the solvent. The solvent is then substantially evaporated from the liquid resist formulation forming a film. A gap between a template and the substrate is then closed. The film is cured to polymerize the film and the substrate is separated from the template leaving the polymerized film on the substrate.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: September 19, 2023
    Assignee: Board of Regents, The University of Texas System
    Inventors: Sidlgata V. Sreenivasan, Shrawan Singhal, Ovadia Abed, Lawrence Dunn
  • Patent number: 11669009
    Abstract: A method for fabricating patterns on a flexible substrate in a roll-to-roll configuration. Drops of a monomer diluted in a solvent are dispensed on a substrate, where the drops spontaneously spread and merge with one another to form a liquid resist formulation. The solvent is evaporated (e.g., blanket evaporation) from the liquid resist formulation followed by selective multi-component resist film evaporation resulting in a non-uniform and substantially continuous film on the substrate. The gap between the film on the substrate and a template is closed such that the film fills the features of the template. After cross-linking the film to polymerize the film, the template is separated from the substrate thereby leaving the polymerized film on the substrate.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: June 6, 2023
    Assignee: Board of Regents, The University of Texas System
    Inventors: Sidlgata V. Sreenivasan, Shrawan Singhal, Ovadia Abed, Lawrence Dunn, Paras Ajay, Ofodike Ezekoye
  • 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
  • Publication number: 20230042873
    Abstract: A method for assembling heterogeneous components. The assembly process includes using a vacuum based pickup mechanism in conjunction with sub-nm precise moiré alignment techniques resulting in highly accurate, parallel assembly of feedstocks.
    Type: Application
    Filed: October 4, 2022
    Publication date: February 9, 2023
    Inventors: Sidlgata V. Sreenivasan, Paras Ajay, Aseem Sayal, Mark McDermott, Shrawan Singhal, Ovadia Abed, Lawrence Dunn, Vipul Goyal, Michael Cullinan
  • Patent number: 11469131
    Abstract: A method for assembling heterogeneous components. The assembly process includes using a vacuum based pickup mechanism in conjunction with sub-nm precise more alignment techniques resulting in highly accurate, parallel assembly of feedstocks.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: October 11, 2022
    Assignee: Board of Regents, The University of Texas System
    Inventors: Sidlgata V. Sreenivasan, Paras Ajay, Aseem Sayal, Mark McDermott, Shrawan Singhal, Ovadia Abed, Lawrence Dunn, Vipul Goyal, Michael Cullinan
  • Publication number: 20210389666
    Abstract: A method for fabricating patterns. An inverse optimization scheme is implemented to determine process parameters used to obtain a desired film thickness of a liquid resist formulation, where the liquid resist formulation includes a solvent and one or more non-solvent components. A substrate is covered with a substantially continuous film of the liquid resist formulation using one or more of the following techniques: dispensing discrete drops of a diluted monomer on the substrate using an inkjet and allowing the dispensed drops to spontaneously spread and merge, slot die coating and spin-coating. The liquid resist formulation is diluted in the solvent. The solvent is then substantially evaporated from the liquid resist formulation forming a film. A gap between a template and the substrate is then closed. The film is cured to polymerize the film and the substrate is separated from the template leaving the polymerized film on the substrate.
    Type: Application
    Filed: August 3, 2017
    Publication date: December 16, 2021
    Inventors: Sidlgata V. Sreenivasan, Shrawan Singhal, Ovadia Abed, Lawrence Dunn
  • Publication number: 20210341833
    Abstract: A method for fabricating patterns on a flexible substrate in a roll-to-roll configuration. Drops of a monomer diluted in a solvent are dispensed on a substrate, where the drops spontaneously spread and merge with one another to form a liquid resist formulation. The solvent is evaporated (e.g., blanket evaporation) from the liquid resist formulation followed by selective multi-component resist film evaporation resulting in a non-uniform and substantially continuous film on the substrate. The gap between the film on the substrate and a template is closed such that the film fills the features of the template. After cross-linking the film to polymerize the film, the template is separated from the substrate thereby leaving the polymerized film on the substrate.
    Type: Application
    Filed: August 3, 2017
    Publication date: November 4, 2021
    Inventors: Sidlgata V. Sreenivasan, Shrawan Singhal, Ovadia Abed, Lawrence Dunn, Paras Ajay, Ofodike Ezekoye
  • Publication number: 20210134640
    Abstract: A method for assembling heterogeneous components. The assembly process includes using a vacuum based pickup mechanism in conjunction with sub-nm precise more alignment techniques resulting in highly accurate, parallel assembly of feedstocks.
    Type: Application
    Filed: December 22, 2017
    Publication date: May 6, 2021
    Inventors: Sidlgata V. Sreenivasan, Paras Ajay, Aseem Sayal, Mark McDermott, Shrawan Singhal, Ovadia Abed, Lawrence Dunn, Vipul Goyal, Michael Cullinan
  • Publication number: 20190139456
    Abstract: A portable system to enable broad access to micro- and nano-scale technologies. The portable system includes a fabrication module configured to enable creation of a small tech device or structure or to enable demonstration of a small tech process. The portable system further includes a metrology module configured to allow measuring, testing or characterizing a property of the small tech device, structure or process. Furthermore, the portable system includes a quality control module configured to validate results from the metrology module against a set of expected results measured independently.
    Type: Application
    Filed: March 21, 2017
    Publication date: May 9, 2019
    Inventors: Sidlgata V. Sreenivasan, Shrawan Singhal, Ovadia Abed, Lawrence Dunn, Aseem Sayal, Benjamin Eynon
  • Patent number: 9718096
    Abstract: An inkjet-based process for programmable deposition of thin films of a user-defined profile. Drops of a pre-cursor liquid organic material are dispensed at various locations on a substrate by a multi-jet. A superstrate is held in a roll-to-roll configuration such that a first contact of the drops is made by a front side of the superstrate thereby initiating a liquid front that spreads outward merging with the drops to form a contiguous film captured between the substrate and the superstrate. A non-equilibrium transient state of the superstrate, the contiguous film and the substrate then occurs after a duration of time. The contiguous film is then cured to crosslink it into a polymer. The superstrate is then separated from the polymer thereby leaving a polymer film on the substrate. In such a manner, non-uniform films can be formed without significant material wastage in an inexpensive manner.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: August 1, 2017
    Assignee: Board of Regents, The University of Texas System
    Inventors: Sidlgata V. Sreenivasan, Shrawan Singhal, Ovadia Abed, Lawrence Dunn
  • Publication number: 20160318066
    Abstract: An inkjet-based process for programmable deposition of thin films of a user-defined profile. Drops of a pre-cursor liquid organic material are dispensed at various locations on a substrate by a multi-jet. A superstrate is held in a roll-to-roll configuration such that a first contact of the drops is made by a front side of the superstrate thereby initiating a liquid front that spreads outward merging with the drops to form a contiguous film captured between the substrate and the superstrate. A non-equilibrium transient state of the superstrate, the contiguous film and the substrate then occurs after a duration of time. The contiguous film is then cured to crosslink it into a polymer. The superstrate is then separated from the polymer thereby leaving a polymer film on the substrate. In such a manner, non-uniform films can be formed without significant material wastage in an inexpensive manner.
    Type: Application
    Filed: July 12, 2016
    Publication date: November 3, 2016
    Inventors: Sidlgata V. Sreenivasan, Shrawan Singhal, Ovadia Abed, Lawrence Dunn
  • Patent number: 9014847
    Abstract: Systems for controlling the dispensing of medication are provided. The system can include a dispenser device capable of holding and delivering at least one medication. A controller can be operatively connected to the dispenser. The controller can automatically operate the dispenser for movement to a dispensing position at a predetermined time. An electronic communication device for connecting the system to a remote facility can be provided. An identification verification device for restricting access to the system can be in communication with the controller of the system. A location determination device for determining the location of the system can also be provided.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: April 21, 2015
    Inventor: Lawrence A. Dunn
  • Patent number: 8636172
    Abstract: Devices, systems and methods for controlling dispensing of medication are provided. A dispenser device used, for example, in the systems and methods can include a housing for storing units of medication and a dispensing well having an opening therein to permit removal of units of medication therefrom. The dispenser device can include first and second slides having openings therein that are configured to funnel a unit of medication toward the opening in the dispensing well. The opening in the first slide can be configured to funnel a unit of medication to the opening of the second slide upon movement of the first slide, while the second slide can be configured to funnel the unit of medication to the opening in the dispensing well upon movement of the second slide into a position that is aligned with the opening in the dispensing well.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: January 28, 2014
    Inventor: Lawrence A. Dunn
  • Publication number: 20130166066
    Abstract: Methods for controlling the dispensing of medication are provided. The method can include holding at least one medication within a dispenser and alerting a patient that a dose of medication is to be taken or an optional dose of medication is available to be taken. Once the patient is present for receiving a does of medication, the identification of the patient can be confirmed. Upon confirmation of the identification, a dose of medication for the patient can then be dispensed and removal of medication from dispenser can be confirmed. The method can also include providing a location determination device with the dispenser to permit locating the dispenser.
    Type: Application
    Filed: November 30, 2012
    Publication date: June 27, 2013
    Inventor: Lawrence A. Dunn
  • Patent number: 8326455
    Abstract: Methods for controlling the dispensing of medication are provided. The method can include holding at least one medication within a dispenser and alerting a patient that a dose of medication is to be taken or an optional dose of medication is available to be taken. Once the patient is present for receiving a does of medication, the identification of the patient can be confirmed. Upon confirmation of the identification, a dose of medication for the patient can then be dispensed and removal of medication from dispenser can be confirmed. The method can also include providing a location determination device with the dispenser to permit locating the dispenser.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: December 4, 2012
    Inventor: Lawrence A. Dunn
  • Publication number: 20120053867
    Abstract: A system and methods for measuring the performance of individual strings of photovoltaic (PV) modules in a PV array, including a string combiner box with integrated capability for measurement of string current versus voltage (I-V) characteristics. The system may include calibrated solar insolation reference devices; environmental meters; and/or at least one system computer. The string combiner box allows: high precision string performance measurement during normal power generating operation; isolation of individual strings or groups of strings; and the performance of high-precision full I-V sweeps on individual strings. Methods are provided to analyze measured I-V curves to compensate for the effects of temperature and other variables thereby increasing PV module performance measurement accuracy.
    Type: Application
    Filed: August 24, 2011
    Publication date: March 1, 2012
    Applicant: ATONOMETRICS, INC.
    Inventors: Lawrence Dunn, Michael Gostein, William Stueve
  • Publication number: 20110166700
    Abstract: Devices, systems and methods for controlling dispensing of medication are provided. A dispenser device used, for example, in the systems and methods can include a housing for storing units of medication. A dispensing well can reside within the housing with the dispensing well having an opening therein to permit removal of units of medication therefrom. The dispenser device can include a first slide having an opening therein that is configured to funnel a unit of medication toward the opening in the dispensing well. The dispenser device can also include a second slide disposed between the opening in the dispensing well and the first slide. The second slide can have an opening therein that is alignable with the opening in the dispensing well and the opening in the first slide.
    Type: Application
    Filed: February 7, 2011
    Publication date: July 7, 2011
    Inventor: Lawrence A. Dunn
  • Publication number: 20110125318
    Abstract: Systems for controlling the dispensing of medication are provided. The system can include a dispenser device capable of holding and delivering at least one medication. A controller can be operatively connected to the dispenser. The controller can automatically operate the dispenser for movement to a dispensing position at a predetermined time. An electronic communication device for connecting the system to a remote facility can be provided. An identification verification device for restricting access to the system can be in communication with the controller of the system. A location determination device for determining the location of the system can also be provided.
    Type: Application
    Filed: November 24, 2010
    Publication date: May 26, 2011
    Inventor: Lawrence A. Dunn
  • Publication number: 20110125317
    Abstract: Methods for controlling the dispensing of medication are provided. The method can include holding at least one medication within a dispenser and alerting a patient that a dose of medication is to be taken or an optional dose of medication is available to be taken. Once the patient is present for receiving a does of medication, the identification of the patient can be confirmed. Upon confirmation of the identification, a dose of medication for the patient can then be dispensed and removal of medication from dispenser can be confirmed. The method can also include providing a location determination device with the dispenser to permit locating the dispenser.
    Type: Application
    Filed: November 24, 2010
    Publication date: May 26, 2011
    Inventor: Lawrence A. Dunn
  • Patent number: 7885725
    Abstract: Devices and systems for controlling the dispensing of medication and methods for using the devices and systems are provided. The system can include a dispenser device capable of holding and delivering at least one medication. A controller can be operatively connected to the dispenser. The controller can automatically operate the dispenser for movement to a dispensing position at a predetermined time. An electronic communication device for connecting the system to a remote facility can be provided. An identification verification device for restricting access to the system can be in communication with the controller of the system. A location determination device for determining the location of the system can also be provided.
    Type: Grant
    Filed: January 4, 2007
    Date of Patent: February 8, 2011
    Inventor: Lawrence A. Dunn