Patents by Inventor Ali Dhinojwala

Ali Dhinojwala 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: 20220267627
    Abstract: In various embodiments, the present invention is directed to photothermal-responsive melanin-based nanocomposites comprising a plurality of natural or synthetic melanin nanoparticles distributed with a polymer matrix suitable for use in anti-counterfeiting, photothermal responsive-communication, sensors, and heat management, among other applications. In some embodiments, the present invention will be an ink, paint, or other coating comprising the photothermal-responsive melanin-based nanocomposites. In some embodiments, the present invention is directed to a written message or design comprising one or more of the photothermal-responsive melanin-based nanocomposites. In some of these embodiments, the written message or design will be comprised of two ore more of the photothermal-responsive melanin-based nanocomposites having different concentrations of natural or synthetic melanin nanoparticles.
    Type: Application
    Filed: December 13, 2021
    Publication date: August 25, 2022
    Applicant: THE UNIVERSITY OF AKRON
    Inventors: Ali Dhinojwala, Mario Echeverri, Anvay Arun Patil
  • Publication number: 20210373358
    Abstract: In various embodiments, the present invention is directed to contact lenses that utilize a multilayer coating of alternating high RI materials, such as melanin or polydopamine (PDA) and other low RI materials to create tunable iridescent colors and contain melanin or similar materials that impart photoprotection due to their broadband UV-vis absorption spectrum and ability to quench radicals.
    Type: Application
    Filed: March 29, 2021
    Publication date: December 2, 2021
    Inventors: Ali Dhinojwala, Saranshu Singla
  • Publication number: 20210347646
    Abstract: A process of preparing a polydopamine aerogel comprising first mixing together a silica precursor and an amine-functionalized silica precursor in a solvent to form a first solution. Then, adding an acid catalyst to the first solution to form a silica gel. Then, equilibrating the silica gel in a 50/50 solvent/water mixture. Wherein the final step in the process is to add about 1 mg/ml solution of a dopamine monomer to the silica gel to form a polydopamine aerogel.
    Type: Application
    Filed: September 18, 2020
    Publication date: November 11, 2021
    Inventors: Gabrielle Sabrina Rey, Saranshu Singla, Ali Dhinojwala, Stephanie Vivod
  • Patent number: 11001088
    Abstract: In one or more embodiments, the present invention provides a method of applying or printing structural colors to a substrate that involves pre-treatment of the substrate surface to prevent absorption of the fluid containing the particles. This allows the fluid to maintain their sessile drop shapes and as the water evaporates, the colloidal particles spontaneously assemble within the confined geometry into semi-ordered structures that interact with light to produce structural color. While the pre-treatment may be done in a variety of ways, application of a, hydrophobic and/or oleophobic coating, like 1H-IH,2H-perfluoro-1-dodecene (C10F21—CH?CH2) (perfluoro) monomer, fluoroalkyls, fluorohydroalkyls, cyclo-fluoroalkyls, fluorobenzen, by plasma-enhanced chemical vapor deposition (cold plasma treatment) has been found to be effective, particularly for printing applications. These treated substrates allow production of a wide range of structural colors using binary systems of nanoparticles.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: May 11, 2021
    Assignee: THE UNIVERSITY OF AKRON
    Inventors: Ali Dhinojwala, Mario Alberto Echeverri, Anvay Arun Patil
  • Publication number: 20200171869
    Abstract: In one or more embodiments, the present invention provides a method of applying or printing structural colors to a substrate that involves pre-treatment of the substrate surface to prevent absorption of the fluid containing the particles. This allows the fluid to maintain their sessile drop shapes and as the water evaporates, the colloidal particles spontaneously assemble within the confined geometry into semi-ordered structures that interact with light to produce structural color. While the pre-treatment may be done in a variety of ways, application of a, hydrophobic and/or oleophobic coating, like 1H-IH,2H-perfluoro-1-dodecene (C10F21—CH?CH2) (perfluoro) monomer, fluoroalkyls, fluorohydroalkyls, cyclo-fluoroalkyls, fluorobenzen, by plasma-enhanced chemical vapor deposition (cold plasma treatment) has been found to be effective, particularly for printing applications. These treated substrates allow production of a wide range of structural colors using binary systems of nanoparticles.
    Type: Application
    Filed: December 3, 2019
    Publication date: June 4, 2020
    Applicant: THE UNIVERSITY OF AKRON
    Inventors: Ali DHINOJWALA, Mario Alberto ECHEVERRI, Anvay Arun PATIL
  • Patent number: 10414864
    Abstract: The present invention is directed to a novel group of amino acid-based poly(ester urea)s (PEUs) for use in biodegradable adhesive and related methods for their making and use. These novel amino acid-based PEUs have a wide variation in mechanical properties and degradation behavior that can be tuned by varying the amino acids and polyols used to form the polyester monomers that form the PEUs. Importantly, these novel PEUs have been shown to be non-toxic in vitro and in vivo and may be suitable to a wide variety of biomedical and other uses. In some embodiments, the adhesive properties of these degradable amino acid-based poly(ester urea) adhesives has been further improved by the incorporation of controlled amounts of catechol functional groups into the side chains of the PEU via post-polymerization functionalization chemistry.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: September 17, 2019
    Assignee: THE UNIVERSITY OF AKRON
    Inventors: Matthew Becker, Jinjun Zhou, Adrian Defante, Ali Dhinojwala
  • Publication number: 20190275491
    Abstract: In various embodiments, the present invention is directed to a facile one-pot reverse emulsion process to assemble core-shell nanoparticles (CS-SMNPs) into bright and noniridescent photonic supraballs. In one or more embodiments, the present invention is directed to core-shell nanoparticles having an inner high refractive index (RI) core and an outer low RI shell. In one or more embodiment, the present invention includes core-shell nanoparticles using high RI (˜1.74) melanin cores and low-RI (˜1.45) silica shells. In various embodiments, these nanoparticles may be self-assembled into bright and noniridescent supraballs using a scalable one-pot reverse emulsion process. According to various embodiments of the present invention, it is possible to generate a full spectrum of structural colors with the combination of only two ingredients, synthetic melanin and silica.
    Type: Application
    Filed: November 22, 2017
    Publication date: September 12, 2019
    Inventors: Ali DHINOJWALA, Ming XIAO, Ziying HU, Matthew SHAWKEY, Nathan GIANNESCHI
  • Patent number: 10336923
    Abstract: Provided is a pressure sensitive adhesive polymer comprising adhesive polymerscrosslinked with a crosslinker that includes a photoresponsive group. Also provided is a method for preparing a pressure sensitive adhesive polymer comprising: polymerizing an vinyl monomer and photoresponsive crosslinker with two acryl end groups.
    Type: Grant
    Filed: May 15, 2015
    Date of Patent: July 2, 2019
    Assignee: The University of Akron
    Inventors: Abraham Joy, Ali Dhinojwala, Kaushik Mishra
  • Patent number: 10245625
    Abstract: A method for creating a superhydrophobic coated nanoporous assembly includes the steps of: providing a nanoporous assembly formed of discrete and/or continuous structures that provide a morphology defining pores of less than 1 micron between neighboring discrete and continuous structures; bringing gaseous plasma precursors in the presence of the nanoporous assembly and in the presence of a plasma generator; employing the plasma generator to convert the gaseous plasma precursors to the plasma state; and permitting the plasma precursors to deposit as a coating on the nanoporous assembly through plasma polymerization techniques the deposition thereof preserving the porous structure of the nanoporous assembly, the deposited coating exhibiting a surface energy of less than 30 dynes/cm.
    Type: Grant
    Filed: July 9, 2012
    Date of Patent: April 2, 2019
    Assignee: THE UNIVERSITY OF AKRON
    Inventors: Ali Dhinojwala, Sunny Sethi, Ila Badge
  • Patent number: 9827709
    Abstract: The present invention is directed to synthetic attachment discs made from adhesive nanofibers and/or microfibers that are capable of attaching long fibers to a wide variety of surfaces, and related methods for forming and using them. The synthetic attachment discs of the present invention use very little material relative to prior art systems, while producing a very strong attachment force. Experimental and theoretical evidence are provided to confirm the advantages of thousands of micron-size ‘staple-pins’ and their low peeling angles to enhance the adhesive forces required to peel the synthetic attachment discs. The present invention provides a unique strategy for designing new adhesives that use very little material for various biomedical and material science applications.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: November 28, 2017
    Assignee: The University of Akron
    Inventors: Ali Dhinojwala, Vasav Sahni, Dharamdeep Jain
  • Publication number: 20170210852
    Abstract: The present invention is directed to a novel group of amino acid-based poly(ester urea)s (PEUs) for use in biodegradable adhesive and related methods for their making and use. These novel amino acid-based PEUs have a wide variation in mechanical properties and degradation behavior that can be tuned by varying the amino acids and polyols used to form the polyester monomers that form the PEUs. Importantly, these novel PEUs have been shown to be non-toxic in vitro and in vivo and may be suitable to a wide variety of biomedical and other uses. In some embodiments, the adhesive properties of these degradable amino acid-based poly(ester urea) adhesives has been further improved by the incorporation of controlled amounts of catechol functional groups into the side chains of the PEU via post-polymerization functionalization chemistry.
    Type: Application
    Filed: July 21, 2015
    Publication date: July 27, 2017
    Applicant: THE UNIVERSITY OF AKRON
    Inventors: Matthew BECKER, Jinjun ZHOU, Adrian DEFANTE, Ali DHINOJWALA
  • Patent number: 9670060
    Abstract: This is provided a hydrophobic or superhydrophobic surface configuration and method of forming a hydrophobic or superhydrophobic material on a metallic substrate. The surface configuration comprises a metallic substrate having a carbon nanotube/carbon fibers configuration grown thereon, with the carbon nanotubes/carbon fibers configuration having a heirarchial structure formed to have a predetermined roughness in association with the surface. The method comprises providing a metallic substrate having a predetermined configuration, and growing a plurality of carbon nanotubes/fibers or other nanostructures formed into a predetermined architecture supported on the substrate.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: June 6, 2017
    Assignee: The University of Akron
    Inventors: Ali Dhinojwala, Sunny Sethi
  • Publication number: 20170081568
    Abstract: Provided is a pressure sensitive adhesive polymer comprising adhesive polymerscrosslinked with a crosslinker that includes a photoresponsive group. Also provided is a method for preparing a pressure sensitive adhesive polymer comprising: polymerizing an vinyl monomer and photoresponsive crosslinker with two acryl end groups.
    Type: Application
    Filed: May 15, 2015
    Publication date: March 23, 2017
    Inventors: Abraham Joy, Ali Dhinojwala, Kaushik Mishra
  • Patent number: 9562284
    Abstract: A method of implementing a carbon nanotube thermal interface material onto a heat sink that includes growing carbon nanotubes on said heat sink by chemical vapor deposition and compressing the carbon nanotubes onto metallic surfaces to increase a contact surface area between the carbon nanotubes and the metallic surfaces. The increase in the contact surface area is the area of the carbon nanotubes that is in contact with the metallic surfaces.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: February 7, 2017
    Assignee: The University of Akron
    Inventors: Ali Dhinojwala, Sunny Sethi
  • Patent number: 9453120
    Abstract: The invention is directed to carbon nanostructure composite systems which may be useful for various applications, including as dry adhesives, electronics and display technologies, or in a wide variety of other areas where organized nano structures may be formed and integrated into a flexible substrate. The present invention provides systems and methods wherein organized nanotube structures or other nanostructures are embedded within polymers or other flexible materials to provide a flexible skin-like material, with the properties and characteristics of the nanotubes or other nanostructures exploited for use in various applications. In one aspect, the invention is directed to a carbon nanotube/polymer composite material having a plurality of carbon nanotubes formed into a predetermined architecture, with each of the plurality of nanotubes having a desired width and length.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: September 27, 2016
    Assignees: The University of Akron, Rensselaer Polytechnic Institute
    Inventors: Pulickel M. Ajayan, Ali Dhinojwala
  • Publication number: 20150328831
    Abstract: The present invention is directed to synthetic attachment discs made from adhesive nanofibers and/or microfibers that are capable of attaching long fibers to a wide variety of surfaces, and related methods for forming and using them. The synthetic attachment discs of the present invention use very little material relative to prior art systems, while producing a very strong attachment force. Experimental and theoretical evidence are provided to confirm the advantages of thousands of micron-size ‘staple-pins’ and their low peeling angles to enhance the adhesive forces required to peel the synthetic attachment discs. The present invention provides a unique strategy for designing new adhesives that use very little material for various biomedical and material science applications.
    Type: Application
    Filed: December 23, 2013
    Publication date: November 19, 2015
    Applicant: THE UNIVERSITY OF AKRON
    Inventors: Ali DHINOJWALA, Vasav SAHNI, Dharamdeep JAIN
  • Patent number: 9184015
    Abstract: A method of fabricating a cathodic portion of a field emission display includes the steps of producing an array of substantially parallel carbon nanotubes attached at one end to a substantially planar substrate. Then, embedding the nanotubes in a polymer matrix that extends to a plane of attachment of the nanotubes to the planar substrate, wherein the polymer matrix allows an end of the nanotubes distal from the ends attached to the planar substrate, uncovered by the polymer matrix in order to allow electrical contact with each other and with an attached conductor. Next, detaching the array from the planar substrate, thus producing a surface having the formerly attached ends of the nanotubes substantially in a plane, and then attaching the conductor to the array of nanotube ends, uncovered by the polymer matrix and distal to the plane.
    Type: Grant
    Filed: September 20, 2010
    Date of Patent: November 10, 2015
    Assignee: The University of Akron
    Inventors: Ali Dhinojwala, Sunny Sethi
  • Patent number: 9095639
    Abstract: The invention is directed to carbon nanostructure composite systems which may be useful for various applications, including as dry adhesives, electronics and display technologies, or in a wide variety of other areas where organized nanostructures may be formed and integrated into a flexible substrate. The present invention provides systems and methods wherein organized nanotube structures or other nanostructures are embedded within polymers or other flexible materials to provide a flexible skin-like material, with the properties and characteristics of the nanotubes or other nanostructures exploited for use in various applications. In one aspect, the invention is directed to a carbon nanotube/polymer composite material having a plurality of carbon nanotubes formed into a predetermined architecture, with each of the plurality of nanotubes having a desired width and length.
    Type: Grant
    Filed: February 15, 2007
    Date of Patent: August 4, 2015
    Assignee: The University of Akron
    Inventors: Pulickel M. Ajayan, Ali Dhinojwala
  • Publication number: 20140302249
    Abstract: A method of preparing a fiber with periodically spaced beads includes the steps of: coating a base fiber with a settable coating; thereafter allowing the settable coating to form periodically spaced beads on the base fiber; and stabilizing the periodically spaced beads into periodically spaced beads thus creating a fiber with beads-on-a-string morphology.
    Type: Application
    Filed: August 31, 2012
    Publication date: October 9, 2014
    Applicant: THE UNIVERSITY OF AKRON
    Inventors: Ali Dhinojwala, Vasav Sahni, Disha Vinod Labhasetwar
  • Publication number: 20140213130
    Abstract: A method for creating a superhydrophobic coated nanoporous assembly includes the steps of: providing a nanoporous assembly formed of discrete and/or continuous structures that provide a morphology defining pores of less than 1 micron between neighboring discrete and continuous structures; bringing gaseous plasma precursors in the presence of the nanoporous assembly and in the presence of a plasma generator; employing the plasma generator to convert the gaseous plasma precursors to the plasma state; and permitting the plasma precursors to deposit as a coating on the nanoporous assembly through plasma polymerization techniques the deposition thereof preserving the porous structure of the nanoporous assembly, the deposited coating exhibiting a surface energy of less than 30 dynes/cm.
    Type: Application
    Filed: July 9, 2012
    Publication date: July 31, 2014
    Applicant: THE UNIVERSITY OF AKRON
    Inventors: Ali Dhinojwala, Sunny Sethi, Ila Badge