Patents by Inventor Ravi Shankar Meenakshisundaram

Ravi Shankar Meenakshisundaram 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: 20210331374
    Abstract: A method of ink-extrusion printing an object, including providing a mixture including liquid crystal monomers and photo-catalyzing or heating the mixture to produce a liquid crystal ink. The ink is in a nematic phase. The method includes extruding the ink through a print-head orifice moving along a print direction to form an extruded film of the object. The extruded film exhibits birefringence. Also disclosed are a liquid crystal ink. The ink includes a mixture including liquid crystal monomers. The mixture when at a target printing temperature is in a nematic phase. Also disclosed is ink-extrusion-printed object. The object includes an extrusion-printed film including a nematic liquid crystal elastomer, wherein the film exhibits birefringence along an extrusion axis of the film.
    Type: Application
    Filed: April 23, 2021
    Publication date: October 28, 2021
    Inventors: Taylor H. Ware, Cedric P. Ambulo, Mohand O. Saed, Jennifer M. Boothby, Julia J. Henricks, Ravi Shankar Meenakshisundaram
  • Publication number: 20210317370
    Abstract: An optically transparent actuator apparatus is provided that includes an optically transparent bi-stable member including an optically transparent liquid crystalline polymer layer. The bi-stable member is structured to move from a first state to a second state in response to a first stimulus and from the second state to the first state in response to a second stimulus. Also, a display apparatus includes a plate member and an actuator assembly coupled to the plate member. The actuator assembly includes a number of optically transparent liquid crystalline polymer layers, wherein each of the optically transparent liquid crystalline polymer layers is structured to move from a first state to a second state in response to a first stimulus.
    Type: Application
    Filed: May 5, 2021
    Publication date: October 14, 2021
    Applicant: UNIVERSITY OF PITTSBURGH-OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION
    Inventor: RAVI SHANKAR MEENAKSHISUNDARAM
  • Patent number: 11084982
    Abstract: An optically transparent actuator apparatus is provided that includes an optically transparent bi-stable member including an optically transparent liquid crystalline polymer layer. The bi-stable member is structured to move from a first state to a second state in response to a first stimulus and from the second state to the first state in response to a second stimulus. Also, a display apparatus includes a plate member and an actuator assembly coupled to the plate member. The actuator assembly includes a number of optically transparent liquid crystalline polymer layers, wherein each of the optically transparent liquid crystalline polymer layers is structured to move from a first state to a second state in response to a first stimulus.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: August 10, 2021
    Assignee: University of Pittsburgh-Of the Commonwealth System of Higher Education
    Inventor: Ravi Shankar Meenakshisundaram
  • Patent number: 11014285
    Abstract: A method of ink-extrusion printing an object, including providing a mixture including liquid crystal monomers and photo-catalyzing or heating the mixture to produce a liquid crystal ink. The ink is in a nematic phase. The method includes extruding the ink through a print-head orifice moving along a print direction to faun an extruded film of the object. The extruded film exhibits birefringence. Also disclosed are a liquid crystal ink. The ink includes a mixture including liquid crystal monomers. The mixture when at a target printing temperature is in a nematic phase. Also disclosed is ink-extrusion-printed object. The object includes an extrusion-printed film including a nematic liquid crystal elastomer, wherein the film exhibits birefringence along an extrusion axis of the film.
    Type: Grant
    Filed: August 17, 2018
    Date of Patent: May 25, 2021
    Assignees: Board of Regents, The University of Texas System, University of Pittsburgh
    Inventors: Taylor H. Ware, Cedric P. Ambulo, Mohand O. Saed, Jennifer M. Boothby, Julia J. Henricks, Ravi Shankar Meenakshisundaram
  • Publication number: 20190136133
    Abstract: An optically transparent actuator apparatus is provided that includes an optically transparent bi-stable member including an optically transparent liquid crystalline polymer layer. The bi-stable member is structured to move from a first state to a second state in response to a first stimulus and from the second state to the first state in response to a second stimulus. Also, a display apparatus includes a plate member and an actuator assembly coupled to the plate member. The actuator assembly includes a number of optically transparent liquid crystalline polymer layers, wherein each of the optically transparent liquid crystalline polymer layers is structured to move from a first state to a second state in response to a first stimulus.
    Type: Application
    Filed: June 9, 2017
    Publication date: May 9, 2019
    Applicant: UNIVERSITY OF PITTSBURGH-OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION
    Inventor: RAVI SHANKAR MEENAKSHISUNDARAM
  • Publication number: 20190077071
    Abstract: A method of ink-extrusion printing an object, including providing a mixture including liquid crystal monomers and photo-catalyzing or heating the mixture to produce a liquid crystal ink. The ink is in a nematic phase. The method includes extruding the ink through a print-head orifice moving along a print direction to faun an extruded film of the object. The extruded film exhibits birefringence. Also disclosed are a liquid crystal ink. The ink includes a mixture including liquid crystal monomers. The mixture when at a target printing temperature is in a nematic phase. Also disclosed is ink-extrusion-printed object. The object includes an extrusion-printed film including a nematic liquid crystal elastomer, wherein the film exhibits birefringence along an extrusion axis of the film.
    Type: Application
    Filed: August 17, 2018
    Publication date: March 14, 2019
    Inventors: Taylor H. Ware, Cedric P. Ambulo, Mohand O. Saed, Jennifer M. Boothby, Julia J. Henricks, Ravi Shankar Meenakshisundaram