Patents by Inventor Gunhan DUNDAR

Gunhan DUNDAR 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: 20210393126
    Abstract: A contact lens embedded sensor comprises resonator rings, characterized in that said resonator rings result from arrangements of broadside-coupled split-ring resonator, edge-coupled split-ring resonator, non-bianisotropic split-ring resonator and spiral resonator based structures with the use of dielectric, biocompatible substrate layers. The system also includes an antenna coupled with the sensor, and an electrical readout circuitry collecting and processing measurements in the change of resonant character caused by intraocular pressure (IOP) perturbing the geometry of the human eyeball said contact lens is worn thereon.
    Type: Application
    Filed: August 23, 2018
    Publication date: December 23, 2021
    Applicant: Glakolens Biyomedikal Biyoteknoloji Tic. VE SAN. A.S.
    Inventors: Günhan Dündar, Arda Deniz Yalçinkaya, Hamdi Torun, Onur Ates, Ümmühan Aybüke Calikoglu, Özgür Kaya, Halil Kerim Yildirim
  • Patent number: 11079339
    Abstract: The present invention relates to a biosensor (1) which enables the concentration of a desired molecule inside a liquid in the medium, and essentially comprises at least one metallic plate (2) which functions as a ground plate, and which is preferably manufactured from aluminum, at least one dielectric substrate (3) which is located on top of the metallic plate (2), at least one split-ring resonator (4) which is realized on top of the dielectric substrate (3), and which is coated with a dielectric layer, at least two symmetrical antennas (5) which are realized on the same plane with the split-ring resonator (4) on the substrate (3), at least two ports (6) where a network analyzer is connected with the antennas (5) via SMA (SubMiniature Version A) connectors.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: August 3, 2021
    Assignee: BOGAZICI UNIVERSITESI
    Inventors: Hamdi Torun, Arda Deniz Yalcinkaya, Gunhan Dundar
  • Publication number: 20210231587
    Abstract: The present invention relates to a biosensor (1) which enables the concentration of a desired molecule inside a liquid in the medium, and essentially comprises at least one metallic plate (2) which functions as a ground plate, and which is preferably manufactured from aluminum, at least one dielectric substrate (3) which is located on top of the metallic plate (2), at least one split-ring resonator (4) which is realized on top of the dielectric substrate (3), and which is coated with a dielectric layer, at least two symmetrical antennas (5) which are realized on the same plane with the split-ring resonator (4) on the substrate (3), at least two ports (6) where a network analyzer is connected with the antennas (5) via SMA (SubMiniature Version A) connectors.
    Type: Application
    Filed: June 5, 2018
    Publication date: July 29, 2021
    Applicant: BOGAZICI UNIVERSITESI
    Inventors: Hamdi TORUN, Arda Deniz YALCINKAYA, Gunhan DUNDAR
  • Publication number: 20190387970
    Abstract: A biomedical pressure sensing system comprising a contact lens; a flexible resonator embedded in the contact lens; and a measuring means for transmitting and receiving signals and measuring differences between the transmitted signal and the received signal. The purpose of this invention is to provide a sensor which is electrically passive, wireless and low cost to measure intraocular pressure.
    Type: Application
    Filed: September 6, 2019
    Publication date: December 26, 2019
    Applicant: Bogazici Universitesi
    Inventors: Arda D. Yalçinkaya, Günhan Dündar, Hamdi Torun
  • Patent number: 10492683
    Abstract: The invention relates a split-ring resonator-based strain sensor on flexible substrates for glaucoma detection. The purpose of this invention is to provide a sensor which is electrically passive, wireless and low cost to measure intraocular pressure. It measures intraocular pressure by placing a microwave resonator on top of contact lenses. The sensor that is a metallic ring can be placed on a contact lens using standard methods of metal deposition (sputtering, evaporation, etc.) using a shadow mask. The sensor on the lens does not require any electrical signal to operate and are interrogated by external antennas that can be located away from the contact lens. This is very advantageous to define flexible strain sensors that are required for applications as glaucoma detection.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: December 3, 2019
    Assignee: BOGAZICI UNIVERSITESI
    Inventors: Arda D. Yalçinkaya, Günhan Dündar, Hamdi Torun
  • Publication number: 20180284034
    Abstract: The present invention relates to a biosensor (1) which enables the concentration of a desired molecule inside a liquid in the medium, and essentially comprises at least one metallic plate (2) which functions as a ground plate, and which is preferably manufactured from aluminum, at least one dielectric substrate (3) which is located on top of the metallic plate (2), at least one split-ring resonator (4) which is realized on top of the dielectric substrate (3), and which is coated with a dielectric layer, at least two symmetrical antennas (5) which are realized on the same plane with the split-ring resonator (4) on the substrate (3), at least two ports (6) where a network analyzer is connected with the antennas (5) via SMA (SubMiniature Version A) connectors.
    Type: Application
    Filed: June 5, 2018
    Publication date: October 4, 2018
    Applicant: BOGAZICI UNIVERSITESI
    Inventors: Hamdi TORUN, Arda Deniz YALCINKAYA, Gunhan DUNDAR
  • Patent number: 10067075
    Abstract: The present invention relates to a biosensor (1) which enables the concentration of a desired molecule inside a liquid in the medium, and essentially comprises at least one metallic plate (2) which functions as a ground plate, and which is preferably manufactured from aluminum, at least one dielectric substrate (3) which is located on top of the metallic plate (2), at least one split-ring resonator (4) which is realized on top of the dielectric substrate (3), and which is coated with a dielectric layer, at least two symmetrical antennas (5) which are realized on the same plane with the split-ring resonator (4) on the substrate (3), at least two ports (6) where a network analyzer is connected with the antennas (5) via SMA (SubMiniature Version A) connectors.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: September 4, 2018
    Assignee: BOGAZICI UNIVERSITESI
    Inventors: Hamdi Torun, Arda Deniz Yalcinkaya, Gunhan Dundar
  • Publication number: 20180042479
    Abstract: The invention relates a split-ring resonator-based strain sensor on flexible substrates for glaucoma detection. The purpose of this invention is to provide a sensor which is electrically passive, wireless and low cost to measure intraocular pressure. It measures intraocular pressure by placing a microwave resonator on top of contact lenses. The sensor that is a metallic ring can be placed on a contact lens using standard methods of metal deposition (sputtering, evaporation, etc.) using a shadow mask. The sensor on the lens does not require any electrical signal to operate and are interrogated by external antennas that can be located away from the contact lens. This is very advantageous to define flexible strain sensors that are required for applications as glaucoma detection.
    Type: Application
    Filed: August 11, 2017
    Publication date: February 15, 2018
    Applicant: Bogazici Universitesi
    Inventors: Arda D. Yalçinkaya, Günhan Dündar, Hamdi Torun
  • Publication number: 20170292920
    Abstract: The present invention relates to a biosensor (1) which enables the concentration of a desired molecule inside a liquid in the medium, and essentially comprises at least one metallic plate (2) which functions as a ground plate, and which is preferably manufactured from aluminum, at least one dielectric substrate (3) which is located on top of the metallic plate (2), at least one split-ring resonator (4) which is realized on top of the dielectric substrate (3), and which is coated with a dielectric layer, at least two symmetrical antennas (5) which are realized on the same plane with the split-ring resonator (4) on the substrate (3), at least two ports (6) where a network analyzer is connected with the antennas (5) via SMA (SubMiniature Version A) connectors.
    Type: Application
    Filed: September 14, 2015
    Publication date: October 12, 2017
    Applicant: BOGAZICI UNIVERSITESI
    Inventors: Hamdi TORUN, Arda Deniz YALCINKAYA, Gunhan DUNDAR