Patents by Inventor George Palikaras

George Palikaras 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: 20240079791
    Abstract: There is provided an electromagnetic wave director comprising a substrate supporting a diffractive element formed from a two-dimensional array of subwavelength subcells deposited onto said substrate, said diffractive element operative to direct an electromagnetic wave signal generated by at least one electromagnetic wave transmitter to at least one electromagnetic receiver disposed within at least one coverage zone lying outside the line of sight of the transmitter, said diffractive element having metasurface prescription for modifying the amplitude and phase of incident electromagnetic wavefronts on each subwavelength subcell. There is also provided associated systems and methods.
    Type: Application
    Filed: September 8, 2023
    Publication date: March 7, 2024
    Inventors: Ragip Pala, Jonathan Waldern, Efthymios Kallos, Milan Momcilo Popovich, George Palikaras
  • Publication number: 20220287582
    Abstract: A novel medical imaging system that is based on radio-wave signals at microwave frequencies and has unique properties. The system can be used for various diagnostic applications such as breast cancer detection, brain stroke detection, and assessment of internal bleeding (trauma emergencies).
    Type: Application
    Filed: January 4, 2022
    Publication date: September 15, 2022
    Inventors: Helena CANO GARCIA, Nadine GEDDES, Ioannis GOUZOUASIS, Efthymios KALLOS, Panagiotis KOSMAS, George PALIKARAS, Ioannis SOTIRIOU, Anastasios GARETSOS, Georgios STRATAKOS, Michail GARGALAKOS, Constantinos KAKOYIANNIS, Irene KARANASIOU, Maria KOUTSOUPIDOU, Nikolaos UZUNOGLU
  • Patent number: 11246502
    Abstract: A novel medical imaging system that is based on radio-wave signals at microwave frequencies and has unique properties. The system can be used for various diagnostic applications such as breast cancer detection, brain stroke detection, and assessment of internal bleeding (trauma emergencies).
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: February 15, 2022
    Assignee: Medical Wireless Sensing Ltd.
    Inventors: Helena Cano Garcia, Nadine Geddes, Ioannis Gouzouasis, Efthymios Kallos, Panagiotis Kosmas, George Palikaras, Ioannis Sotiriou, Anastasios Garetsos, Georgios Stratakos, Michail Gargalakos, Constantinos Kakoyiannis, Irene Karanasiou, Maria Koutsoupidou, Nikolaos Uzunoglu
  • Patent number: 10996385
    Abstract: There is provided a filter for filtering electromagnetic radiation, wherein said filter is arranged to transmit electromagnetic radiation of a first predetermined wavelength and to block transmission of electromagnetic radiation of a second, different predetermined wavelength; said filter comprising a first metamaterial. Optionally, the metamaterial may be formed of a plurality of material elements wherein each material element is at least one-dimensional and the size of the material element along each dimension is no greater than the size of the second predetermined wavelength. The filter comprises a second metamaterial arranged to provide second filtering of electromagnetic radiation.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: May 4, 2021
    Assignee: Lamda Guard Technologies Ltd.
    Inventors: George Palikaras, Themos Kallos
  • Patent number: 10698143
    Abstract: There is provided a filter for filtering electromagnetic radiation, wherein said filter is arranged to transmit electromagnetic radiation of a first predetermined wavelength and to block transmission of electromagnetic radiation of a second, different predetermined wavelength; said filter comprising a first metamaterial. Optionally, the metamaterial may be formed of a plurality of material elements wherein each material element is at least one-dimensional and the size of the material element along each dimension is no greater than the size of the second predetermined wavelength. The filter comprises a second metamaterial arranged to provide second filtering of electromagnetic radiation.
    Type: Grant
    Filed: October 10, 2012
    Date of Patent: June 30, 2020
    Assignee: LAMDA GUARD TECHNOLOGIES LTD.
    Inventors: George Palikaras, Themos Kallos
  • Patent number: 10485445
    Abstract: There is provided a device arranged to couple electromagnetic-imaging radiation from a source medium into an electromagnetic-imaging target, the device comprising a first supporting component having a thickness no greater than a wavelength of the electromagnetic-imaging radiation. The first supporting component supports a planar array of first conducting elements, wherein each first conducting element has a first dimension no greater than a first wavelength of the electromagnetic-imaging radiation.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: November 26, 2019
    Assignee: Medical Wireless Sensing Ltd
    Inventors: George Palikaras, Efthymios Kallos
  • Publication number: 20190146133
    Abstract: There is provided a filter for filtering electromagnetic radiation, wherein said filter is arranged to transmit electromagnetic radiation of a first predetermined wavelength and to block transmission of electromagnetic radiation of a second, different predetermined wavelength; said filter comprising a first metamaterial. Optionally, the metamaterial may be formed of a plurality of material elements wherein each material element is at least one-dimensional and the size of the material element along each dimension is no greater than the size of the second predetermined wavelength. The filter comprises a second metamaterial arranged to provide second filtering of electromagnetic radiation.
    Type: Application
    Filed: October 25, 2018
    Publication date: May 16, 2019
    Inventors: George Palikaras, Themos Kallos
  • Publication number: 20190021626
    Abstract: A novel medical imaging system that is based on radio-wave signals at microwave frequencies and has unique properties. The system can be used for various diagnostic applications such as breast cancer detection, brain stroke detection, and assessment of internal bleeding (trauma emergencies).
    Type: Application
    Filed: January 17, 2017
    Publication date: January 24, 2019
    Applicant: Medical Wireless Sensing Ltd.
    Inventors: Helena CANO GARCIA, Nadine GEDDES, Ioannis GOUZOUASIS, Efthymios KALLOS, Panagiotis KOSMAS, George PALIKARAS, Ioannis SOTIRIOU, Anastasios GARETSOS, Georgios STRATAKOS, Michail GARGALAKOS, Constantinos KAKOYIANNIS, Irene KARANASIOU, Maria KOUTSOUPIDOU, Nikolaos UZUNOGLU
  • Patent number: 9890925
    Abstract: There is provided a device arranged to couple with an electromagnetic source. The device comprises an optical metamaterial arranged to increase the intensity of radiation at a predetermined optical wavelength. The optical metamaterial has a periodic reflective component having a dimension no greater than the predetermined wavelength.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: February 13, 2018
    Assignee: LAMDA GUARD TECHNOLOGIES LTD
    Inventors: George Palikaras, Themos Kallos
  • Patent number: 9791724
    Abstract: There is provided an optical diode comprising a circular polarisation splitter, a first circular polariser and a second circular polariser. The circular polarisation splitter is arranged to receive at least partially unpolarised light and output right-handed circular polarised light along a first optical path and left-handed circular polarised light along a second optical path. The first circular polariser is arranged on the first optical path and transmits right-handed circular polarised light and reflects left-handed circular polarised light. The second circular polariser is arranged on the second optical path and transmits left-handed circular polarised light and reflects right-handed circular polarised light.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: October 17, 2017
    Assignee: Lamda Guard Technologies Ltd.
    Inventors: George Palikaras, Themos Kallos
  • Publication number: 20160093760
    Abstract: There is provided an optical waveguide comprising: a periodic component comprising a plurality of material elements (101) arranged to receive radiation; and a plurality of tapered waveguides (103), wherein each material element is respectively coupled to a tapered waveguide which tapers outwardly from the material element. The device works as a broadband absorber.
    Type: Application
    Filed: May 21, 2013
    Publication date: March 31, 2016
    Inventors: Efthymios Kallos, George Palikaras, Andrea Alu, Christos Argyropoulos
  • Publication number: 20160048043
    Abstract: There is provided an optical diode comprising a circular polarisation splitter, a first circular polariser and a second circular polariser. The circular polarisation splitter is arranged to receive at least partially unpolarised light and output right-handed circular polarised light along a first optical path and left-handed circular polarised light along a second optical path. The first circular polariser is arranged on the first optical path and transmits right-handed circular polarised light and reflects left-handed circular polarised light. The second circular polariser is arranged on the second optical path and transmits left-handed circular polarised light and reflects right-handed circular polarised light.
    Type: Application
    Filed: March 20, 2014
    Publication date: February 18, 2016
    Inventors: George Palikaras, Themas Kallos
  • Publication number: 20150045663
    Abstract: There is provided a device arranged to couple electromagnetic-imaging radiation from a source medium into an electromagnetic-imaging target, the device comprising a first supporting component having a thickness no greater than a wavelength of the electromagnetic-imaging radiation. The first supporting component supports a planar array of first conducting elements, wherein each first conducting element has a first dimension no greater than a first wavelength of the electromagnetic-imaging radiation.
    Type: Application
    Filed: March 28, 2013
    Publication date: February 12, 2015
    Inventor: George PALIKARAS
  • Publication number: 20150036350
    Abstract: There is provided a device arranged to couple with an electromagnetic source. The device comprises an optical metamaterial arranged to increase the intensity of radiation at a predetermined optical wavelength. The optical metamaterial has a periodic reflective component having a dimension no greater than the predetermined wavelength.
    Type: Application
    Filed: March 7, 2013
    Publication date: February 5, 2015
    Applicant: Lamda Guard Technologies Ltd.
    Inventors: George PALIKARAS, Themos KALLOS
  • Publication number: 20140293467
    Abstract: There is provided a filter for filtering electromagnetic radiation, wherein said filter is arranged to transmit electromagnetic radiation of a first predetermined wavelength and to block transmission of electromagnetic radiation of a second, different predetermined wavelength; said filter comprising a first metamaterial. Optionally, the metamaterial may be formed of a plurality of material elements wherein each material element is at least one-dimensional and the size of the material element along each dimension is no greater than the size of the second predetermined wavelength. The filter comprises a second metamaterial arranged to provide second filtering of electromagnetic radiation.
    Type: Application
    Filed: October 10, 2012
    Publication date: October 2, 2014
    Inventors: George Palikaras, Themos Kallos