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: 20240079791Abstract: 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: ApplicationFiled: September 8, 2023Publication date: March 7, 2024Inventors: Ragip Pala, Jonathan Waldern, Efthymios Kallos, Milan Momcilo Popovich, George Palikaras
-
Publication number: 20220287582Abstract: 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: ApplicationFiled: January 4, 2022Publication date: September 15, 2022Inventors: 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: 11246502Abstract: 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: GrantFiled: January 17, 2017Date of Patent: February 15, 2022Assignee: 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: 10996385Abstract: 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: GrantFiled: October 25, 2018Date of Patent: May 4, 2021Assignee: Lamda Guard Technologies Ltd.Inventors: George Palikaras, Themos Kallos
-
Patent number: 10698143Abstract: 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: GrantFiled: October 10, 2012Date of Patent: June 30, 2020Assignee: LAMDA GUARD TECHNOLOGIES LTD.Inventors: George Palikaras, Themos Kallos
-
Patent number: 10485445Abstract: 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: GrantFiled: March 28, 2013Date of Patent: November 26, 2019Assignee: Medical Wireless Sensing LtdInventors: George Palikaras, Efthymios Kallos
-
Publication number: 20190146133Abstract: 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: ApplicationFiled: October 25, 2018Publication date: May 16, 2019Inventors: George Palikaras, Themos Kallos
-
Publication number: 20190021626Abstract: 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: ApplicationFiled: January 17, 2017Publication date: January 24, 2019Applicant: 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: 9890925Abstract: 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: GrantFiled: March 7, 2013Date of Patent: February 13, 2018Assignee: LAMDA GUARD TECHNOLOGIES LTDInventors: George Palikaras, Themos Kallos
-
Patent number: 9791724Abstract: 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: GrantFiled: March 20, 2014Date of Patent: October 17, 2017Assignee: Lamda Guard Technologies Ltd.Inventors: George Palikaras, Themos Kallos
-
Publication number: 20160093760Abstract: 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: ApplicationFiled: May 21, 2013Publication date: March 31, 2016Inventors: Efthymios Kallos, George Palikaras, Andrea Alu, Christos Argyropoulos
-
Publication number: 20160048043Abstract: 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: ApplicationFiled: March 20, 2014Publication date: February 18, 2016Inventors: George Palikaras, Themas Kallos
-
Publication number: 20150045663Abstract: 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: ApplicationFiled: March 28, 2013Publication date: February 12, 2015Inventor: George PALIKARAS
-
Publication number: 20150036350Abstract: 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: ApplicationFiled: March 7, 2013Publication date: February 5, 2015Applicant: Lamda Guard Technologies Ltd.Inventors: George PALIKARAS, Themos KALLOS
-
Publication number: 20140293467Abstract: 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: ApplicationFiled: October 10, 2012Publication date: October 2, 2014Inventors: George Palikaras, Themos Kallos