Patents by Inventor Hilmi Volkan Demir
Hilmi Volkan Demir 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).
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Publication number: 20230033897Abstract: The present invention relates to a method (100) for widening color space with a much reduced thickness compared to film applications, by coating lower and upper surfaces of a light waveguide that is used within displays such as tablet and mobile phone with color enriching materials.Type: ApplicationFiled: December 28, 2020Publication date: February 2, 2023Applicant: BILKENT UNIVERSITESI (UNAM) ULUSAL NANOTEKNOLOJI ARASTIRMA MERKEZIInventors: Hilmi Volkan DEMIR, Evren MUTLUGUN
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Publication number: 20230034537Abstract: The present invention relates to a conversion apparatus (1) for converting an image output on screens from a visible wavelength range into an infrared wavelength range, and a screen (A) comprising thereof.Type: ApplicationFiled: December 22, 2020Publication date: February 2, 2023Applicant: BILKENT UNIVERSITESI (UNAM) ULUSAL NANOTEKNOLOJI ARASTIRMA MERKEZIInventors: Hilmi Volkan DEMIR, Emre UNAL
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Publication number: 20230004042Abstract: The present invention relates to a barrier (1) which provides heat insulation by being contacted with displays of liquid crystal display (LCD) type.Type: ApplicationFiled: December 11, 2020Publication date: January 5, 2023Applicant: BILKENT UNIVERSITESI (UNAM) ULUSAL NANOTEKNOLOJI ARASTIRMA MERKEZIInventors: Hilmi Volkan DEMIR, Emre UNAL
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Publication number: 20210028332Abstract: Various embodiments may relate to an optical device. The optical device may include a radiation collimator configured to generate a directed light beam based on omni-directional light emission. The optical device may also include one or more optical elements configured to change a parameter of the directed light beam. The radiation collimator comprises a first reflector, a second reflector and a spacer between the first reflector and the second reflector. The first reflector, the second reflector and the spacer form a resonant cavity.Type: ApplicationFiled: December 20, 2018Publication date: January 28, 2021Inventors: Zhengtong Liu, Yuriy Akimov, Song Sun, Egor Khaidarov, Ramon Paniagua Dominguez, Arseniy Kuznetsov, Hilmi Volkan Demir
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Patent number: 10840051Abstract: The present invention generally relates to an extraction structure for a UV lighting element. The present invention also relates to a UV lamp comprising such an extraction structure onto a substrate. The extraction structure comprises a plurality of nanostructures for anti-reflecting purposes. The nanostructures are grown on the top surface of at least one of the first and second side of the substrate.Type: GrantFiled: September 19, 2016Date of Patent: November 17, 2020Assignees: Lightlab Sweden AB, Nanyang Technological UniversityInventors: Jonas Tirén, Hilmi Volkan Demir
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Patent number: 10824011Abstract: A photoluminescent polarizer including: a base having a first surface, a second surface opposite to the first surface, and a plurality of grid elements disposed on the first surface; wherein a grid element includes a first lateral face, a second lateral face, and at least one photoluminescent unit stack disposed on at least one of the first lateral face and the second lateral face, wherein the first lateral face is angled away from a line perpendicular to the first surface of the base and the second lateral face angled toward the first lateral face and away from the line, wherein the photoluminescent unit stack is disposed on at least one of the first lateral face and/or to the second lateral face, wherein the photoluminescent unit stack comprises a light emitting film and a metal film, the metal film disposed on a surface of the light emitting film.Type: GrantFiled: January 4, 2018Date of Patent: November 3, 2020Assignees: SAMSUNG ELECTRONICS CO., LTD., BILKENT UNIVERSITYInventors: Shin Ae Jun, Hilmi Volkan Demir, Eun Joo Jang, Burak Guzelturk, Kiyanc Gungor, Onur Erdem
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Patent number: 10734180Abstract: The present disclosure generally relates to field emission cathode structure for a field emission arrangement, specifically adapted for enhance reliability and prolong the lifetime of the field emission arrangement by arranging a getter element underneath a gas permeable portion of the field emission cathode structure. The present disclosure also relates to a field emission lighting arrangement comprising such a field emission cathode structure and to a field emission lighting system.Type: GrantFiled: June 20, 2018Date of Patent: August 4, 2020Assignees: Lightlab Sweden AB, Nanyang Technological UniversityInventors: Jonas Tirén, Patrik Hollman, Hilmi Volkan Demir, Vijay Kumar Sharma, Swee Tiam Tan
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Patent number: 10728966Abstract: The present invention generally relates to a method for operating a plurality of field emission light sources, specifically for performing a testing procedure in relation to a plurality of field emission light sources manufactured in a chip based fashion. The invention also relates to a corresponding testing system.Type: GrantFiled: February 8, 2018Date of Patent: July 28, 2020Assignees: Lightlab Sweden AB, Nanyang Technological UniversityInventors: Jonas Tirén, Hilmi Volkan Demir, Vijay Kumar Sharma, Swee Tiam Tan
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Publication number: 20200236753Abstract: The present invention generally relates to a method for operating a plurality of field emission light sources, specifically for performing a testing procedure in relation to a plurality of field emission light sources manufactured in a chip based fashion. The invention also relates to a corresponding testing system.Type: ApplicationFiled: February 8, 2018Publication date: July 23, 2020Applicants: Lightlab Sweden AB, Nanyang Technological UniversityInventors: Jonas TIRÉN, Hilmi Volkan DEMIR, Vijay Kumar SHARMA, Swee Tiam TAN
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Publication number: 20200161071Abstract: The present disclosure generally relates to field emission cathode structure for a field emission arrangement, specifically adapted for enhance reliability and prolong the lifetime of the field emission arrangement by arranging a getter element underneath a gas permeable portion of the field emission cathode structure. The present disclosure also relates to a field emission lighting arrangement comprising such a field emission cathode structure and to a field emission lighting system.Type: ApplicationFiled: June 20, 2018Publication date: May 21, 2020Applicants: Lightlab Sweden AB, Nanyang Technological UniversityInventors: Jonas TIRÉN, Patrik HOLLMAN, Hilmi Volkan DEMIR, Vijay Kumar SHARMA, Swee Tiam TAN
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Patent number: 10641664Abstract: A monitoring method and system include an antenna disposed spaced from a structural member (SM), which itself can be the target object or attachable to a target object, without using any in-dwelling strain sensor. The antenna is arranged to not touch the SM in at least the no load condition. As the target object undergoes displacement and/or deformation, the SM undergoes displacement and/or deformation. The SM is juxtaposed, partially contained with, or fully contained within a magnetic or electromagnetic field and electromagnetically coupled to the emitting antenna. Characteristics of the electromagnetic field coupling between the antenna and the SM shift over time due to the displacement and/or deformation applied to the SM. The shift in the characteristics of the electromagnetic field coupling between the antenna and the SM over time can be used to determine the temporal change in deformation and/or displacement of the SM over time to enable diagnosis of the target structural object being monitored.Type: GrantFiled: January 30, 2019Date of Patent: May 5, 2020Assignee: COLORADO STATE UNIVERSITY RESEARCH FOUNDATIONInventors: Christian M. Puttlitz, Hilmi Volkan Demir, Kevin M. Labus, Kirk C. McGilvray, Emre Unal
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Patent number: 10585311Abstract: A display device comprising a light source configured to output light of a first wavelength. The display device has a plurality of display elements comprising a first display element and a second display element. A first photoluminescent material associated with the first display element is located at a first side of a first substrate; and a second photoluminescent material associated with the second display element is located at a second side of the first substrate.Type: GrantFiled: February 21, 2019Date of Patent: March 10, 2020Assignees: Vestel Elektronik Sanayi ve Ticaret A.S.Inventors: Hilmi Volkan Demir, Emre Ünal, Özgün Akyüz, Sedat Şengül, Kivanç Karsli, Devrim Köseo{hacek over (g)}lu
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Publication number: 20190258116Abstract: A display device comprising a light source configured to output light of a first wavelength. The display device has a plurality of display elements comprising a first display element and a second display element. A first photoluminescent material associated with the first display element is located at a first side of a first substrate; and a second photoluminescent material associated with the second display element is located at a second side of the first substrate.Type: ApplicationFiled: February 21, 2019Publication date: August 22, 2019Inventors: Hilmi Volkan DEMIR, Emre ÜNAL, Özgün AKYÜZ, Sedat SENGÜL, Kivanç KARSLI, Devrim KÖSEOGLU
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Patent number: 10381514Abstract: An optical element includes a plurality of nanowires disposed in the form of an array and a light emitting material disposed on the nanowires, where the nanowires are longitudinally aligned in the array to linearly polarize at least a portion of light emitted from the light emitting material, and an electronic device includes the optical element.Type: GrantFiled: May 16, 2018Date of Patent: August 13, 2019Assignees: SAMSUNG ELECTRONICS CO., LTD., BILKENT UNIVERSITYInventors: Shin Ae Jun, Hilmi Volkan Demir, Eun Joo Jang, Burak Guzelturk, Can Uran, Talha Erdem, Kivanc Gungor
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Patent number: 10325770Abstract: The present invention generally relates to a field emission light source and specifically to a miniaturized field emission light source that is possible to manufacture in large volumes at low cost using the concept of wafer level manufacturing, i.e., a similar approach as used by integrated circuits (IC) and microelectromechanical systems (MEMS). The invention also relates to a lighting arrangement comprising at least one field emission light source.Type: GrantFiled: December 14, 2015Date of Patent: June 18, 2019Assignees: Lightlab Sweden AB, Nanyang Technological UniversityInventors: Jonas Tirén, Hilmi Volkan Demir
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Publication number: 20190162606Abstract: A monitoring method and system include an antenna disposed spaced from a structural member (SM), which itself can be the target object or attachable to a target object, without using any in-dwelling strain sensor. The antenna is arranged to not touch the SM in at least the no load condition. As the target object undergoes displacement and/or deformation, the SM undergoes displacement and/or deformation. The SM is juxtaposed, partially contained with, or fully contained within a magnetic or electromagnetic field and electromagnetically coupled to the emitting antenna. Characteristics of the electromagnetic field coupling between the antenna and the SM shift over time due to the displacement and/or deformation applied to the SM. The shift in the characteristics of the electromagnetic field coupling between the antenna and the SM over time can be used to determine the temporal change in deformation and/or displacement of the SM over time to enable diagnosis of the target structural object being monitored.Type: ApplicationFiled: January 30, 2019Publication date: May 30, 2019Inventors: Christian M. PUTTLITZ, Hilmi Volkan DEMIR, Kevin M. LABUS, Kirk C. MCGILVRAY, Emre UNAL
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Patent number: 10274557Abstract: Embodiments of the present invention address the problems with previously known MRI enhancement resonators. The embodiments provide capacitances that are sufficiently large to result in resonance frequencies that are sufficiently low for medical MRI applications in devices that are sufficiently small for implantation into the body. Further, the capacitance and resonance frequency of the MRI enhancement resonator may be easily adjusted to particular desired values by selecting corresponding thin-film dielectrics, or thicknesses of such thin-film dielectrics. Moreover, the design and geometry of the embodiments provide MRI enhancement resonators with high Q-factors. The construction and material of such MRI enhancement resonators also yield flexible and biocompatible devices that are appropriate for applications involving implantation into the body.Type: GrantFiled: March 14, 2014Date of Patent: April 30, 2019Inventor: Hilmi Volkan Demir
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Patent number: 10236466Abstract: According to one embodiment, an organic light emitting device is described including a first light emitting unit, a second light emitting unit and a charge generation layer wherein the second light emitting unit is stacked over the first light emitting unit and is connected to the first light emitting unit by means of the charge generation layer and wherein the charge generation layer includes an electron transport layer, a transition metal oxide layer arranged over the electron transport layer and a diffusion suppressing layer arranged between the electron transport layer and the transition metal oxide layer to separate the electron transport layer from the transition metal oxide layer.Type: GrantFiled: November 13, 2015Date of Patent: March 19, 2019Assignee: NANYANG TECHNOLOGICAL UNIVERSITYInventors: Xiaowei Sun, Hilmi Volkan Demir, Swee Tiam Tan, Yongbiao Zhao
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Patent number: 10213154Abstract: A strain sensor device having a biological substrate composed of a standalone bone graft or an isolated piece of bone that can be incorporated directly into, or attached to another piece of bone that is then implantable, in a biological subject, and a method thereof. The strain sensor device can includes a strain sensing circuit, which is composed of at least a first dielectric layer and a first conductive layer, that functions as a strain gauge. The first dielectric layer can be composed of dielectric material disposed over the biological substrate. The first conductive layer, which has a pattern, can be disposed over the first dielectric material. A bonding interface is disposed between the biological substrate and the first dielectric layer. The bonding interface can be composed of an underlayer of polydimethylsiloxane and a first interface layer. The underlayer can be disposed on the bone graft substrate.Type: GrantFiled: March 12, 2015Date of Patent: February 26, 2019Assignee: COLORADO STATE UNIVERSITY RESEARCH FOUNDATIONInventor: Hilmi Volkan Demir
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Publication number: 20180317842Abstract: This invention is related to a cable system (1) having a sensor, integrated onto the implant, which is attached to the femur bone and which envelopes the femur bone, enabling to measure the force applied on the femur bone by implants providing the required force, and which also carries out the enveloping force that is required in order for the implant to be used efficiently.Type: ApplicationFiled: October 24, 2016Publication date: November 8, 2018Inventors: Tolga Tolunay, Teyfik Demir, Hilmi Volkan Demir