Patents by Inventor Nathan Cohen

Nathan Cohen 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).

  • Patent number: 10788272
    Abstract: Systems according to the present disclosure provide one or more surfaces that function as heat or power radiating surfaces for which at least a portion of the radiating surface includes or is composed of “fractal cells” placed sufficiently closed close together to one another so that a surface (plasmonic) wave causes near replication of current present in one fractal cell in an adjacent fractal cell. A fractal of such a fractal cell can be of any suitable fractal shape and may have two or more iterations. The fractal cells may lie on a flat or curved sheet or layer and be composed in layers for wide bandwidth or multibandwidth transmission. The area of a surface and its number of fractals determines the gain relative to a single fractal cell. The boundary edges of the surface may be terminated resistively so as to not degrade the cell performance at the edges.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: September 29, 2020
    Assignee: Fractal Antenna Systems, Inc.
    Inventor: Nathan Cohen
  • Publication number: 20200261148
    Abstract: Techniques are disclosed, including methods and systems/apparatus, that can be used to treat cancerous tissue by exploiting the fact that such tissues have vascular branching with fractal descriptions and fractal dimensions, which are different from those found in normal soft tissue vascular branching. Such fractal branching of diseased tissue can produce resonances, or preferential energy absorption, when irradiated by either ultrasound and/or radio frequencies of EM energy; these resonances are not shared by the vascularization in normal soft tissue. Accordingly, one or more specific arrangements of multiband radiation (e.g., RF and/or ultrasonic) used to irradiate such diseased tissue will cause heating and possibly localized necropsy of tumor blood vessels, with little or minimal damage to surrounding healthy tissue. Embodiments can utilize ablation devices in conjunction with RF and/or ultrasonic sources.
    Type: Application
    Filed: May 5, 2020
    Publication date: August 20, 2020
    Inventors: Nathan Cohen, Alexander J. Shelman-Cohen
  • Patent number: 10740578
    Abstract: Plasmonic-surface antenna systems are described in which resonators, or cells, are closely arranged but do not touch. At least a portion of a radiating surface includes a plurality of cells (operative as resonators) placed very close together to one so that a surface (plasmonic) wave causes near replication of the current of one cell in an adjacent cell. Cells with one or more fractal shapes may be used as a fractal plasmonic surface (FPS). Systems and/or methods are described of using plasmonic surfaces or fractal plasmonic surfaces for radiofrequency identification (RFID). A PS or FPS may act as an intermediary array of antennas, which can serve to connect an RFID reader with one or more RFID tags. Structures including cages are described that can include one or more surfaces that are each an FPS. Methods of power transfer are described.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: August 11, 2020
    Assignee: Fractal Antenna Systems, Inc.
    Inventor: Nathan Cohen
  • Patent number: 10727603
    Abstract: Arrangement of resonators in an aperiodic configurations are described, which can be used for electromagnetic cloaking of objects. The overall assembly of resonators, as structures, do not all repeat periodically and at least some of the resonators are spaced such that their phase centers are separated by more than a wavelength. The arrangements can include resonators of several different sizes and/or geometries arranged so that each size or geometry corresponds to a moderate or high “Q” response that resonates within a specific frequency range, and that arrangement within that specific grouping of akin elements is periodic in the overall structure. The relative spacing and arrangement of groupings can be defined by self similarity and origin symmetry. Fractal based scatters are described. Further described are bondary condition layer structures that can activate and deactive cloaking/lensing structures.
    Type: Grant
    Filed: May 16, 2016
    Date of Patent: July 28, 2020
    Assignee: Fractal Antenna Systems, Inc.
    Inventors: Nathan Cohen, Obinna Okoro, Philip Salkind
  • Publication number: 20200212587
    Abstract: Metamaterials are described which can be employed with satellites, e.g., small sats, to increase the observability of such satellites. Any type of suitable metamaterial can be used. In exemplary embodiments fractal-based patterns or structures may be used.
    Type: Application
    Filed: January 2, 2020
    Publication date: July 2, 2020
    Inventor: Nathan Cohen
  • Patent number: 10639096
    Abstract: Techniques are disclosed, including methods and systems/apparatus, that can be used to treat cancerous tissue by exploiting the fact that such tissues have vascular branching with fractal descriptions and fractal dimensions, which are different from those found in normal soft tissue vascular branching. Such fractal branching of diseased tissue can produce resonances, or preferential energy absorption, when irradiated by either ultrasound and/or radio frequencies of EM energy; these resonances are not shared by the vascularization in normal soft tissue. Accordingly, one or more specific arrangements of multiband radiation (e.g., RF and/or ultrasonic) used to irradiate such diseased tissue will cause heating and possibly localized necropsy of tumor blood vessels, with little or minimal damage to surrounding healthy tissue. Embodiments can utilize ablation devices in conjunction with RF and/or ultrasonic sources.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: May 5, 2020
    Inventors: Nathan Cohen, Alexander Shelman-Cohen
  • Patent number: 10615491
    Abstract: Antennas, antenna systems, and communications devices are described that provide an antenna utilizing a fractal and/or self-similar conductive element that is novel and inventive in that its small in size and exhibits multiple-band or wideband frequency coverage which allows a miniature communications device incorporating the antenna to operate (e.g., function) with wide-band capabilities in close-proximity to a user's body and in form factor suitable for wearing by the user. As noted above, previous size and performance limitations of prior art antennas/devices were poor and made those devices either of limited utility or inoperable.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: April 7, 2020
    Assignee: Fractal Antenna Systems, Inc.
    Inventor: Nathan Cohen
  • Publication number: 20200106189
    Abstract: Aspect of the present disclosure are directed to methods and apparatus producing enhanced radiation characteristics, e.g., wideband behavior, in or for antennas and related components by providing concentric sleeves, with air or dielectric material as a spacer, where the sleeves include one or more conductive layers, at least a portion of which includes fractal resonators closely spaced, in terms of wavelength. A further aspect of the present disclosure is directed to surfaces that include dual-use or multiple-use apertures. Such aperture engine surfaces can include a first layer of antenna arrays, a second layer including a metal-fractal backplane player, and a third layer including solar cells for solar cell or solar oriented power collection. Fractal metamaterial ribbons with multiple closely-packed fractal resonators are also disclosed.
    Type: Application
    Filed: November 19, 2019
    Publication date: April 2, 2020
    Inventor: Nathan Cohen
  • Publication number: 20200106186
    Abstract: Vivaldi tapered slot and Vivaldi horn antennas that feature or include fractal plasmonic surfaces (“FPS”) are described. Vivaldi slot antennas are described which include a conductive surface defining a tapered slot, with the conductive surface including a plurality of fractal resonators which form or constitute a fractal plasmonic surface (FPS). In some embodiments the fractal resonators can be defined by slots. In some embodiments the fractal resonators can include self-complementary features. In exemplary embodiments, two Vivaldi horn antennas may be used for a Vivaldi horn antenna. The two Vivaldi FPS antennas can be arranged in a crossed or cross configuration such that the two antennas are essentially perpendicular to one another and are therefore able to receive and transmit two orthogonal polarizations of radiation. The two antennas can be fed by separate respective feed lines. The two antennas can be mounted inside of a horn or casing.
    Type: Application
    Filed: December 3, 2019
    Publication date: April 2, 2020
    Inventors: Nathan Cohen, Ryan Thistle, Daniel Earle, Philip Salkind, A.J. Shelman-Cohen
  • Patent number: 10594038
    Abstract: Cage antennas and related components are described. Such cage antennas include a shortened antennal element, such as a monopole (e.g., of approximately ?-wave height of a desired operational wavelength), which can be placed on a shortened ground plane (e.g., roughly quarter-wave size). A cage-like ensemble (e.g., a cage) can then be placed on top of but not touching the antenna element. The cage structure can have a fractal-based, folded, and/or pleated structure, among others. This cage structure can be produced either through a variety of means including but not limited to 3-D printing with either conductive materials or inductively coded materials.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: March 17, 2020
    Assignee: Fractal Antenna Systems, Inc.
    Inventors: Nathan Cohen, Daniel Earle, Justin Mitchell
  • Publication number: 20200059003
    Abstract: Arrangement of resonators in an aperiodic configurations are described, which can be used for electromagnetic cloaking of objects. The overall assembly of resonators, as structures, do not all repeat periodically and at least some of the resonators are spaced such that their phase centers are separated by more than a wavelength. The arrangements can include resonators of several different sizes and/or geometries arranged so that each size or geometry corresponds to a moderate or high “Q” response that resonates within a specific frequency range, and that arrangement within that specific grouping of akin elements is periodic in the overall structure. The relative spacing and arrangement of groupings can be defined by self similarity and origin symmetry. Fractal based scatters are described. Further described are bondary condition layer structures that can activate and deactive cloaking/lensing structures.
    Type: Application
    Filed: May 16, 2016
    Publication date: February 20, 2020
    Inventors: Nathan Cohen, Obinna Okoro, Philip Salkind
  • Patent number: 10566629
    Abstract: An aspect of the subject technology/invention of the present disclosure includes electrode structures or elements/components that have (e.g., present) fractal and/or self-complementary shapes or structures, e.g., on a surface. Such shapes or structures can be pre-existing. The electrodes can be made of any suitable material. The electrodes may function or operate or be used as a “seed” structure to incorporate or receive a material or materials useful for lattice assisted nuclear reactions and/or cold fusion processes.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: February 18, 2020
    Assignee: Fractal Antenna Systems, Inc.
    Inventor: Nathan Cohen
  • Publication number: 20200044353
    Abstract: Novel directional antennas are disclosed which utilize plasmonic surfaces (PS) that include or present an array of closely-spaced parasitic antennas, which may be referred to herein as “parasitic arrays” or fractal plasmonic arrays (FPAs). These plasmonic surfaces represent improved parasitic directional antennas relative to prior techniques and apparatus. Substrates can be used which are transparent and/or translucent.
    Type: Application
    Filed: August 13, 2019
    Publication date: February 6, 2020
    Inventors: Nathan Cohen, Ryan Thistle
  • Publication number: 20200044352
    Abstract: Antenna systems are described which provide means of mitigating the undesirable transmission line effect(s) by using fractal metamaterials in close proximity to an antenna, with both the antenna and fractal metamaterials being positioned a conductive surface, which may be inside or adjacent to a cavity. The fractal metamaterial can include an array of close spaced (e.g., less than 1/10 wavelength separation) resonant structures of a fractal shape, resonant at or near the intended frequency of use of the antenna. The fractal metamaterial can reverse the phase of the reflected wave so that the metal cavity no longer produces an out of phase current induced by the antenna. Without the cavity being out of phase to the antenna, the transmission line effect is mitigated substantially and the antenna performance can accordingly be enhanced. Further embodiments omit a cavity and locate a fractal metamaterial and antenna(s) adjacent to an underlying conductive surface.
    Type: Application
    Filed: October 5, 2017
    Publication date: February 6, 2020
    Inventors: Nathan Cohen, Justin Mitchell
  • Publication number: 20200011615
    Abstract: Systems according to the present disclosure provide one or more surfaces that function as heat or power radiating surfaces for which at least a portion of the radiating surface includes or is composed of “fractal cells” placed sufficiently closed close together to one another so that a surface (plasmonic) wave causes near replication of current present in one fractal cell in an adjacent fractal cell. A fractal of such a fractal cell can be of any suitable fractal shape and may have two or more iterations. The fractal cells may lie on a flat or curved sheet or layer and be composed in layers for wide bandwidth or multibandwidth transmission. The area of a surface and its number of fractals determines the gain relative to a single fractal cell. The boundary edges of the surface may be terminated resistively so as to not degrade the cell performance at the edges.
    Type: Application
    Filed: September 17, 2019
    Publication date: January 9, 2020
    Inventor: Nathan Cohen
  • Patent number: 10511027
    Abstract: An aspect of the subject technology/invention of the present disclosure includes electrode structures or elements/components that have (e.g., present) fractal and/or self-complementary shapes or structures, e.g., on a surface. Such shapes or structures can be pre-existing. The electrodes can be made of any suitable material. The electrodes may function or operate or be used as a “seed” structure to incorporate or receive a material or materials useful for lattice assisted nuclear reactions and/or cold fusion processes.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: December 17, 2019
    Assignee: Fractal Antenna Systems, Inc.
    Inventor: Nathan Cohen
  • Patent number: 10498040
    Abstract: Vivaldi tapered slot and Vivaldi horn antennas that feature or include fractal plasmonic surfaces (“FPS”) are described. Vivaldi slot antennas are described which include a conductive surface defining a tapered slot, with the conductive surface including a plurality of fractal resonators which form or constitute a fractal plasmonic surface (FPS). In some embodiments the fractal resonators can be defined by slots. In some embodiments the fractal resonators can include self-complementary features. In exemplary embodiments, two Vivaldi horn antennas may be used for a Vivaldi horn antenna. The two Vivaldi FPS antennas can be arranged in a crossed or cross configuration such that the two antennas are essentially perpendicular to one another and are therefore able to receive and transmit two orthogonal polarizations of radiation. The two antennas can be fed by separate respective feed lines. The two antennas can be mounted inside of a horn or casing.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: December 3, 2019
    Assignee: Fractal Antenna Systems, Inc.
    Inventors: Nathan Cohen, Ryan Thistle, Daniel Earle, Philip Salkind, A. J. Shelman-Cohen
  • Patent number: 10483649
    Abstract: Aspect of the present disclosure are directed to methods and apparatus producing enhanced radiation characteristics, e.g., wideband behavior, in or for antennas and related components by providing concentric sleeves, with air or dielectric material as a spacer, where the sleeves include one or more conductive layers, at least a portion of which includes fractal resonators closely spaced, in terms of wavelength. A further aspect of the present disclosure is directed to surfaces that include dual-use or multiple-use apertures. Such aperture engine surfaces can include a first layer of antenna arrays, a second layer including a metal-fractal backplane player, and a third layer including solar cells for solar cell or solar oriented power collection. Fractal metamaterial ribbons with multiple closely-packed fractal resonators are also disclosed.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: November 19, 2019
    Assignee: Fractal Antenna Systems, Inc.
    Inventor: Nathan Cohen
  • Patent number: 10415896
    Abstract: Systems according to the present disclosure provide one or more surfaces that function as heat or power radiating surfaces for which at least a portion of the radiating surface includes or is composed of “fractal cells” placed sufficiently closed close together to one another so that a surface (plasmonic) wave causes near replication of current present in one fractal cell in an adjacent fractal cell. A fractal of such a fractal cell can be of any suitable fractal shape and may have two or more iterations. The fractal cells may lie on a flat or curved sheet or layer and be composed in layers for wide bandwidth or multibandwidth transmission. The area of a surface and its number of fractals determines the gain relative to a single fractal cell. The boundary edges of the surface may be terminated resistively so as to not degrade the cell performance at the edges.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: September 17, 2019
    Assignee: Fractal Antenna Systems, Inc.
    Inventor: Nathan Cohen
  • Publication number: 20190267176
    Abstract: This invention entails the use of fractal shapes as cores for electromagnets, and a concurrent shape of a fractal for the windings which surround it. The novelty of this invention lies not only with the shaping, but the advantage of such shaping, which includes producing a smaller form factor electromagnet for the same desired magnetic field strength, when compared to a conventional electromagnet. It will be appreciated that a range of devices including electromagnets, based on such fractal shaping, are additionally novel and include but are not limited to solenoid switches, relays, and other devices in which the fractal electromagnets are used to make a change in state of some device.
    Type: Application
    Filed: May 14, 2019
    Publication date: August 29, 2019
    Inventor: Nathan Cohen