Patents by Inventor Christoforos Somarakis

Christoforos Somarakis 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: 20220266513
    Abstract: A drop-on-demand (DOD) printer is disclosed having an ejector which may include a nozzle, the nozzle including a tank in communication with a source of printing material, a constricted dissipative section in communication with the tank, which may include an elongated internal channel, and a shaping tip in communication with the constricted dissipative section which can include an exit orifice. The (DOD) printer also includes a power source configured to supply one or more pulses of power to the ejector, which causes one or more drops of the printing material to be jetted out of the nozzle. The DOD printer may include a constricted dissipative section configured to obstruct fluid flow that is cylindrical or axisymmetric and having a diameter less than a diameter of the tank and less than a diameter of the shaping tip. The DOD printer may include a nozzle or an array of nozzles.
    Type: Application
    Filed: February 25, 2021
    Publication date: August 25, 2022
    Applicant: PALO ALTO RESEARCH CENTER INCORPORATED
    Inventors: Christoforos Somarakis, Svyatoslav Korneev, Saigopal Nelaturi, Adrian Lew
  • Publication number: 20220266512
    Abstract: A nozzle for a printing system is disclosed. The nozzle includes a tank in communication with a source of printing material. The nozzle also includes a constricted dissipative section in communication with the tank, which may include an elongated internal channel. The nozzle may also include a shaping tip in communication with the constricted dissipative section may include an exit orifice. The constricted dissipative section may be axisymmetric and may include at least three internal channels not in communication with one another. Also disclosed is an array of nozzles for a printing system including a plurality of nozzles, with each nozzle including a tank in communication with a source of printing material, a constricted dissipative section in communication with the tank and configured to obstruct fluid flow and having an elongated internal channel, and a shaping tip in communication with the constricted dissipative section may include an exit orifice.
    Type: Application
    Filed: February 25, 2021
    Publication date: August 25, 2022
    Applicant: PALO ALTO RESEARCH CENTER INCORPORATED
    Inventors: Christoforos Somarakis, Svyatoslav Korneev, Saigopal Nelaturi, Adrian Lew
  • Publication number: 20220187785
    Abstract: System and method that to shape micro-object density distribution (how densely the micro-objects are assembled in particular spatial regions) are provided. A high speed camera tracks existing object density distribution. An array of photo-transistor-controlled electrodes is used to generate a dynamic potential energy landscape for manipulating objects with both DEP and EP forces, and a video projector is used actuate the array. One or more computing devices are used to: process images captured by the camera to estimate existing density distribution of objects; receive a desired density distribution of micro-objects; define a model describing a variation of micro-object density over time due to capacitance-based interactions; generate a sequence of electrode potential that when generated would minimize error between the existing density distribution and a desired density distribution; and use the sequences of electrode potentials to actuate the electrodes.
    Type: Application
    Filed: December 15, 2020
    Publication date: June 16, 2022
    Inventors: Ion Matei, Johan de Kleer, Christoforos Somarakis