Patents by Inventor Efren Navarro

Efren Navarro 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: 10988842
    Abstract: A two-dimensional transition-metal dichalcogenide layer is grown by reacting a non- or low-volatile source material with a volatilized halogen or halide compound to produce a volatilized composition comprising at least one reaction product. The volatilized composition is flowed through an open chamber of a tube furnace with a temperature gradient, wherein the temperature changes along a path through which the volatilized composition flows through the open chamber of the tube furnace. Where the temperature along the path in the open chamber is in a reaction-temperature range, the volatilized composition is deposited as a two-dimensional crystalline transition-metal dichalcogenide layer.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: April 27, 2021
    Assignee: Massachusetts Institute of Technology
    Inventors: Brian J. Modtland, Jing Kong, Marc A. Baldo, Efren Navarro-Moratalla, Xiang Ji
  • Publication number: 20190330735
    Abstract: A two-dimensional transition-metal dichalcogenide layer is grown by reacting a non- or low-volatile source material with a volatilized halogen or halide compound to produce a volatilized composition comprising at least one reaction product. The volatilized composition is flowed through an open chamber of a tube furnace with a temperature gradient, wherein the temperature changes along a path through which the volatilized composition flows through the open chamber of the tube furnace. Where the temperature along the path in the open chamber is in a reaction-temperature range, the volatilized composition is deposited as a two-dimensional crystalline transition-metal dichalcogenide layer.
    Type: Application
    Filed: April 17, 2018
    Publication date: October 31, 2019
    Applicant: Massachusetts Institute of Technology
    Inventors: Brian J. Modtland, Jing Kong, Marc A. Baldo, Efren Navarro-Moratalla, Xiang Ji
  • Publication number: 20080276810
    Abstract: An automated machine for pre-shaping dough balls in a high speed tortilla machine. A main frame contains a holding press plate with a set of regularly distributed openings, and where a press box is located over the regular openings. Each press box contains a catching ball tube, and a press gate. Each dough ball is sequentially deposited onto a pre-shaper catching ball tube to permit balls to pass through open press gates and onto the surface of a transport band, where they are kept in a predetermined position. Once all of the dough balls reach a predetermined location, they are pre-pressed in place by means of a set of press gates. The flattener press gates close the ball entrance in the catching ball tubes to prevent dough balls entering any further into the press boxes. The press gate devices are actuated to open the catching ball tube and separate the pressing gate device from the pre-pressed balls. The transport band advances the pre-pressed balls towards the main press area.
    Type: Application
    Filed: May 11, 2007
    Publication date: November 13, 2008
    Inventors: Albert M. Ceja, Efren Navarro
  • Publication number: 20050071877
    Abstract: Satellite downstream porting interface API. A novel solution is presented to support various integrated and non-integrated functional blocks within the front-end of a satellite receiver STB (Set Top Box) system. Embedded software, running on an integrated microprocessor within a single chip STB device, is implemented to govern various devices within the satellite STB system. The embedded software may control operational parameters of an external LNB (Low Noise Block) on a satellite dish employed by a user; this may include controlling the polarization of the LNB as well as the associated voltages levels employed by the LNB. The embedded software may also direct the tuning frequency and cut-off frequency of 1 or more SDSs (integrated downstream satellite receivers) receiving output from the satellite dish. The embedded software may also direct many of the various operational parameters of 1 or more SDSs including modulation, code rate, and/or symbol rate of received signals.
    Type: Application
    Filed: June 25, 2004
    Publication date: March 31, 2005
    Inventor: Efren Navarro