Patents by Inventor Joshua Ensworth

Joshua Ensworth 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).

  • DC-DC boost converter
    Patent number: 10298071
    Abstract: A DC-DC boost converter and apparatus including the same are disclosed. In one embodiment, the DC-DC converter comprises an input for receiving a first voltage at a first level, where the first voltage is negative; a transformer coupled to the input to convert the first voltage to a second voltage at a second level, where the second level is higher than the first level and the second voltage is positive; and an output connected to the transformer to output the second voltage.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: May 21, 2019
    Assignee: RICOH CO., LTD
    Inventors: Kenneth Gudan, Jonathan J. Hull, Matthew S. Reynolds, Joshua Ensworth
  • System for ambient energy harvesting
    Patent number: 9559605
    Abstract: A method and apparatus is disclosed herein for harvesting ambient energy. In one embodiment, an energy harvester comprises: a first RF rectifier to output a first voltage determined by rectified RF energy in response to received RF energy; a first energy reservoir coupled to the first RF rectifier to store energy at the first voltage; a DC/DC converter coupled to the first energy reservoir to convert the first voltage to a second voltage; a second reservoir coupled to the DC/DC converter to store energy at the second voltage, the second voltage being greater than the first voltage; and a third reservoir coupled to the second reservoir to receive energy transferred from the second reservoir periodically.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: January 31, 2017
    Assignee: Ricoh Co., Ltd.
    Inventors: Ken Gudan, Sergey Chemishkian, Matthew S. Reynolds, Stewart Thomas, Joshua Ensworth
  • SYSTEM FOR AMBIENT ENERGY HARVESTING
    Publication number: 20150256097
    Abstract: A method and apparatus is disclosed herein for harvesting ambient energy. In one embodiment, an energy harvester comprises: a first RF rectifier to output a first voltage determined by rectified RF energy in response to received RF energy; a first energy reservoir coupled to the first RF rectifier to store energy at the first voltage; a DC/DC converter coupled to the first energy reservoir to convert the first voltage to a second voltage; a second reservoir coupled to the DC/DC converter to store energy at the second voltage, the second voltage being greater than the first voltage; and a third reservoir coupled to the second reservoir to receive energy transferred from the second reservoir periodically.
    Type: Application
    Filed: March 5, 2014
    Publication date: September 10, 2015
    Inventors: Ken Gudan, Sergey Chemishkian, Matthew S. Reynolds, Stewart Thomas, Joshua Ensworth
  • DC-DC BOOST CONVERTER
    Publication number: 20150256082
    Abstract: A DC-DC boost converter and apparatus including the same are disclosed. In one embodiment, the DC-DC converter comprises an input for receiving a first voltage at a first level, where the first voltage is negative; a transformer coupled to the input to convert the first voltage to a second voltage at a second level, where the second level is higher than the first level and the second voltage is positive; and an output connected to the transformer to output the second voltage.
    Type: Application
    Filed: December 18, 2014
    Publication date: September 10, 2015
    Inventors: Kenneth Gudan, Jonathan J. Hull, Matthew S. Reynolds, Joshua Ensworth