Patents by Inventor David Koifman

David Koifman 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).

  • Retrofit wireless solar charger apparatus and methods
    Patent number: 10153657
    Abstract: A retrofit wireless solar charger apparatus for a mobile device, the charger apparatus having an enclosure enclosing: a photovoltaic (PV) array having an efficiency of at least 22 percent, the PV array exposed to ambient light; a battery in electrical contact with the PV array; an RF power transfer coil in electrical contact with the battery; a printed circuit board (PCB) having a front side and a back side, the PCB having surface-mounted components mounted on the front side and the PCB being in electrical contact with the PV array, the battery, and the RF transfer coil; and a two-sided adhesive layer, the two-sided adhesive layer adhered to the back side of the PCB; wherein the charger apparatus has a thickness ranging from 1 to 3 mm and the charger apparatus is retrofittably-adhered on-board the mobile device.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: December 11, 2018
    Inventor: David Koifman