Unified Patents plans to release charted prior art on Bunker Hill patents weekly until its assertion of invalid patents ceases. Unified has released several charts within the last few weeks:

Using Pearl, we have successfully identified and charted prior art against patents owned by Bunker Hill, an NPE and entity of Dominion Harbor Enterprises. U.S. Patent 9,821,668 generally focuses on optimizing the total recharge time for energy storage devices in electric vehicles (EVs). U.S. Patent 9,975,439 generally uses a bi-directional buck/boost converter, the system adeptly manages energy transfer between a vehicle battery and an external source or an electric motor. U.S. Patent 10,291,158 generally manages power flow between the motors and the ESS, enabling different modes of operation such as driving the vehicle with both motors, using one motor to drive and the other as a generator, and managing energy storage with batteries and ultracapacitors. U.S. Patent 10,374,529 generally integrates an energy storage system (ESS), a power conversion system, and two motor/generators, each connected to a transmission or power split device. U.S. Patent 10,604,023 generally relates to a traction system for electric or hybrid vehicles, incorporating a voltage inverter, motor drive circuit, and a bi-directional buck/boost converter to manage power between a battery and an external energy source.

Identified Prior Art on U.S. Patent 9,821,668 (click to download chart)

Identified Prior Art on U.S. Patent 9,975,439 (click to download chart)

Identified Prior Art on U.S. Patent 10,291,158 (click to download chart)

Identified Prior Art on U.S. Patent 10,374,529 (click to download chart)

Identified Prior Art on U.S. Patent 10,604,023 (click to download chart)