This inventor holds 2 USPTO granted patents. Top assignees: Center for Innovative Technology, University of Virginia Patent Foundation. Active years: 1991-1993.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
1 out of 142 
1 out of 1,048 
Years Active: 1991-1993
Title: F Joseph Keith: Innovator in Control Systems
Introduction
F Joseph Keith is a notable inventor based in Charlottesville, VA (US). He has made significant contributions to the field of control systems, holding a total of 2 patents. His work focuses on enhancing the efficiency and functionality of electronic control systems.
Latest Patents
One of his latest patents is the "Variable Voltage Switched Current Control." This invention provides a digital controller that manages the bearing coil current through a switching bridge, which periodically reverses the applied voltage to the coil. The controller selects an applied voltage from multiple discrete voltage sources. When a rapid change in load current is necessary, a larger magnitude of applied voltage is utilized. Conversely, when a steady average load current is required, a smaller voltage is applied.
Another significant patent is the "Minimum Pulse Width Switching Power Amplifier." This amplifier employs digital logic to generate a control pulse with a width that meets or exceeds a fixed minimum period. The control pulse is based on a base control pulse generated by a comparator. The high-power switching output stage operates between different voltage levels, controlled by the digital logic, ensuring that the average actual output of the amplifier matches the desired output.
Career Highlights
F Joseph Keith has worked with esteemed organizations such as the University of Virginia Patent Foundation and the Center for Innovative Technology. His experience in these institutions has allowed him to further develop his innovative ideas and contribute to advancements in technology.
Collaborations
Throughout his career, Keith has collaborated with notable individuals, including Eric H Maslen and Ronald D Williams. These partnerships have likely enriched his work and expanded the impact of his inventions.
Conclusion
F Joseph Keith's contributions to control systems through his innovative patents demonstrate his expertise and commitment to advancing technology. His work continues to influence the field and inspire future innovations.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile