Company Filing History:
4 out of 58,132 
4 out of 52 
2 out of 97 
Years Active: 1985-2000
Title: The Innovations of David M Stumfall
Introduction
David M Stumfall is a notable inventor based in Santa Ana, California. He has made significant contributions to the field of technology, particularly in the areas of display systems and electromagnetic interference (EMI) filtering. With a total of six patents to his name, Stumfall's work has had a considerable impact on the industry.
Latest Patents
Stumfall's latest patents include an "Apparatus and method of providing switching frequency synchronization." This invention addresses the issue of interference on display screens in in-flight entertainment systems caused by power conversion from a regulator. The apparatus features a clock generator that produces both a video clock signal and a regulator clock signal, ensuring that the voltage supplied to the display screen is synchronized effectively. Another significant patent is the "Apparatus and method of providing EMI filtering." This invention utilizes a voltage sense circuit in conjunction with a power correction circuit to enhance EMI filtering. The apparatus is designed to receive an alternating current signal and includes a filter with input and output terminals, improving the overall performance of electronic systems.
Career Highlights
Throughout his career, David M Stumfall has worked with prominent companies such as Sony Corporation and Sony Trans Com Inc. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to advancements in technology.
Collaborations
Stumfall has collaborated with notable individuals in the industry, including Kazutoyo Sekine and Bruce Robert Ferguson. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.
Conclusion
David M Stumfall's contributions to technology through his patents and collaborations highlight his role as an influential inventor. His work continues to shape the future of display systems and EMI filtering, showcasing the importance of innovation in the tech industry.