This inventor holds 4 USPTO granted patents. Top assignees: Lightning Diversion Systems, Northrop Grumman Systems Corporation. Active years: 1989-1997.
Company Filing History:
3 out of 3 
1 out of 3,449 
Years Active: 1989-1997
Title: John E Schroeder: Innovator in Frequency Selective Devices
Introduction
John E Schroeder is a notable inventor based in Huntington Beach, CA (US). He has made significant contributions to the field of engineering, particularly in the development of frequency selective devices. With a total of 4 patents to his name, Schroeder's work has had a considerable impact on radar systems and aircraft technology.
Latest Patents
One of his latest patents is a sectional filter assembly, which is a frequency selective device that consists of two or more frequency selective surfaces. These surfaces are manufactured to exacting engineering tolerances and are joined together by a seam, allowing the device to function as a single surface without degrading radar system performance or aircraft low-observability characteristics. Another significant patent is a method of forming apertures into thin metallic foils. This device shields composite material surfaces of aircraft from lightning strikes and protects avionics from electromagnetic interference (EMI) and radio frequency interference (RFI). The thin metallic foil features uniformly spaced polygonal apertures that allow for expansion, enabling better fitting on irregular surfaces. When made from aluminum, the foil can be plated with nickel to prevent galvanic corrosion, while copper versions provide a solderable surface.
Career Highlights
Throughout his career, John E Schroeder has worked with prominent companies such as Lightning Diversion Systems and Northrop Grumman Systems Corporation. His expertise in engineering and innovation has led to advancements in technologies that enhance the safety and performance of aircraft.
Collaborations
Schroeder has collaborated with notable individuals in his field, including Myron P Amason and Evert C Alsenz. These partnerships have contributed to the development of innovative solutions in aerospace technology.
Conclusion
John E Schroeder's contributions to the field of engineering, particularly in frequency selective devices, demonstrate his commitment to innovation and safety in aviation. His patents reflect a deep understanding of the challenges faced in aircraft technology, making him a significant figure in his industry.