Company Filing History:
5 out of 915 
2 out of 875 
1 out of 3,975 
Years Active: 1992-2009
Title: Innovations by William A. Ellingson
Introduction
William A. Ellingson, based in Naperville, IL, is an accomplished inventor with a remarkable portfolio of eight patents. His innovative contributions span various fields, showcasing his expertise in advanced testing methods and optical technologies.
Latest Patents
Among his latest innovations is the patent for a **Method and Apparatus for Ultrasound Phased Array Testing of Bearing Balls**. This invention features an automated scanning system that employs specialized dual phased array ultrasonic transducers. It allows for the production and detection of Rayleigh waves in ceramic bearing balls, facilitating nondestructive, non-contact inspections. The transducers are designed with a complex curvature that focuses ultrasonic energy precisely, enhancing the generation and reception of Rayleigh wave signals in spherical objects.
Another notable patent is the **Optical Apparatus for Laser Scattering by Objects Having Complex Shapes**. This apparatus enables real-time observation and measurement of both surface and subsurface characteristics of complex objects. It incorporates an optical fiber bundle with a linear array of fibers, some of which form a multi-fiber optical waveguide for laser light reception. The output is processed through digital signal processing to detect anomalies such as cracks, voids, and other defects.
Career Highlights
William A. Ellingson has held significant positions at prestigious institutions, including the University of Chicago and Argonne National Laboratory. His work in these organizations has furthered research and development in advanced testing technologies and materials science.
Collaborations
Throughout his career, Ellingson has collaborated with esteemed professionals such as Jiangang Sun and Mark P. Brada. These collaborations have contributed to the advancement of his inventions and have fostered an environment of innovation and scientific inquiry.
Conclusion
William A. Ellingson continues to exemplify the spirit of innovation through his groundbreaking patents and collaborative efforts. His contributions significantly impact the fields of materials testing and optical technology, marking him as a key figure among contemporary inventors.