Company Filing History:
Years Active: 1978-1981
Title: The Innovations of John J Randall, Jr.
Introduction
John J Randall, Jr. is a notable inventor based in Williamstown, MA (US). He has made significant contributions to the field of electrical engineering, particularly in the development of aluminum electrolytic capacitors. With a total of six patents to his name, Randall's work has had a lasting impact on the industry.
Latest Patents
Randall's latest patents include innovative methods for etching aluminum capacitor foil. One of his patents describes a process where aluminum electrolytic capacitor foil is etched in a bath containing 0.7 to 2.0 M hydrochloric acid, 0.2 to 0.5 M hydrated aluminum trichloride, and 0.02 to 0.4 M phosphate ion while subjected to the action of alternating current at temperatures ranging from 35 to 55 degrees Celsius. Another patent outlines a similar etching process using a bath containing 1.0 to 1.8 M hydrochloric acid, 0.25 to 0.5 M aluminum chloride, 0.2 to 1.0 M phosphoric acid, and 1.0 to 2.0 M chromium trioxide, also under alternating current at 35 to 55 degrees Celsius.
Career Highlights
Randall is currently employed at Sprague Electric Company, where he continues to innovate and develop new technologies. His work has been instrumental in advancing the capabilities of aluminum capacitors, which are widely used in various electronic applications.
Collaborations
Throughout his career, Randall has collaborated with notable colleagues, including Walter J Bernard and Mulk A Arora. These partnerships have fostered a creative environment that has led to the successful development of several patents.
Conclusion
John J Randall, Jr. is a distinguished inventor whose contributions to the field of electrical engineering have significantly advanced the technology of aluminum electrolytic capacitors. His innovative patents and collaborations reflect his commitment to excellence in engineering.