Company Filing History:
Years Active: 1987-1988
Title: Innovations in Copper Etching by Daniel J Barnett
Introduction
Daniel J Barnett is a notable inventor based in San Jose, CA, who has made significant contributions to the field of printed circuit board manufacturing. With a total of 3 patents to his name, Barnett's work focuses on enhancing the efficiency and effectiveness of copper etching processes.
Latest Patents
Barnett's latest patents revolve around a copper etching process and product that is particularly suitable for the manufacture of printed circuit boards. His innovative approach involves etching copper in a liquid etchant, where the crystal structure of the copper is meticulously selected and controlled. This process aims to provide an anisotropic etch and a vertical-to-lateral etching ratio greater than 1:1. In one embodiment, the etching solution comprises nitric acid, copper nitrate or sulfuric acid, a polymer, and a surfactant, with the copper exhibiting a top surface crystal structure predominantly oriented in the (111) direction. Another embodiment utilizes hydrogen peroxide and sulfuric acid, with the copper foil having a top surface crystal structure featuring predominantly (311) and (511) orientations, as well as (111) orientation. The resulting printed circuit boards manufactured according to Barnett's invention demonstrate enhanced etching capabilities and precision in forming desired foil patterns.
Career Highlights
Barnett's career is marked by his dedication to advancing technology in the field of electronics. His work at Psi Star has positioned him as a key player in the development of innovative solutions for printed circuit board manufacturing. His patents reflect a deep understanding of materials science and engineering principles, contributing to the evolution of manufacturing processes in the electronics industry.
Collaborations
Throughout his career, Barnett has collaborated with esteemed colleagues such as James F Battey and Norvell J Nelson. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas, further enhancing the quality of their work.
Conclusion
Daniel J Barnett's contributions to the field of copper etching and printed circuit board manufacturing are noteworthy. His innovative patents and collaborative efforts have significantly impacted the industry, paving the way for future advancements in technology.