Company Filing History:
1 out of 585 
1 out of 62 
1 out of 9 Years Active: 1995-2000
Title: R Duane Apperson: Innovator in Copper Foil and Wire Technology
Introduction
R Duane Apperson is a notable inventor based in McConnelsville, OH (US). He has made significant contributions to the field of materials science, particularly in the development of electrodeposited copper foils and wires. With a total of 4 patents to his name, Apperson's work has advanced the understanding and application of copper materials in various industries.
Latest Patents
One of Apperson's latest patents is for a high fatigue ductility electrodeposited copper foil. This invention relates to an annealable copper foil characterized by a uniform unoriented grain structure that is essentially free of columnar grains. The foil exhibits a fatigue ductility of at least about 25% after being annealed at 177°C for 15 minutes. In a specific embodiment, the foil can achieve a fatigue ductility of at least about 65%. The invention also includes a process for producing this foil using an electrolyte solution with a critical concentration of chloride ions of up to about 5 ppm and organic additives of up to about 0.2 ppm.
Another significant patent involves a process for making copper wire. This invention describes copper wire that also has a uniform unoriented grain structure, free of columnar grains. The process includes cutting copper foil to form strands of wire, which are shaped to achieve the desired cross-sectional shape and size. The method involves flowing an aqueous electrolyte solution between an anode and a cathode, applying voltage to deposit copper foil on the cathode, and shaping the resulting strands.
Career Highlights
Throughout his career, R Duane Apperson has worked with prominent companies such as Gould Inc. and Gould Electronics Inc. His experience in these organizations has contributed to his expertise in materials science and engineering.
Collaborations
Apperson has collaborated with notable individuals in his field, including Sidney J. Clouser and Rudolf Wiechmann. These collaborations have likely enriched his work and expanded the impact of his inventions.
Conclusion
R Duane Apperson's innovative contributions to the field of copper materials have paved the way for advancements in technology and manufacturing processes. His patents reflect a deep understanding of material properties and their applications, making him a significant figure in the industry.