John D Michaelsen

Title: John D Michaelsen: Innovator in Magnetic Recording Technologies

Introduction

John D Michaelsen is a notable inventor based in Los Gatos, CA (US). He has made significant contributions to the field of magnetic recording technologies, holding a total of 2 patents. His work focuses on enhancing the performance and durability of magnetic recording media.

Latest Patents

Michaelsen's latest patents include innovations that address critical challenges in magnetic recording. One of his patents is for a corrosion-resistant magnetic recording media. This invention involves a thin film magnetic recording medium designed for deposition on a record carrier. The ferromagnetic alloy used in this medium contains iron, cobalt, and chromium, with specific percentages to optimize magnetic properties and corrosion resistance. The preferred range of chromium is from 10-18%, ensuring excellent performance in storing information through the spatial distribution of magnetic transitions.

Another significant patent is for a two-sided bias sputter deposition method and apparatus. This method allows for the coating of a thin film upon a substrate in a vacuum chamber using the sputter deposition technique on both sides of the substrate without the need for rotation. The innovative design includes movable rams that supply power and cooling to the substrate, enhancing the efficiency of the sputtering process.

Career Highlights

John D Michaelsen is currently associated with the International Business Machines Corporation (IBM). His work at IBM has allowed him to push the boundaries of magnetic recording technology, contributing to advancements that are crucial for data storage solutions.

Collaborations

Throughout his career, Michaelsen has collaborated with esteemed colleagues, including Thomas N Kennedy and William C Lester. These collaborations have fostered an environment of innovation and have led to the development of groundbreaking technologies in the field.

Conclusion

John D Michaelsen's contributions to magnetic recording technologies exemplify his dedication to innovation. His patents reflect a deep understanding of materials and processes that enhance the performance of magnetic media. Michaelsen's work continues to influence the industry, paving the way for future advancements in data storage solutions.