Kofi Gyasi

Title: Kofi Gyasi: Innovator in Magnetic Transducer Technology

Introduction

Kofi Gyasi is a notable inventor based in Northborough, MA (US). He has made significant contributions to the field of magnetic transducer technology, holding 2 patents that showcase his innovative approach to engineering.

Latest Patents

One of Kofi Gyasi's latest patents involves laminated plated pole pieces for thin film magnetic transducers. In this invention, the pole pieces of a thin film head are formed by two thin film layers of the magnetic metal NiFe, each approximately 20,000 angstroms thick. These layers are separated by an electrically insulating layer of alumina (Al.sub.2 O.sub.3), ceramic, or NiFe oxide that is about 100 angstroms thick. In one embodiment, a hard-baked photoresist layer is formed only around the edges of the first NiFe layer. The electrically insulating layer is then deposited over the top surface of the first NiFe layer and over the hard-baked photoresist layer, followed by the deposition of the second NiFe layer. This results in a three-layer metal/insulator/metal pole piece, where the hard-baked photoresist blocks edge short-circuiting between the two thin film NiFe layers. In another embodiment, edge short-circuiting is minimized by allowing small filaments of a high electrical resistance plating seed layer of NiFe to extend between the two NiFe thin film layers. The high resistance of these long and thin NiFe filaments is significantly greater than the resistance of the two NiFe thin film layers.

Career Highlights

Kofi Gyasi is currently employed at Quantum Corporation, where he continues to develop innovative technologies in the field of magnetic transducers. His work has been instrumental in advancing the capabilities of thin film heads used in various applications.

Collaborations

Kofi collaborates with Michael I Mallary, contributing to the innovative projects at Quantum Corporation.

Conclusion

Kofi Gyasi is a prominent inventor whose work in magnetic transducer technology has led to significant advancements in the field. His patents reflect a deep understanding of engineering principles and a commitment to innovation.