Daniel Hassett

Title: Daniel Hassett: Magnetic Sensor and Shield Innovations.

Introduction.

Daniel Hassett is an inventor based in Newtowncunningham, Ireland, whose patent work includes magnetic sensor structures and shield designs. He is associated with Seagate Technology Incorporated and is credited with 5 patents.

Latest Patents.

“Sensor Structure with Multilayer Top Shield” describes a reader sensor with a sensor stack and a composite top shield. The shield combines a bulk portion with a synthetic antiferromagnetic (SAF) portion, which contains top and bottom magnetic layered structures separated by a non-magnetic layer. The magnetic structures include soft magnetic material bounded by layers with magnetic moments of at least 1.4 tesla.

“Magnetoresistive Sensor Having Synthetic Antiferromagnetic Layer in Top and Bottom Shields” describes a sensor structure with SAF layers in both its top and bottom shields. In the described implementation, the bottom shield’s SAF layer also serves as a seed-layer structure.

Career Highlights.

Hassett’s listed patent work focuses on magnetic sensor architecture, including multilayer shielding and synthetic antiferromagnetic structures. These designs address components used in magnetoresistive reader sensors.

Collaborations.

Hassett’s listed coworkers include Zhengqi Lu and Jiansheng Xu. His association with Seagate Technology Incorporated places his work within the company’s technology and patent portfolio.

Conclusion.

Daniel Hassett’s patents reflect a focused contribution to magnetic sensor and shield design, particularly through multilayer and synthetic antiferromagnetic structures.