Harold T Kelleher

Title: Harold T. Kelleher: Innovator in Lead Frame Technology

Introduction

Harold T. Kelleher is a notable inventor based in Attleboro, MA (US). He has made significant contributions to the field of lead frame technology, holding a total of 4 patents. His work primarily focuses on methods that enhance the efficiency and functionality of lead frames used in electronic devices.

Latest Patents

One of Kelleher's latest patents is a method of forming lead frames with preformation support. This invention outlines a process for creating a lead frame that features fine-pitched lead frame leads. The method involves etching a first side of the lead frame material to define the lead frame leads and die pad, while ensuring that the etch process does not penetrate completely through the material. Following this, the partially etched side is covered with a tape or layer of photoresist, and the second side is etched to finalize the lead frame, which may then be plated.

Another significant patent is the deformable lead frame for overcurrent protection. This lead frame is designed to divert current to an adjacent conductor when the current exceeds a predetermined level. It includes a first portion for carrying a chip with an integrated circuit and a second portion that receives current flowing through the integrated circuit. The second portion, which may consist of a bimetallic component, is physically deformed by the current and is positioned to contact the adjacent conductor when the current reaches a specified magnitude.

Career Highlights

Harold T. Kelleher is currently employed at Texas Instruments Corporation, where he continues to innovate in the field of electronic components. His work has been instrumental in advancing lead frame technology, which is crucial for the performance of various electronic devices.

Collaborations

Throughout his career, Kelleher has collaborated with notable colleagues, including David W. West and Gijsbert Willem Lokhorst. These collaborations have contributed to the development of innovative solutions in the electronics industry.

Conclusion

Harold T. Kelleher's contributions to lead frame technology have made a significant impact on the electronics industry. His innovative patents and ongoing work at Texas Instruments Corporation highlight his dedication to advancing technology in this field.