John H Coleman

Title: Innovations and Contributions of John H. Coleman

Introduction

John H. Coleman is a notable inventor based in Locust Valley, NY, with a remarkable portfolio of 15 patents. His work primarily focuses on semiconductor devices and their fabrication methods, contributing significantly to advancements in the field.

Latest Patents

One of his latest patents is a fabrication method for silicon-on defect layer in field-effect and bipolar transistor devices. This innovation addresses the significance of semiconductor properties such as spreading resistivity and its profile in device regions. The method involves defining an initial semiconductor device region by a buried region and developing an initial spreading resistivity profile through annealing. After this process, the properties of the semiconductor device can be enhanced by removing a surface sub-region and epitaxially growing a monocrystalline film as an improved channel layer for FET devices. This technique is relevant for both MOS and bipolar devices. Another significant patent is the method of forming semiconducting materials and barriers. This process utilizes a gaseous glow-discharge method to coat a substrate with semiconductor material. By controlling a variable electric field and the pressure of the gaseous material, a uniform coating with useful semiconducting properties is produced. The use of concave and cylindrical electrodes helps create a spatially varying electric field, while twin electrodes enable the use of an AC power supply to collect a substantial part of the coating on the substrate.

Career Highlights

Throughout his career, John H. Coleman has worked with esteemed organizations such as Plasma Physics Corporation and Northwestern University. His contributions to the field of semiconductor technology have been instrumental in advancing the capabilities of electronic devices.

Collaborations

Some of his notable coworkers include Tobin Jay Marks and Charles M. Fortmann, who have collaborated with him on various projects, further enhancing the impact of his innovations.

Conclusion

John H. Coleman’s contributions to semiconductor technology through his patents and collaborations have made a significant impact in the field. His innovative methods continue to influence the development of advanced electronic devices.