William A Coghlan

Title: The Innovative Journey of William A. Coghlan

Introduction

William A. Coghlan, an accomplished inventor based in Tempe, Arizona, has made significant contributions to the field of innovations with a portfolio of five patents. His work primarily focuses on the evaluation and enhancement of phosphorescent materials and the efficient driving of electroluminescent (EL) panels.

Latest Patents

Coghlan's recent patent involves a novel test cell designed for evaluating phosphor samples. This test cell is ingeniously constructed with a bottom plate and a top plate featuring concentric apertures that create a central test cavity. A post attached to the bottom plate seals off this cavity, while a slide covers the top, maintaining a uniform thickness for accurate testing. The test cavity is filled with phosphor suspended in uncured resin, which is cured to ensure stability while allowing for repeated measurements with consistent results. The testing process utilizes a thin film of oil to ensure efficient surface wetting.

Another notable patent addresses the innovative method of driving an EL panel without the necessity of a direct current (DC) bias. This innovation incorporates an inverter connected to an EL lamp through a high-pass filter composed of a series capacitor and a shunt resistor. The designed filter not only enhances performance but also incorporates a time constant greater than 0.005 seconds, ensuring the capacitor’s capacitance is at least tenfold that of the EL lamp.

Career Highlights

William A. Coghlan has built a diverse career, contributing to companies such as Durel Corporation and World Properties, Inc. His extensive experience in these organizations has fostered an environment for innovation, allowing him to refine and develop his groundbreaking inventions.

Collaborations

Throughout his career, Coghlan has worked alongside other innovative professionals, notably Charles I. Zovko and Edward L. Kinnally. These collaborations have not only enriched his work but have also contributed to advancements in the technologies they pursued together.

Conclusion

William A. Coghlan stands out as a remarkable inventor whose dedicated work has led to practical advancements in the evaluation of phosphorescent materials and electroluminescent technology. His contributions continue to impact the innovation landscape, illustrating the value of creativity and collaboration in scientific advancements.