H David Layman

Title: H David Layman: Innovator in Cathodoluminescent Phosphors

Introduction

H David Layman is a notable inventor based in Ulster, PA, who has made significant contributions to the field of cathodoluminescent materials. With a total of three patents to his name, Layman's work primarily focuses on the development of phosphors that enhance the performance of color television technologies.

Latest Patents

Layman's latest patents include innovative methods for producing green-emitting phosphors. One of his key inventions is a zinc sulfide phosphor coactivated with copper and aluminum. This cathodoluminescent phosphor exhibits specific x and y coordinate values, making it particularly useful in tri-color television cathode ray tubes. The production process involves a critical firing schedule, which includes slow heating to approximately 1000 degrees Celsius, soaking at this temperature for about one hour, and then a gradual cooling process followed by air quenching. Another patent focuses on a method for producing cadmium-free green-emitting cathodoluminescent phosphors, which shares similar characteristics and applications.

Career Highlights

H David Layman has had a distinguished career, working at GTE Sylvania Incorporated, where he has been able to apply his expertise in materials science to develop cutting-edge technologies. His work has contributed to advancements in display technologies, particularly in the realm of television.

Collaborations

Layman has collaborated with notable colleagues, including Henry B Minnier and James E Mathers, who have also contributed to the field of phosphor technology.

Conclusion

H David Layman's innovative work in the development of cathodoluminescent phosphors has had a lasting impact on television technology. His patents reflect a commitment to advancing materials science and improving display performance.