Donald J Coulman

Title: The Innovations of Donald J. Coulman

Introduction

Donald J. Coulman is a notable inventor based in Corvallis, OR (US). He has made significant contributions to the field of photonic structures and devices. With a total of 6 patents to his name, his work has had a considerable impact on the development of advanced optical technologies.

Latest Patents

Coulman's latest patents focus on photonic crystal structures. These structures are created through a method that involves several steps. First, a substrate is provided, followed by the deposition of at least one planar layer to form a stack. Each planar layer consists of two or more sublayers with different refractive indices. A hard mask material is then deposited, along with an imprintable material over the hard mask. The imprintable material is patterned by imprinting an array of depressions. Finally, a directional etching process is used to create a regular array of openings through the hard mask material and the stack.

Career Highlights

Throughout his career, Donald J. Coulman has worked with prominent companies such as Hewlett-Packard Development Company, L.P. and Hewlett-Packard Company. His experience in these organizations has allowed him to refine his skills and contribute to various innovative projects.

Collaborations

Coulman has collaborated with several talented individuals, including John M. Koegler, III and John M. Da Cunha. These collaborations have further enriched his work and expanded the scope of his inventions.

Conclusion

Donald J. Coulman's contributions to the field of photonics are noteworthy and demonstrate his innovative spirit. His patents and collaborations reflect a commitment to advancing technology in meaningful ways.