John F Dreyer

Title: Innovations of John F Dreyer

Introduction

John F Dreyer is a notable inventor based in North Oaks, Minnesota. He has made significant contributions to the field of retroreflective technology, holding a total of 16 patents. His work has enhanced the visibility and safety of various products through innovative designs.

Latest Patents

Dreyer's latest patents include advancements in retroreflectors that feature two optical surfaces and varying retroreflectivity. These retroreflective articles utilize a first surface with multiple light redirecting structures and a second surface with retroreflective and separation areas. This design allows for substantial light incident on the first surface to be superimposed on the second surface, resulting in varying levels of retroreflection. The variations can range from retroreflection to no retroreflection, different colors, and brightness levels. This technology increases the conspicuity of objects or individuals using these retroreflective articles. Another significant patent involves imaging articles and methods that employ dual-axis retroreflective elements, such as 90-degree prisms and linear lenticular elements, to enhance imaging capabilities.

Career Highlights

Throughout his career, John F Dreyer has worked with prominent companies, including Minnesota Mining and Manufacturing Company and 3M Innovative Properties Company. His innovative contributions have played a crucial role in the development of retroreflective technologies.

Collaborations

Dreyer has collaborated with notable coworkers, including Sanford Cobb, Jr. and Madeleine B Fleming. Their combined expertise has furthered advancements in the field of retroreflective technology.

Conclusion

John F Dreyer's work in retroreflective technology has significantly impacted safety and visibility in various applications. His innovative patents and collaborations highlight his dedication to advancing this important field.