Robert A Haenggi

Title: The Innovative Contributions of Robert A. Haenggi

Introduction

Robert A. Haenggi is a notable inventor based in Woodbury, MN (US), recognized for his significant contributions to the field of retroreflective materials and thermoplastic marking sheets. With a total of 6 patents to his name, Haenggi has made strides in enhancing the functionality and performance of various products used in road safety and visibility.

Latest Patents

One of Haenggi's latest patents is for a retroreflective article that exhibits suitable retroreflective luminance under both dry and dynamic wet conditions. This innovative article includes an enclosed-lens retroreflective sheeting that, under dry conditions, demonstrates a coefficient of retroreflective luminance of about 40 (millicandela/m²)/lux as measured by ASTM D 4061-94. Notably, under dynamic wet conditions, the sheeting increases in its coefficient of retroreflective luminance. Additionally, the article features a plurality of retroreflective elements that are partially embedded in a light transmissible bonding layer on the front reflective surface of the retroreflective sheeting.

Another significant patent involves a process for making conformable thermoplastic marking sheets. These thermoplastic-based pavement marking sheets utilize a conformant composite material that includes polyolefin and a non-reinforcing mineral particulate, along with a thermoplastic upper surface. The upper surface is preferably embedded with reflective elements and/or skid-resistant particles. Haenggi's innovative approach also includes a solventless process for embedding particles in thermoplastic pavement marking sheets, which allows for the application of conformant pavement marking sheets even in cooler conditions.

Career Highlights

Throughout his career, Robert A. Haenggi has worked with prominent companies such as Minnesota Mining and Manufacturing Company and 3M Innovative Properties Company. His work in these organizations has significantly influenced the development of advanced materials and technologies in the industry.

Collaborations

Haenggi has collaborated with notable colleagues, including James A. Laird and James E. Lasch, contributing to various projects that have furthered innovation in their respective fields.

Conclusion

Robert A. Haenggi's inventive spirit and dedication to improving retroreflective materials and marking sheets have made a lasting impact on safety and visibility technologies. His patents reflect a commitment to innovation that continues to benefit various