Company Filing History:
Years Active: 2007-2024
Title: David L. Hofeldt: Innovator in Blown Film Measurement Technologies
Introduction
David L. Hofeldt is a prominent inventor based in Oakdale, MN (US), known for his significant contributions to the field of blown film measurement technologies. With a total of 11 patents to his name, Hofeldt has made remarkable advancements that enhance the efficiency and accuracy of film thickness measurement.
Latest Patents
Hofeldt's latest patents include innovative methods and systems for blown film thickness measurement. One notable invention involves a sensing system that utilizes a terahertz (THz) sensor positioned adjacent to a film bubble extruded from a blown film die. This system is designed to measure the film thickness by guiding the THz sensor around the circumference of the film bubble. Another significant patent is a time-domain terahertz measurement system featuring a single reference surface. This system allows for thermal expansion adjustments and performs linear corrections to accurately measure properties such as thickness profiles and effective refractive index profiles of samples.
Career Highlights
David L. Hofeldt is currently associated with 3M Innovative Properties Company, where he continues to develop cutting-edge technologies. His work has not only advanced the field of blown film measurement but has also contributed to the broader landscape of material science and engineering.
Collaborations
Hofeldt has collaborated with notable colleagues, including Derek H. Justice and Catherine P. Tarnowski, to further enhance the innovations in his field. Their combined expertise has led to the development of advanced measurement systems that are crucial for various applications.
Conclusion
David L. Hofeldt stands out as a key figure in the realm of blown film measurement technologies. His innovative patents and collaborative efforts continue to push the boundaries of what is possible in this field.
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