Location History:
- Lake Hapatcong, NJ (US) (2012)
- Eagan, MN (US) (1998 - 2023)
Company Filing History:
4 out of 14,059 
1 out of 7,865 
1 out of 832,680 Years Active: 1998-2024
Title: The Innovations of Robert D. Hamann
Introduction
Robert D. Hamann is an accomplished inventor based in Eagan, MN (US). He holds a total of 6 patents that showcase his expertise in the field of thermoplastic polyurethane materials. His innovative contributions have significantly impacted various industries, particularly in manufacturing and light directing technologies.
Latest Patents
One of Hamann's latest patents is for extruded polyurethane surface films. This invention relates to a surfacing film that includes a base layer made from a thermoplastic polyurethane film. The film is created from a reaction mixture of a diisocyanate, a polyester polyol with a melting temperature of at least about 30° C., and a diol chain extender. The surfacing film offers several advantages, including easier and more cost-effective manufacturing through direct extrusion. Additionally, it demonstrates improved resistance to discoloration and exhibits good toughness.
Another notable patent involves a polyurethane layer for light directing articles. This aliphatic thermoplastic polyurethane composition is designed for use in thin, flexible light directing articles. It imparts flexibility, toughness, and protection to articles containing optically active elements. The composition boasts improved thermostability at higher temperatures, with a cross-over temperature greater than 110° C. and a glass transition temperature (Tg) between 35° C. and 70° C.
Career Highlights
Throughout his career, Robert D. Hamann has worked with prominent companies, including 3M Innovative Properties Company. His work has led to significant advancements in the field of materials science, particularly in the development of polyurethane technologies.
Collaborations
Hamann has collaborated with notable individuals in his field, including Charlie C. Ho and Jay M. Jennen. These collaborations have contributed to the success of his innovative projects and patents.
Conclusion
Robert D. Hamann's contributions to the field of thermoplastic polyurethane materials have established him as a significant figure in innovation. His patents reflect a commitment to advancing technology and improving manufacturing processes.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.