Location History:
- North St. Paul, MN (US) (1978 - 1979)
- Saint Paul, MN (US) (1999)
- Lakeland, MN (US) (1981 - 2010)
Company Filing History:
20 out of 131,214 
9 out of 7,865 
3 out of 621 
Years Active: 1978-2010
Title: **Truman Frank Kellie: Innovator in Electrophotography**
Introduction
Truman Frank Kellie, a prominent inventor based in Lakeland, Minnesota, has made significant contributions to the field of electrophotography. With an impressive portfolio of 32 patents, Kellie's innovations reflect his commitment to advancing imaging technologies and improving the efficiency of printing processes.
Latest Patents
Among Kellie's most notable recent patents is the "Developing unit and density control method in electrophotography." This invention focuses on a developing unit designed to maintain constant density during the electrophotographic imaging process. Key features include a developer roll, a skive device in contact with the developer roll, a cleaning device, and an ink container. The integration of current measuring devices or voltage meters enhances the effectiveness of the system by monitoring electrical flow.
Another significant contribution is the patent for "Electrophoretic stylus array printing with liquid ink." This innovative process involves an imaging surface, an array of styli, and a flow of liquid ink containing charged particles. By establishing a voltage bias, the system effectively prints images by depositing charged ink particles onto the imaging surface.
Career Highlights
Throughout his career, Truman Frank Kellie has worked with leading companies in the technology sector, including Samsung Electronics and Minnesota Mining and Manufacturing Company, known as 3M. His work at these organizations has allowed him to develop and refine his inventions, making a lasting impact on the industry.
Collaborations
Kellie has collaborated with talented professionals in his field, including colleagues William D. Edwards and Brian P. Teschendorf. These partnerships have contributed to the innovation and development of breakthrough technologies in electrophotography.
Conclusion
Truman Frank Kellie's contributions to the world of electrophotography exemplify the spirit of innovation. His extensive patent portfolio and collaborative efforts with esteemed companies and individuals demonstrate his dedication to advancing imaging technologies, ultimately transforming the way we approach printing and imaging 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.