This inventor holds 1 USPTO granted patent and 1 published patent application and 1 EPO patent. Top assignee: 3M Innovative Properties Company. Active years: 1995.
Company Filing History:
Years Active: 1995
Title: The Innovative Contributions of Donald B. Ketcham
Introduction
Donald B. Ketcham is a notable inventor based in Lakeville, MN (US). He has made significant contributions to the field of technology, particularly in the area of magnetic tape recording. His innovative approach has led to the development of a unique method that enhances the functionality of recorded segments on tape.
Latest Patents
Ketcham holds 1 patent for his invention titled "Degausser for tape with plural recorded segments." This method produces a tape that features multiple recorded segments separated by cue tones, which reduces the likelihood of generating false cue tones. The process involves applying a layer of liquid dispersion to a nonmagnetic substrate, orienting the pigment with a magnetic field, solidifying the layer, and applying a demagnetizing field to neutralize any remanent magnetization.
Career Highlights
Ketcham is associated with 3M Innovative Properties Company, where he has been able to apply his inventive skills to develop practical solutions in the industry. His work has contributed to advancements in magnetic tape technology, showcasing his ability to innovate within a corporate environment.
Collaborations
Throughout his career, Ketcham has collaborated with talented individuals such as Robert P. McCollam and Kent R. Kalar. These partnerships have likely fostered a creative environment that encourages the exchange of ideas and the development of new technologies.
Conclusion
Donald B. Ketcham's contributions to the field of magnetic tape technology exemplify the impact of innovation in enhancing existing methods. His patent for a degausser demonstrates his commitment to improving technology and reducing errors in tape recording.