Location History:
- Saint Paul, MN (US) (1999)
- Ames, IA (US) (1997 - 2001)
- Maplewood, MN (US) (1997 - 2002)
Company Filing History:
8 out of 7,865 
6 out of 14,076 
Years Active: 1997-2002
Title: David E Johnson: Innovator in Abrasive Technology
Introduction
David E Johnson is a notable inventor based in Maplewood, MN (US). He has made significant contributions to the field of abrasive technology, holding a total of 14 patents. His work has focused on developing innovative abrasive brushes and filaments that enhance performance and efficiency in various applications.
Latest Patents
Among his latest patents is the invention of an abrasive brush with filaments containing plastic abrasive particles. This invention features abrasive filaments that can include monofilaments, coextruded core/sheath filaments, and coated preformed cores. The patent also describes abrasive brush constructions that utilize a plurality of these filaments mounted on a suitable substrate, as well as unitary injection molded abrasive brushes. Additionally, Johnson has developed methods for making these filaments and brushes, along with techniques for using them effectively. Another significant patent is for a molded abrasive brush, which has a backing with numerous bristles extending from it. This brush is integrally molded from a moldable polymer, such as a thermoset polymer, thermoplastic polymer, or thermoplastic elastomer. The polymer includes organic or inorganic abrasive particles interspersed throughout the bristles and the brush itself. The patent also outlines a method for making this molded abrasive brush and a technique for refining a workpiece surface using it.
Career Highlights
David E Johnson has worked with prominent companies in the industry, including Minnesota Mining and Manufacturing Company and 3M Innovative Properties Company. His experience in these organizations has allowed him to refine his skills and contribute to the development of innovative abrasive technologies.
Collaborations
Throughout his career, Johnson has collaborated with notable colleagues, including Richard M Pihl and David C Roeker. These partnerships have fostered a creative environment that has led to the advancement of abrasive technology.
Conclusion
David E Johnson's contributions to abrasive technology through his patents and collaborations have significantly impacted the industry. His innovative approach continues to inspire advancements in the field.