This inventor holds 5 USPTO granted patents. Top assignee: 3M Innovative Properties Company. Active years: 1987-1992.
Location History:
- Richfield, MN (US) (1987 - 1991)
- Saint Paul, MN (US) (1988 - 1992)
Company Filing History:
Years Active: 1987-1992
Title: David K Douden: Innovator in Silica Flake Technology
Introduction
David K Douden is a notable inventor based in Richfield, MN (US). He has made significant contributions to the field of materials science, particularly in the development of silica flakes. With a total of 5 patents to his name, Douden's work has implications for various industries, including chromatography and protective coatings.
Latest Patents
Douden's latest patents include innovative methods for creating thin silica flakes. One of his patents describes a method of making thin silica flakes using hydrated sodium silicate particles. These particles can be expanded by heat to form thin-walled bubbles, which can then be processed to produce hydrated silica flakes. These flakes can be combined with non-swelling sorptive particles, such as TLC grade silica, to create chromatographic articles. One application of this technology is a composite material that incorporates a poly(tetrafluoroethylene) fibril matrix, enhancing the material's resistance to abrasion and corrosion.
Another patent focuses on the method of making thin refractory flakes from a sol of metal oxides. This process is akin to blowing soap bubbles, where a laminar flow of air is directed through a narrow orifice. The resulting bubbles can be dried and fragmented, then fired to produce refractory flakes suitable for protective coatings. These coatings not only exhibit pearlescent qualities but also provide excellent resistance to abrasion and corrosive substances.
Career Highlights
David K Douden is currently associated with 3M Innovative Properties Company, where he continues to innovate and develop new technologies. His work has been instrumental in advancing the applications of silica in various fields.
Collaborations
Douden collaborates with Thomas J Scanlan, contributing to the innovative environment at 3M. Their combined expertise enhances the development of new materials and technologies.
Conclusion
David K Douden's contributions to silica flake technology demonstrate his commitment to innovation and excellence in materials science. His patents reflect a deep understanding of the applications and potential of silica in various industries.