Company Filing History:
2 out of 2,202 
1 out of 902 Years Active: 1978-2002
Title: Innovations of John S. Dunning
Introduction
John S. Dunning is a notable inventor based in Corvallis, OR (US). He has made significant contributions to the field of materials science, particularly in the development of oxidation-resistant alloys. With a total of 3 patents to his name, Dunning's work has implications for various high-temperature applications.
Latest Patents
Dunning's latest patents include a method for producing oxidation-resistant alloys. This method involves creating austenitic alloys that can withstand temperatures below 800°C. The alloy composition includes 14-18% chromium, 15-18% nickel, 1-3% manganese, 1-2% molybdenum, 2-4% silicon, and the balance being iron. The process requires heating the alloy to 800°C for 175-250 hours to form a continuous silicon oxide film, enhancing its oxidation resistance.
Another significant patent is for a ductile duplex iron-based alloy containing aluminum. This two-phase alloy is designed to resist oxidation and fidation at high temperatures. The composition includes 8 to 20 wt % of chromium, 6 to 30 wt % of nickel, and 3 to 11.5 wt % of aluminum, among other elements. The atomic ratio of nickel to aluminum in this alloy is maintained between 0.8 and 1.2, ensuring its durability and performance.
Career Highlights
Throughout his career, Dunning has worked with esteemed organizations, including the United States of America as represented by the Secretary of Energy and the Department of Energy. His work has been pivotal in advancing materials that can withstand extreme conditions, making him a valuable asset in the field of engineering and materials science.
Collaborations
Dunning has collaborated with notable individuals such as David E. Alman and Mark I. Copeland. These partnerships have contributed to the successful development of his patented technologies and innovations.
Conclusion
John S. Dunning's contributions to the field of materials science through his innovative patents have established him as a prominent figure in the industry. His work on oxidation-resistant alloys continues to influence high-temperature applications, showcasing the importance of his research and inventions.