Location History:
- Schenectady, NY (US) (1984 - 1995)
- Morgantown, WV (US) (1997)
Company Filing History:
Years Active: 1984-1997
Title: Innovations by Keh-Minn Chang: A Leader in Superalloy Technology
Introduction
Keh-Minn Chang, located in Schenectady, NY, is a prominent inventor and innovator with an impressive portfolio of 32 patents. His work primarily revolves around advancements in nickel-based superalloys, which have significant applications in various industries, especially aviation and energy.
Latest Patents
Chang's latest patents showcase his expertise in superalloy processing and performance enhancement. One notable patent is titled "Supersolvus Processing for Tantalum-Containing Nickel Base Superalloys." This invention introduces a tantalum-containing nickel base superalloy characterized by a remarkably improved maximum tensile strength that remains largely unaffected by the frequency of stress. The innovation involves processing through forging above the gamma prime solvus temperature and subsequent annealing above the recrystallization temperature.
Another significant contribution is the "High-Temperature Fatigue-Resistant Nickel Based Superalloy." This patent details a nickel-based superalloy composition designed to deliver enhanced high-temperature stress-rupture strength and superior resistance to fatigue crack propagation at temperatures up to approximately 760°C. The composition includes particular weight percentages of elements such as chromium, cobalt, molybdenum, tungsten, aluminum, titanium, tantalum, zirconium, boron, and carbon, with nickel being the primary component. Techniques such as thermomechanical processing, isothermal forging, supersolvus annealing, and controlled cooling are covered to achieve an enlarged grain structure, ultimately leading to improved alloy properties.
Career Highlights
Keh-Minn Chang has carved a niche for himself at the General Electric Company, where he applies his extensive knowledge in material science to innovate and refine nickel-based superalloys. His contributions not only advance the capabilities of these materials but also enhance the performance and longevity of products in demanding applications.
Collaborations
Throughout his career, Chang has collaborated with talented individuals, including Shyh-Chin Huang and Alan I. Taub. These collaborations have fostered a rich environment for innovation, enabling the development of cutting-edge technologies that address complex challenges in materials engineering.
Conclusion
Keh-Minn Chang exemplifies the spirit of innovation in the field of materials science, particularly through his advancements in nickel-based superalloys. With an impressive number of patents and ongoing contributions to the General Electric Company, Chang continues to drive progress in high-performance alloys, addressing the growing needs of various industries while paving the way for future innovations.
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.