Company Filing History:
2 out of 2,546 
1 out of 7 Years Active: 1979-1991
Title: Joseph R. Stephens: Innovator in Alloy Technologies
Introduction
Joseph R. Stephens is a notable inventor based in Berea, OH (US), recognized for his contributions to the field of alloy technologies. He holds a total of 3 patents, showcasing his innovative spirit and technical expertise.
Latest Patents
One of his latest patents is focused on niobium-aluminum base alloys that exhibit improved oxidation resistance at high temperatures. This alloy consists of 48%-52% niobium, 36%-42% aluminum, 4%-10% chromium, and a small percentage of silicon and/or tungsten, with tungsten being preferred. The parabolic oxidation rates at 1200°C range from about 0.006 to 0.032 (mg/cm²)²/hr, and these new alloys demonstrate excellent cyclic oxidation resistance. Another significant patent involves a high toughness-high strength iron alloy, which shows remarkable strength and toughness characteristics at cryogenic temperatures. This alloy comprises about 10 to 16 percent by weight nickel, 0.1 to 1.0 percent by weight aluminum, and up to 3 percent by weight copper, with the remainder being iron. The production process includes cold rolling at room temperature followed by heat treatment, resulting in a fracture toughness ranging from 200 to 230 ksi√in and yield strengths up to 230 ksi.
Career Highlights
Throughout his career, Joseph R. Stephens has worked with esteemed organizations, including the United States of America as represented by the Administrator and Sverdrup Technology, Inc. His work has significantly impacted the development of advanced materials.
Collaborations
Joseph has collaborated with notable professionals in his field, including Walter R. Witzke and Mohan G. Hebsur. Their combined expertise has contributed to the advancement of alloy technologies.
Conclusion
Joseph R. Stephens is a distinguished inventor whose work in alloy technologies has led to significant advancements in material science. His innovative patents reflect his commitment to improving the performance and durability of alloys in various applications.
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.