This inventor holds 3 USPTO granted patents and 2 published patent applications, plus 1 CIPO patent. Top assignees: Toyo Engineering Corporation, Sumitomo Metal Industries, Inc.. Active years: 2003-2018.
Company Filing History:
3 out of 171 
1 out of 929 Years Active: 2003-2018
Title: Eiki Nagashima: Innovator in Urea Synthesis Technology
Introduction
Eiki Nagashima is a prominent inventor based in Chiba, Japan. He has made significant contributions to the field of chemical engineering, particularly in urea synthesis methods. With a total of 3 patents to his name, Nagashima's work focuses on enhancing the reliability and productivity of urea synthesis processes.
Latest Patents
One of Nagashima's latest patents is a urea synthesis method that minimizes the amount of oxygen used as a corrosion-resistant agent. This method does not require special duplex stainless steel, making it more accessible for various applications. The urea synthesis apparatus he developed includes a synthesis tower, a stripper, and a condenser, utilizing general-purpose austenitic-ferritic duplex stainless steel with specific chemical compositions to ensure durability against corrosive fluids. Another notable patent involves a duplex stainless steel designed for urea manufacturing plants, which boasts high corrosion resistance and specific material properties to enhance its performance in harsh environments.
Career Highlights
Throughout his career, Eiki Nagashima has worked with reputable companies such as Toyo Engineering Corporation and Sumitomo Metal Industries, Inc. His experience in these organizations has allowed him to refine his expertise in materials science and chemical engineering.
Collaborations
Nagashima has collaborated with notable coworkers, including Yoshimi Yamadera and Toshitsugu Fukai. These partnerships have contributed to the advancement of his innovative projects and patents.
Conclusion
Eiki Nagashima's contributions to urea synthesis technology exemplify his commitment to innovation in chemical engineering. His patents reflect a deep understanding of materials and processes that enhance productivity and reliability in industrial applications.