Company Filing History:
Years Active: 1995-2001
Title: Innovations of Hidefumi Kajiwara
Introduction
Hidefumi Kajiwara is a notable inventor based in Katsuta, Japan. He has made significant contributions to the field of engineering, particularly in the development of steam turbines. With a total of 5 patents to his name, Kajiwara's work reflects a commitment to advancing technology and improving efficiency in energy systems.
Latest Patents
Kajiwara's latest patents include a steam turbine and a rotor shaft designed to enhance performance and durability. The steam turbine features a rotor shaft that integrates high and low-pressure portions, equipped with blades that are at least 30 inches long. The first stage blades operate at a steam temperature of 530°C, and the rotor shaft's length-to-diameter ratio (L/D) is between 1.4 and 2.3. The rotor shaft is constructed from heat-resisting steel, which contains specific weight percentages of various elements, including carbon, silicon, manganese, nickel, chromium, molybdenum, and vanadium. This innovative material composition may also include rare earth elements and other alloys to further enhance its properties.
Career Highlights
Kajiwara is associated with Hitachi, Ltd., a leading company in technology and engineering. His work at Hitachi has allowed him to contribute to groundbreaking projects and innovations in the energy sector. His expertise in steam turbine technology has positioned him as a key figure in the industry.
Collaborations
Kajiwara has collaborated with notable coworkers, including Masao Siga and Yutaka Fukui. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.
Conclusion
Hidefumi Kajiwara's contributions to steam turbine technology exemplify his dedication to innovation and engineering excellence. His patents and collaborations reflect a significant impact on the industry, paving the way for future advancements.