This inventor holds 40 USPTO granted patents and 1 published patent application and 5 EPO patents, primarily in Zinc-Based Coatings. Top assignees: Hitachi, Ltd., Ricoh Company, Ltd., Takata Corporation. Active years: 1986-2023.
Location History:
- Omiya, JP (1996)
- Kawasaki, JP (2002)
- Kodaira, JP (2004)
- Shiga, JP (2002 - 2005)
- Hitachi, JP (1986 - 2006)
- Ibaraki, JP (2006 - 2007)
- Fuchu, JP (2004 - 2008)
- Hikone, JP (2008)
- Yokohama, JP (2010)
- Ebina, JP (2011)
- Machida, JP (2013)
- Kanagawa, JP (2009 - 2015)
- Tokyo, JP (1993 - 2021)
- Chiyoda-ku, JP (2023)
Company Filing History:
13 out of 42,726Â 
13 out of 28,934Â 
6 out of 1,161Â 
Years Active: 1986-2023
Areas of Expertise:
Title: Hiroshi Kajiyama: Innovator in Steel Coating Technologies
Introduction: Hiroshi Kajiyama, based in Tokyo, Japan, is a prominent inventor known for his significant contributions to the field of steel coating technologies. With a remarkable portfolio of 25 patents, his innovations have set new standards in both surface treatment and manufacturing processes.
Latest Patents: Kajiyama's recent patents highlight his focus on improving the quality and performance of steel sheets. One of his notable inventions is a steel sheet featuring a hot-dip Zn-Al-Mg-based coating film designed to enhance surface appearance. This coating incorporates an optimal blend of aluminum and magnesium, achieving a specific X-ray diffraction peak intensity ratio, ensuring superior performance.
Additionally, he developed a surface-treatment solution for zinc or zinc alloy coated steel sheets. This innovation focuses on creating a surface-coating layer free of chromium compounds, thereby improving various resistance properties, including heat discoloration and corrosion resistance. The formulation includes a combination of glycidyl group-containing silanes, zirconium compounds, and polyurethane resins, tailored for optimal stability and performance.
Career Highlights: Throughout his career, Hiroshi Kajiyama has made substantial contributions while working with esteemed companies like Ricoh Company, Ltd., and Takata Corporation. His advancements in steel manufacturing processes have not only showcased his technical expertise but have also earned him recognition within the industry.
Collaborations: Kajiyama has collaborated with various professionals, among whom are Masayuki Ueda and Hiroyuki Watase. Together, they have contributed to innovative solutions addressing the challenges within materials science and manufacturing.
Conclusion: Hiroshi Kajiyama exemplifies the role of a forward-thinking inventor dedicated to enhancing steel manufacturing through innovative coating technologies. His extensive patent portfolio and collaborative efforts demonstrate his commitment to pushing the boundaries of industrial materials, ultimately contributing to a more resilient and efficient manufacturing landscape.