This inventor holds 8 USPTO granted patents. Top assignees: Teikoku Piston Ring Co., Ltd., Taisei Kensetsu Kabushiki Kaisha, Toyota Jidosha Kogyo Kabushiki Kaisha. Active years: 1977-2000.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Okaya, JA (1977)
- Nagano, JP (1995)
- Okaya, JP (1978 - 2000)
Company Filing History:
8 out of 70 
1 out of 10 
1 out of 1,838 Years Active: 1977-2000
Title: Akira Harayama: Innovator in Composite Chromium Plating Technology
Introduction
Akira Harayama is a notable inventor based in Okaya, Japan, recognized for his contributions to the field of materials engineering. With a total of eight patents to his name, Harayama has made significant advancements in the development of composite chromium plating films, particularly in applications related to piston rings.
Latest Patents
Harayama's latest patents include innovative designs for composite chromium plating films and sliding members covered thereof. One of his patents describes a piston ring that features a nitrided layer over all surfaces, with a composite chromium plating film applied to the outer circumferential surface. This film is characterized by a network of cracks on both the outer surface and interior, where spherical alumina particles are embedded. The average size of these particles ranges from 0.7 to 10 micrometers, with a dispersion ratio of 3 to 15 percent by volume. Another patent outlines a similar piston ring design, but instead incorporates Si3N4 particles within the cracks, with an average size of 0.8 to 3 micrometers and the same dispersion ratio.
Career Highlights
Throughout his career, Harayama has worked with prominent companies such as Teikoku Piston Ring Co., Ltd. and Toyota Jidosha Kogyo Kabushiki Kaisha. His experience in these organizations has allowed him to refine his expertise in materials science and engineering, leading to his innovative patent developments.
Collaborations
Harayama has collaborated with several professionals in his field, including Toshiaki Imai and Kazuyoshi Aruga. These partnerships have contributed to the advancement of his research and the successful implementation of his patented technologies.
Conclusion
Akira Harayama's work in composite chromium plating technology has positioned him as a key figure in materials engineering. His innovative patents and collaborations reflect his commitment to advancing the field and improving the performance of mechanical components.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile