This inventor holds 7 USPTO granted patents and 1 published patent application and 4 EPO patents. Top assignees: Kabushiki Kaisha Riken, Nissan Motor Company Limited, Nissin Electric Co., Ltd.. Active years: 2007-2019.
Location History:
- Niigata-ken, JP (2007 - 2012)
- Kashiwazaki, JP (2012 - 2017)
- Niigata, JP (2018 - 2019)
Company Filing History:
7 out of 220 
1 out of 13,420 
1 out of 173 Years Active: 2007-2019
Title: Katsuhiro Tsuji: Innovator in Coated Materials
Introduction
Katsuhiro Tsuji is a notable inventor based in Niigata, Japan. He has made significant contributions to the field of coated materials, holding a total of 7 patents. His work primarily focuses on enhancing the performance and durability of mechanical components through innovative coatings.
Latest Patents
Among his latest patents, Tsuji has developed a coated sliding member designed for environments where it comes into contact with lubricants. This invention features a base material with a first hard carbon layer, which is formed using a vacuum arc method and consists of diamond-like carbon. This layer contains substantially no hydrogen and is configured solely of carbon. Additionally, a second hard carbon layer is applied on top of the first layer, also created through a vacuum arc method, but this layer includes nitrogen and has a thickness that is 3 to 35% of the first layer's thickness. Another significant invention is a piston ring that exhibits excellent abrasion resistance against aluminum alloy cylinders. This piston ring features a hard carbon coating on its outer surface, which contains a specific percentage of tungsten to enhance its durability.
Career Highlights
Throughout his career, Katsuhiro Tsuji has worked with prominent companies such as Kabushiki Kaisha Riken and Nissan Motor Company Limited. His experience in these organizations has allowed him to refine his expertise in materials science and engineering.
Collaborations
Tsuji has collaborated with notable colleagues, including Masaki Moronuki and Minoru Kawanishi. These partnerships have contributed to the advancement of his innovative projects and patents.
Conclusion
Katsuhiro Tsuji's contributions to the field of coated materials demonstrate his commitment to innovation and excellence. His patents reflect a deep understanding of material properties and their applications in mechanical engineering.