This inventor holds 17 USPTO granted patents, plus 1 CIPO patent and 10 EPO patents. Top assignees: Toyota Jidosha Kabushiki Kaisha, Tokyo Shibaura Denki Kabushiki Kaisha, Toyota Jidoshi Kabushiki Kaisha. Active years: 1983-2015.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Mishima, JP (2010)
- Sunto-gun, JP (2009 - 2013)
- Yokohama, JP (1983 - 2015)
Company Filing History:


Years Active: 1983-2015
Title: Akio Koyama: Innovator in Exhaust Gas Purification
Introduction
Akio Koyama is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of exhaust gas purification, holding a total of 17 patents. His innovative work focuses on developing catalysts that enhance the efficiency of exhaust gas treatment.
Latest Patents
Koyama's latest patents include an exhaust gas purifying catalyst. This catalyst features a porous silica support that comprises silica with a specific pore structure. It also includes a perovskite-type composite metal oxide particle supported within the porous silica. The design ensures that the peak attributable to the space between silica primary particles falls within the range of 3 to 100 nm in the pore distribution. Another notable patent is for a porous composite oxide, which consists of an aggregate of secondary particles formed from primary particles of a composite oxide containing multiple metal elements. This composite oxide has mesopores with diameters ranging from 2 to 100 nm, with at least 10% of the mesopores being 10 nm or larger after firing for 5 hours at 600°C in an oxygen atmosphere.
Career Highlights
Throughout his career, Koyama has worked with notable companies, including Toyota Motor Corporation and Tokyo Shibaura Electric Co., Ltd. His experience in these organizations has allowed him to apply his innovative ideas in practical settings, contributing to advancements in automotive technology and environmental sustainability.
Collaborations
Koyama has collaborated with esteemed colleagues such as Shinichi Takeshima and Kohei Yoshida. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies in the field of exhaust gas purification.
Conclusion
Akio Koyama's contributions to the field of exhaust gas purification through his innovative patents and collaborations highlight his role as a key inventor in this area. His work continues to influence advancements in environmental technology and automotive engineering.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile