Location History:
- Tokyo, JP (2009)
- Yokohama, JP (2008 - 2012)
Company Filing History:
4 out of 99 
3 out of 38 Years Active: 2008-2012
Title: Daisuke Shirai: Innovator in Exhaust Emission Purification Technology
Introduction
Daisuke Shirai is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of exhaust emission purification technology, holding a total of four patents. His innovative work focuses on reducing harmful emissions from engines, which is crucial for environmental sustainability.
Latest Patents
Shirai's latest patents include an exhaust emission purification apparatus for engines. This invention features a reduction catalyst positioned in the exhaust passage of an engine. A reducing agent is added to the exhaust gas, which reacts with nitrogen oxides (NOx) in the exhaust, catalyzed by the reduction catalyst. Additionally, a member for distributing the exhaust gas, to which the reducing agent has been added, is designed to enhance the reaction process. Another notable patent is an exhaust emission purifying apparatus that incorporates a NOx reduction catalytic converter. This device purifies nitrogen oxides in the exhaust gas using a urea aqueous solution. An injection nozzle directs the urea solution towards the exhaust upstream side of the converter, while fins generate a spiral swirling flow of gas to promote effective mixing and hydrolysis of the urea solution.
Career Highlights
Throughout his career, Daisuke Shirai has worked with notable companies such as Nissan Diesel Motor Co., Ltd. and Tokyo Roki Co., Ltd. His experience in these organizations has contributed to his expertise in developing advanced emission control technologies.
Collaborations
Shirai has collaborated with talented individuals in his field, including Isamu Kanaya and Hitoshi Hiramoto. These partnerships have fostered innovation and the exchange of ideas, further enhancing the impact of his work.
Conclusion
Daisuke Shirai's contributions to exhaust emission purification technology demonstrate his commitment to environmental sustainability and innovation. His patents reflect a deep understanding of engineering principles and a dedication to improving air quality through advanced technology.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.