Location History:
- Kure, JP (1979 - 1999)
- Hiroshima, JP (1980 - 2000)
Company Filing History:
11 out of 4,676 
4 out of 264 
1 out of 21,351 
Years Active: 1979-2000
Title: The Innovations of Tadataka Nakazumi
Introduction
Tadataka Nakazumi is a prominent inventor based in Hiroshima, Japan. He has made significant contributions to the field of engine technology, holding a total of 15 patents. His work primarily focuses on exhaust gas purification systems, which are crucial for reducing harmful emissions from engines.
Latest Patents
One of Nakazumi's latest patents is an exhaust gas purifying system for engines. This innovative system includes an exhaust gas purifying catalyst that features a nitrogen oxide absorbing material. It is designed to be installed in the exhaust line of an engine and performs split fuel injection. This method injects fuel directly into each combustion chamber during both the suction and compression strokes, thereby increasing the amount of carbon monoxide supplied to the nitrogen oxide absorbing material. This process effectively desorbs sulfur oxides from the nitrogen oxide absorbing material.
Another notable patent is a method of and system for purifying exhaust gas for engines. This invention raises the exhaust gas temperature after a cold engine start to rapidly activate a catalyst in the exhaust line. It achieves this by retarding the ignition timing of the air-fuel mixture to a point after top-dead-center during a specific time interval. This promotes combustion of the air-fuel mixture, accelerating the catalyst to reach its effective activation temperature as quickly as possible after a cold start.
Career Highlights
Throughout his career, Nakazumi has worked with notable companies such as Mazda Motor Corporation and Toyo Kogyo Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in engine technology.
Collaborations
Some of Nakazumi's coworkers include Tadashi Kaneko and Makoto Hotate. Their collaboration has likely contributed to the advancements in the technologies he has developed.
Conclusion
Tadataka Nakazumi's contributions to engine technology through his patents demonstrate his commitment to innovation and environmental sustainability. His work continues to influence the automotive industry and improve air quality.
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.