Location History:
- Susono, JP (2002 - 2006)
- Nishikamo, JP (2006)
- Nishikamo-gun, JP (2004 - 2008)
- Aichi, JP (2008)
- Aichi-ken, JP (2006 - 2009)
- Miyoshi, JP (2013)
Company Filing History:
16 out of 36,653 
4 out of 19,733 
1 out of 832,843 Years Active: 2002-2013
Title: **Keizo Hiraku: A Pioneer in Exhaust Gas Purification and Engine Control Innovations**
Introduction
Keizo Hiraku, an influential inventor based in Nishikamo-gun, Japan, has made significant contributions to the field of automotive technology, particularly in exhaust gas purification and internal combustion engine control. With a remarkable portfolio of 17 patents, Hiraku’s innovations are paving the way for cleaner and more efficient vehicle operations.
Latest Patents
Hiraku's latest patents showcase his expertise in developing advanced catalyst technologies and engine control systems. One of his notable inventions is the **Exhaust Gas Purification Catalyst**. This innovative catalyst incorporates a lower layer made of a ceria-zirconia mixed oxide, which contains 50 to 70 mass % of CeO and at least 5 mass % of PrO, coupled with precious metals such as Pt and Pd. The upper layer consists of zirconia and carries Rh, optimizing the purification process by suppressing the formation of harmful substances and enhancing oxygen adsorption capabilities.
Another significant patent by Hiraku is the **Apparatus and Method for Controlling Idle Speed of Internal Combustion Engine**. This invention focuses on an engine design that includes a variable valve actuation mechanism, allowing for the adjustment of lift characteristics of the intake valve. The idle speed control apparatus intelligently monitors and adjusts the intake air amount during idling, ensuring that the engine maintains the desired speed efficiently.
Career Highlights
Keizo Hiraku has built a solid career in the automotive industry, working for esteemed companies such as Toyota Jidosha Kabushiki Kaisha and Denso Corporation. His tenure at these organizations has provided him with a platform to develop and refine his innovative ideas, which have been instrumental in advancing vehicle technology.
Collaborations
Throughout his career, Hiraku has collaborated with distinguished professionals, including Hideki Suzuki and Hirohiko Yamada. These partnerships have not only fueled his creativity but have also led to the successful realization of groundbreaking automotive solutions that address critical environmental concerns and enhance engine performance.
Conclusion
Keizo Hiraku stands out as a pivotal figure in the realm of automotive innovation, with 17 patents that emphasize his commitment to advancing exhaust gas purification and engine performance technologies. His work continues to inspire future advancements in the industry, positioning him as a key contributor to a more sustainable automotive future.