Location History:
- Aichi-gun, JP (1999)
- Nisshin, JP (2012)
- Nissin, JP (2012 - 2013)
Company Filing History:
5 out of 36,499 
2 out of 1,138 
1 out of 11 Years Active: 1999-2013
Title: Kazuhiko Dohmae: Innovator in Exhaust Gas Purification Technologies
Introduction
Kazuhiko Dohmae is a notable inventor based in Nissin, Japan. He has made significant contributions to the field of exhaust gas purification, holding a total of 5 patents. His innovative approaches have advanced the efficiency and effectiveness of catalytic processes in automotive applications.
Latest Patents
Dohmae's latest patents include an "Apparatus and method for regenerating catalyst for purifying exhaust gas." This regeneration apparatus features a heater that heats a catalyst during the engine's fuel supply stoppage. It also includes a pump that supplies either an oxidizing gas or a reducing gas to the heated catalyst, along with a switching valve. During the oxidizing step, catalytic poisons, such as hydrocarbons absorbed on noble metals, are oxidized and removed. The noble metal particles are transformed into oxidized particles, such as pure oxides. Following this, a reducing step is performed, where the noble metal particles are reduced and re-dispersed on the support, resulting in finer particles. This process allows for the regeneration of a deteriorated catalyst without interrupting its use or affecting drivability.
Another significant patent is related to a "Metal oxide catalyst carrier particle and exhaust gas purification catalyst." This invention describes a metal oxide catalyst carrier particle with a center portion and an outer skin portion, each containing different compositions of first and second metal oxides. The mole fraction of the first metal oxide is higher in the center than in the outer skin, while the second metal oxide is more prevalent in the outer skin. The second metal oxide is selected from rare earth oxides, excluding ceria, and alkali earth metal oxides. Platinum is supported on this metal oxide catalyst carrier particle, forming an effective exhaust gas purification catalyst.
Career Highlights
Kazuhiko Dohmae has worked with prominent companies in the automotive industry, including Toyota Motor Corporation and Toyota Central R&D Labs. His experience in these organizations has allowed him to develop and refine his innovative technologies in exhaust gas purification.
Collaborations
Dohmae has collaborated with notable colleagues such as Toshitaka Tanabe and Yasutaka Nagai. Their combined expertise has contributed to the advancement of technologies in the field.
Conclusion
Kazuhiko Dohmae's contributions to exhaust gas purification
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.