Location History:
- Hyogo, JP (1993)
- Tokyo, JP (2001 - 2015)
- Ibaraki, JP (2023)
Company Filing History:
13 out of 21,351 
2 out of 15,844 
2 out of 1,498 
Years Active: 1993-2023
Title: The Innovative Contributions of Hisashi Yokoyama
Introduction: Hisashi Yokoyama, a prominent inventor based in Tokyo, Japan, has made significant advancements in engineering with a remarkable portfolio of 15 patents. His work primarily focuses on enhancing internal combustion engine performance through innovative designs and solutions.
Latest Patents: Among his latest inventions, Yokoyama has developed an air bypass valve device. This device features a case and a valve assembly, united by a unique tenon insertion structure that ensures efficient operation. Another significant contribution is his patent for an exhaust-gas recirculation system. This system enhances exhaust gas flow directionality, isolating introducing passages to optimize the performance of internal combustion engines. These innovations reflect his commitment to improving engine efficiency and reducing emissions.
Career Highlights: Hisashi Yokoyama has had an illustrious career, having worked with notable companies such as Mitsubishi Denki and Mitsubishi Electric Corporation. His expertise and innovative mindset have made him a valuable asset in the technology and engineering sectors.
Collaborations: Throughout his career, Yokoyama has collaborated with esteemed colleagues including Toshihiko Miyake and Yasuhiko Kato. These partnerships have fostered an environment of creativity and shared knowledge, leading to significant innovations in their field.
Conclusion: Hisashi Yokoyama's contributions to engineering and technology through his numerous patents highlight his essential role in advancing internal combustion systems. His dedication to innovation not only underscores his talent as an inventor but also enhances the industry’s efforts towards efficiency and sustainability. As he continues to develop new solutions, his impact on technology will undoubtedly be profound.
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.