Location History:
- Saitama, JP (2004 - 2011)
- Wako, JP (1999 - 2021)
Company Filing History:
13 out of 21,893 
4 out of 10,092 
Years Active: 1999-2025
Title: Hiroaki Kojima: Innovator in Engine Technology
Introduction
Hiroaki Kojima is a prominent inventor based in Wako, Japan, known for his significant contributions to engine technology. With a total of 17 patents to his name, he has made remarkable advancements in the design and functionality of fuel systems in engine generators.
Latest Patents
Kojima's latest patents include innovative designs aimed at improving the efficiency and safety of fuel tanks. One notable invention is a work machine that prevents pressure variation in a fuel tank, ensuring that liquid fuel does not leak even when the tank is inclined. This design features a first breather passage that opens above the liquid fuel when the engine generator tilts to the right, and a second breather passage for when it tilts to the left. Another significant patent is for a portable engine generator that utilizes a negative pressure fuel cock, which operates using negative pressure from the crank chamber to supply fuel to the engine. This design ensures that the fuel cock remains functional even when the generator is turned over.
Career Highlights
Throughout his career, Kojima has worked with notable companies such as Honda Motor Co., Ltd. and Honda Giken Kogyo Kabushiki Kaisha. His experience in these organizations has allowed him to develop and refine his innovative ideas in engine technology.
Collaborations
Kojima has collaborated with talented individuals in the field, including Masanori Fujinuma and Makoto Yonezawa. Their combined expertise has contributed to the successful development of various projects and patents.
Conclusion
Hiroaki Kojima's work in engine technology showcases his dedication to innovation and problem-solving. His patents reflect a commitment to enhancing the functionality and safety of engine systems, making him a notable figure in the field of engineering.