Company Filing History:
4 out of 42,508 
2 out of 152 
2 out of 248 
Years Active: 1997-2000
Title: The Innovative Contributions of Masaru Ujigawa
Introduction: Masaru Ujigawa, an accomplished inventor based in Hitachinaka, Japan, has made significant contributions to the field of internal combustion engines through his inventive designs. With four patents to his name, Ujigawa's work exemplifies the fusion of creativity and engineering.
Latest Patents: Ujigawa's recent inventions include an innovative igniter for internal combustion engines. This igniter is designed to reduce the bulk and weight of the upper igniter case division of the armor case. By doing so, it lowers the center of gravity of the entire apparatus, thus providing an igniter that is resilient against oscillation. The igniter features an armor case equipped with a coil compartment and igniter unit. The coil compartment case is strategically inserted into the plug hole of the internal combustion engine, enhancing its functionality. Additionally, the igniter unit incorporates a semiconductor device utilizing a simple silicon chip containing a semiconductor for switching, along with a current limiting circuitry. The switching mechanism includes an insulated bipolar transistor (IGBT) or a power transistor, showcasing Ujigawa's focus on advanced technology and efficiency.
Career Highlights: Masaru Ujigawa has had an impactful career, working with prominent companies such as Hitachi, Ltd. and Hitachi Automotive Engineering Co., Ltd. His tenure at these respected organizations has provided him with valuable experience and a platform for his innovative pursuits.
Collaborations: Throughout his career, Ujigawa has collaborated with notable colleagues, including Takao Terakado and Toshiaki Kaminaga. These partnerships have likely contributed to the refinement and success of his inventive projects.
Conclusion: Masaru Ujigawa's contributions to the field of igniters for internal combustion engines highlight his exemplary skills as an inventor. With his ongoing commitment to innovation and collaboration, Ujigawa continues to be a key figure in advancing engineering design and technology. His inventions underscore the importance of integrating creativity with practical engineering solutions, paving the way for future advancements in the industry.