This inventor holds 21 USPTO granted patents, primarily in Electrical Protection Devices. Top assignees: Mitsubishi Denki Kabushiki Kaisha, Mitsubishi Denki Engineering Kabushiki Kaisha, Mitsubishi Denki K.k.. Active years: 1984-1998.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Kasugai, JP (1987)
- Aichi, JP (1987 - 1996)
- Nagoya, JP (1984 - 1998)
Company Filing History:


Years Active: 1984-1998
Areas of Expertise:
Title: Innovations by Yuji Sako: A Pioneer in Overcurrent Relay Technology
Introduction: Yuji Sako, based in Aichi, Japan, is a prolific inventor with an impressive portfolio of 21 patents. His work primarily focuses on innovations in electrical engineering, particularly in the field of overcurrent relays. His inventions enhance safety and functionality in electrical systems, demonstrating his commitment to advancing technology.
Latest Patents: Among Yuji Sako's latest patents is an innovative overcurrent relay featuring a bimetal resetting member. This design incorporates an accelerating mechanism that enhances the speed of operation of a resetting bar and the motion in a normally closed contact when activated by the resetting bar. This development eliminates hazardous abnormal operations by ensuring that resetting operations do not become trapped in a toggle mechanism, thereby significantly improving the safety of the resetting mechanism.
Another notable patent is for a magnetic coil assembly equipped with a surge absorber. This assembly features a unique connector arrangement that prevents potential accidents stemming from mismatched voltage ratings between the surge absorber and the magnetic coil. This design allows for easy replacement of the surge absorber if damaged and simplifies the automated assembly process, further ensuring reliable operation of electrical devices.
Career Highlights: Yuji Sako has made significant contributions during his tenure at renowned organizations such as Mitsubishi Electric Corporation and Mitsubishi Electric Engineering Corporation. His experience in these companies has undoubtedly shaped his innovative approach and technical expertise, enabling him to create advanced solutions that address real-world challenges in electronic engineering.
Collaborations: Throughout his career, Yuji Sako has collaborated with esteemed professionals in the field, including Hiroyuki Okado and Shigeharu Ootsuka. These partnerships have fostered a collaborative environment for innovation, bringing together diverse insights and experiences to drive advancements in electrical technology.
Conclusion: Yuji Sako's contributions to the field of electrical engineering, particularly with his patents on overcurrent relays and magnetic coil assemblies, clearly highlight his role as a leading innovator. His inventions not only enhance safety in electrical operations but also set a standard for future advancements in technology. As he continues to develop new ideas, Yuji Sako remains an inspirational figure in the realm of inventions and innovations.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile