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Aichi, Japan

Shizutaka Nishizako

This inventor holds 12 USPTO granted patents. Top assignee: Mitsubishi Denki Kabushiki Kaisha. Active years: 1983-1991.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shizutaka Nishizako. Retrieved from https://idiyas.com/inventor/shizutaka-nishizako

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank
USPTO Granted Patents = 12

% Patents Active = 100.0

Average Co-Inventor Count = 3.0

ph-index = 5

Forward Citations = 96(Granted Patents)


Location History:

  • Aichi, JP (1984 - 1987)
  • Tajimi, JP (1984 - 1987)
  • Nagoya, JP (1983 - 1991)

Company Filing History:

goldMedal12 out of 21,351 
 
Mitsubishi Denki Kabushiki Kaisha
 patents

Years Active: 1983-1991

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12 patents (USPTO):Explore Patents
1. 5003137 - Switch (1991-03-26),
2. 4661883 - Electromagnet apparatus with shortened armature release time (1987-04-28),
3. 4654744 - Electromagnetic contactor (1987-03-31),
4. 4652707 - Power switch (1987-03-24),
5. 4628163 - Power switch (1986-12-09),
6. 4616203 - Electromagnetic contactor (1986-10-07),
7. 4612427 - Switch (1986-09-16),
8. 4596909 - Electromagnetic contactor (1986-06-24),
9. 4471178 - Auxiliary circuit breaker (1984-09-11),
10. 4450328 - Electromagnetic contactor means with improved arc runner (1984-05-22),
11. 4436831 - Calcined member for arc-extinguishing chambers (1984-03-13),
12. 4367448 - Direct current electromagnetic contactor (1983-01-04),

Title: Innovations of Shizutaka Nishizako

Introduction

Shizutaka Nishizako is a prominent inventor based in Aichi, Japan. He has made significant contributions to the field of electrical engineering, holding a total of 12 patents. His work primarily focuses on the development of advanced switches and electromagnet apparatuses.

Latest Patents

One of his latest patents is a switch designed for use as an electromagnetic contactor, a circuit breaker for wiring, and an air circuit breaker. This innovative switch features a fixed contact joined to a fixed contactor, a movable contact joined to a movable contactor, and a series of arc extinguishing metallic plates arranged in parallel to enhance performance. The design allows for rapid interruption of large electric currents by effectively attracting arcs to the metallic plates. Another notable patent involves an electromagnet apparatus that reduces armature release time. This device utilizes a d.c. current supplied from a full-wave rectifier to energize a coil, with a transistor and capacitor working together to absorb inductive energy and improve efficiency.

Career Highlights

Shizutaka Nishizako is associated with Mitsubishi Electric Corporation, where he has been instrumental in developing cutting-edge technologies. His expertise in electrical systems has led to numerous advancements in the industry.

Collaborations

He has collaborated with notable coworkers such as Shigeru Masuda and Teijiro Mori, contributing to various projects that enhance the functionality and reliability of electrical devices.

Conclusion

Shizutaka Nishizako's innovative work in electrical engineering has resulted in significant advancements in switch technology and electromagnet systems. His contributions continue to influence the industry and pave the way for future innovations.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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