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For the Inventor, By the Inventor

Nagoya, Japan

Eiichi Sugishima

This inventor holds 9 USPTO granted patents. Top assignee: Mitsubishi Denki Kabushiki Kaisha. Active years: 1986-1996.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Eiichi Sugishima. Retrieved from https://idiyas.com/inventor/eiichi-sugishima

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

USPTO Granted Patents = 9

% Patents Active = 100.0

Average Co-Inventor Count = 1.9

ph-index = 8

Forward Citations = 500(Granted Patents)


Location History:

  • Nagoya, JP (1986 - 1993)
  • Aichi, JP (1992 - 1996)

Company Filing History:

goldMedal9 out of 21,351 
 
Mitsubishi Denki Kabushiki Kaisha
 patents

Years Active: 1986-1996

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9 patents (USPTO):Explore Patents
1. 5497289 - Inverter apparatus and method therefor (1996-03-05),
2. 5218523 - Driver circuit for an inverter device with output voltage stabilization (1993-06-08),
3. 5214575 - Ground fault detector for an inverter and a method therefor (1993-05-25),
4. D330701 - Power inverter (1992-11-03),
5. D328058 - Power inverter (1992-07-21),
6. 4819157 - Overcurrent protection circuit for inverter device including majority (1989-04-04),
7. 4745535 - Ringing choke type DC/DC converter (1988-05-17),
8. 4686480 - Wave generation circuit for a pulse-width modulation inverter (1987-08-11),
9. 4628395 - Overload protecting circuit for an inverter device (1986-12-09),

Title: Eiichi Sugishima: Innovator in Inverter Technology

Introduction

Eiichi Sugishima is a prominent inventor based in Nagoya, Japan. He has made significant contributions to the field of inverter technology, holding a total of 9 patents. His work focuses on developing compact and efficient inverter apparatuses that enhance performance and reliability.

Latest Patents

Sugishima's latest patents include an inverter apparatus and a driver circuit for an inverter device with output voltage stabilization. The inverter apparatus features a compact design with a changeable heat sink, allowing for efficient heat management. It includes a power module that converts alternating current into direct current and then back into alternating current of variable frequency. The design incorporates alignment structures for easy disassembly and assembly, ensuring reliability in operation.

The driver circuit for the inverter device includes upper and lower arm driver circuits for controlling IGBTs. This innovative design allows for effective voltage stabilization and includes a current limiter to manage the initial charging current of the capacitor. The circuit can also utilize a pulse generator to optimize the operation of the driver circuits.

Career Highlights

Eiichi Sugishima is associated with Mitsubishi Electric Corporation, where he has contributed to various projects and innovations in inverter technology. His expertise has positioned him as a key figure in the development of advanced electrical systems.

Collaborations

Sugishima has worked alongside notable colleagues such as Hideo Iinuma and Masakatsu Suzuki. Their collaborative efforts have further advanced the field of inverter technology and contributed to the success of their projects.

Conclusion

Eiichi Sugishima's innovative work in inverter technology has led to significant advancements in the field. His patents reflect a commitment to improving efficiency and reliability in electrical systems. Sugishima's contributions continue to influence the industry and inspire 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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