Company Filing History:

35 out of 42,485

Hitachi, Ltd.

patents

3 out of 73

Chubu Electric Power Company, Inc.

patents

where one patent can have more than one assignee

Years Active: 1981-2003

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35 patents (USPTO):Sort by Forward Citations

Abstract keywords

1. 6538877 - Gas insulation switch (2003-03-25),

2. 6525917 - Power transforming system and method (2003-02-25),

3. 6424162 - Insulated device diagnosing system that prepares detection data from partial discharge signal such that periodic elements are given to different specific frequencies of the partial discharge signal (2002-07-23),

4. 6373687 - Gas insulation switch (2002-04-16),

5. 6292356 - Gas insulation switch (2001-09-18),

6. 6252763 - Gas-insulated electrical apparatus (2001-06-26),

7. 6218627 - Bushing (2001-04-17),

8. 6063997 - Gas insulated electric apparatus (2000-05-16),

9. 6002085 - Gas insulated switchgear (1999-12-14),

10. 5982181 - Insulated device diagnosing system for diagnosing device based upon (1999-11-09),

11. 5929989 - Optical pressure detection method and apparatus (1999-07-27),

12. 5798484 - Enclosed electric conductor arrangement (1998-08-25),

13. 5699219 - Ground fault current limiter and method of limiting ground fault current (1997-12-16),

14. 5689088 - Gas insulated device, gas insulated switchgear, gas insulated bus line, (1997-11-18),

15. 5627941 - Method of configuring a neural network and a diagnosis/control system (1997-05-06),

Title: The Inventor Extraordinaire: Tokio Yamagiwa

Introduction:

Tokio Yamagiwa, a prolific inventor hailing from Hitachi, Japan, has left an indelible mark in the realm of innovations with an impressive portfolio of 35 patents to his name. His groundbreaking work in the field of electrical engineering has revolutionized the way we perceive and utilize energy.

Latest Patents:

Among his recent patents is a Gas Insulation Switch designed to minimize the use of SF gas without compromising on insulation and arc extinguishing performance. This innovative switch incorporates alternative insulating gases like nitrogen or air to enhance efficiency and reduce environmental impact.

Another notable invention is the Power Transforming System and Method, which ensures optimal protection for substations against intense electric shocks. By integrating lightning arresters, ground fault devices, and advanced control systems, this transformative system can effectively safeguard equipment in the face of catastrophic events.

Career Highlights:

Having worked at esteemed organizations such as Hitachi, Ltd. and Chubu Electric Power Company, Inc., Yamagiwa has honed his expertise in the intersection of technology and energy solutions. His contributions have not only strengthened the operational efficiency of these companies but have also propelled the industry towards a more sustainable future.

Collaborations:

Throughout his illustrious career, Yamagiwa has collaborated closely with esteemed colleagues such as Fumihiro Endo and Toshio Ishikawa. Their combined efforts have led to the development of cutting-edge technologies that continue to shape the landscape of electrical engineering.

Conclusion:

In conclusion, Tokio Yamagiwa stands as a visionary inventor whose relentless pursuit of excellence has redefined the boundaries of innovation in the field of electrical engineering. His patents serve as a testament to his ingenuity and unwavering commitment to advancing technological solutions for a brighter tomorrow.

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Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.