logo

For the Inventor, By the Inventor

Katsuta, Japan

Kazuhiko Kumata

This inventor holds 9 USPTO granted patents. Top assignee: Hitachi, Ltd.. Active years: 1988-2000.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazuhiko Kumata. Retrieved from https://idiyas.com/inventor/kazuhiko-kumata

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 = 4.7

ph-index = 8

Forward Citations = 164(Granted Patents)


Location History:

  • Katsuta, JP (1988 - 1994)
  • Hitachinaka, JP (2000)

Company Filing History:

goldMedal9 out of 42,731 
 
Hitachi, Ltd.
 patents

Years Active: 1988-2000

Loading Chart...
9 patents (USPTO):Explore Patents
1. 6077615 - Gas turbine nozzle, power generation gas turbine, co-base alloy and (2000-06-20),
2. 5319919 - Method for controlling gas turbine combustor (1994-06-14),
3. 5281129 - Combustion apparatus and control method therefor (1994-01-25),
4. 5272637 - Method and apparatus for controlling the supply of fuel to a gas turbine (1993-12-21),
5. 5259182 - Combustion apparatus and combustion method therein (1993-11-09),
6. 5239831 - Burner having one or more eddy generating devices (1993-08-31),
7. 4967552 - Method and apparatus for controlling temperatures of turbine casing and (1990-11-06),
8. 4872312 - Gas turbine combustion apparatus (1989-10-10),
9. 4767259 - Cooling air flow controlling apparatus for gas turbine (1988-08-30),

Title: Kazuhiko Kumata: Innovator in Gas Turbine Technology

Introduction

Kazuhiko Kumata is a prominent inventor based in Katsuta, Japan. With a total of nine patents to his name, he has made significant contributions to the field of gas turbine technology. His innovative spirit and technical expertise are reflected in his latest inventions, which cater to the advancement of power generation practices.

Latest Patents

Kumata's most recent patents highlight his dedication to improving gas turbine efficiency and reliability. One of his notable inventions is a gas turbine nozzle designed with a crack repair mechanism utilizing a multi-layer weld made from a specialized Co-base alloy. This alloy, consisting of specific weight percentages of elements such as carbon, chromium, nickel, tungsten, tantalum, and zirconium, is used as a robust welding material. Furthermore, he has developed a comprehensive method for controlling gas turbine combustors, which adjusts the fuel-to-air flow ratio according to various operational states. This innovation aims to enhance combustion efficiency, thereby optimizing the overall performance of gas turbines in power generation.

Career Highlights

Currently, Kazuhiko Kumata is associated with Hitachi, Ltd., a leading company known for its commitment to advancing technology and engineering solutions. His work has not only resulted in valuable patents but has also positioned him as a key player in the field of gas turbine innovations.

Collaborations

In his journey as an inventor, Kumata has collaborated with esteemed colleagues Nobuyuki Iizuka and Michio Kuroda. Through teamwork and shared expertise, they have pursued innovative solutions that address the challenges faced in gas turbine technology.

Conclusion

Kazuhiko Kumata's contributions to the field of gas turbines exemplify the impact of innovative thinking in energy technology. With a track record of nine patents and collaborative projects at Hitachi, he continues to shape the future of power generation, showcasing the importance of dedicated inventors in our pursuit of efficient energy solutions.

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]
Loading…