Company Filing History:

15 out of 42,517

Hitachi, Ltd.

where one patent can have more than one assignee

Years Active: 1980-1994

Loading Chart...

15 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5316597 - A nuclear reactor comprising a reactor vessel and structural members (1994-05-31),

2. 5203984 - Monitoring system for plant operation condition and its in-situ (1993-04-20),

3. 4979995 - Member made of nickel base alloy having high resistance to stress (1990-12-25),

4. 4842814 - Nuclear reactor fuel assembly (1989-06-27),

5. 4810461 - Zirconium-based alloy with high corrosion resistance (1989-03-07),

6. 4718949 - Method of producing a cladding tube for reactor fuel (1988-01-12),

7. 4689091 - Process for producing zirconium-based alloy (1987-08-25),

8. 4678521 - Process for producing zirconium-based alloy and the product thereof (1987-07-07),

9. 4664727 - Zirconium alloy having superior corrosion resistance (1987-05-12),

10. 4560407 - Alloy for use in a radioactive ray environment and reactor core members (1985-12-24),

11. 4512820 - In-pile parts for nuclear reactor and method of heat treatment therefor (1985-04-23),

12. 4348041 - Butt welded tubular structure of austenite stainless steel (1982-09-07),

13. 4234119 - Method of making a structure immune against stress corrosion cracking (1980-11-18),

14. 4223197 - Method of cooling weld in steel piping and apparatus therefor (1980-09-16),

15. 4218604 - Method for welding of austenitic stainless steel piping (1980-08-19),

Title: Isao Masaoka: Innovator in Nuclear Reactor Technology

Introduction

Isao Masaoka is a prominent inventor based in Hitachi, Japan, known for his significant contributions to nuclear reactor technology. With a total of 15 patents to his name, Masaoka has made remarkable advancements in materials and monitoring systems that enhance the safety and efficiency of nuclear plants.

Latest Patents

Masaoka's latest patents include a nuclear reactor design that features a reactor vessel and structural members made of austenitic stainless steel. This innovative material is corrosion-resistant in environments of neutron irradiation, effectively suppressing stress corrosion cracking and embrittlement. The design incorporates specific additives, such as titanium and zirconium, to maintain a wholly austenitic structure that is substantially free of carbide. This approach prevents irradiation-induced segregation of critical elements like chromium and nickel, thereby preserving the material's corrosion resistance and structural integrity.

Another notable patent is a plant operational status monitoring supervisory system. This system utilizes an electrochemical water quality sensor to extract information about water quality in real-time. It evaluates the water quality and compares it with reference values for predetermined plant operation procedures. The system also features a neural network for processing monitored data, achieving a higher precision level in monitoring various conditions within the plant.

Career Highlights

Masaoka has worked with leading companies in the industry, including Hitachi, Ltd. and Hitachi Metals, Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to advancements in nuclear technology.

Collaborations

Throughout his career, Masaoka has collaborated with notable colleagues such as Masahisa Inagaki and Iwao Takase. These partnerships have fostered a collaborative environment that encourages the exchange of ideas and expertise in the field of nuclear engineering.

Conclusion

Isao Masaoka's contributions to nuclear reactor technology and plant monitoring systems have established him as a key figure in the field. His innovative patents reflect a commitment to enhancing safety and efficiency in nuclear energy production.

This text is generated by artificial intelligence and may not be accurate.

Please report any incorrect information to support@idiyas.com