Company Filing History:

12 out of 42,485

Hitachi, Ltd.

patents

1 out of 6

Hitachi Nuclear Engineering Co., Ltd.

patents

1 out of 162

Hitachi Engineering Co., Ltd.

patents

where one patent can have more than one assignee

Years Active: 1986-1997

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12 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5663502 - Method and apparatus for measuring thickness of layer using acoustic (1997-09-02),

2. 5640435 - Fuel assembly and nuclear reactor (1997-06-17),

3. 5617456 - Fuel assembly and nuclear reactor (1997-04-01),

4. 5388132 - Nuclear fuel assembly and core (1995-02-07),

5. 5265139 - Fuel assembly (1993-11-23),

6. 5128098 - Fuel assembly (1992-07-07),

7. 4985199 - Fuel spacer of separate cell type and manufacturing method therefor (1991-01-15),

8. 4842814 - Nuclear reactor fuel assembly (1989-06-27),

9. 4766658 - Method of producing composite nuclear fuel cladding (1988-08-30),

10. 4689091 - Process for producing zirconium-based alloy (1987-08-25),

11. 4678521 - Process for producing zirconium-based alloy and the product thereof (1987-07-07),

12. 4627148 - Method of producing high-purity metal member (1986-12-09),

Title: Hajime Umehara: Innovator in Measurement and Nuclear Technology

Introduction

Hajime Umehara is a distinguished inventor based in Katsuta, Japan. He has made significant contributions to the fields of measurement technology and nuclear engineering. With a total of 12 patents to his name, Umehara's work has had a profound impact on various industries.

Latest Patents

Umehara's latest patents include a method and apparatus for measuring the thickness of a layer using acoustic waves. This innovative technology involves transmitting ultrasonic waves from a device to an object, where surface reflected waves are converted into electric signals. A feature extracting part analyzes the received signals to determine the thickness of an oxidation layer on a tube. Another notable patent focuses on fuel assembly and nuclear reactors. This invention describes a fuel supporting portion that includes coolant paths designed to optimize the flow of coolant between fuel rods, enhancing the efficiency of nuclear reactors.

Career Highlights

Throughout his career, Umehara has worked with prominent companies such as Hitachi, Ltd. and Hitachi Nuclear Engineering Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to advancements in technology and engineering.

Collaborations

Umehara has collaborated with notable colleagues, including Masahisa Inagaki and Junjiro Nakajima. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Hajime Umehara's contributions to measurement technology and nuclear engineering exemplify the spirit of innovation. His patents and collaborations reflect a commitment to advancing technology for the betterment of society.

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