Takeshi Onoue

Title: The Innovations of Takeshi Onoue

Introduction

Takeshi Onoue is a notable inventor based in Katsuta, Japan. He has made significant contributions to the field of uranium dioxide pellet fabrication. With a total of 2 patents, his work has advanced the processes involved in creating these essential materials.

Latest Patents

Onoue's latest patents include a process for UO.sub.2 pellet fabrication that focuses on making uranium dioxide pellets of controlled grain size. This process involves treating 50-500 g/l UO.sub.2 F.sub.2 with NH.sub.3 in two stages to form (NH.sub.4).sub.2 U.sub.2 O.sub.7 precipitate. The NH.sub.3/U molar ratio is carefully controlled between 3-5 in the first stage and between 6-12 in the second stage. The resulting precipitate is then formed into UO.sub.2 pellets with grain sizes ranging from 10 to 100 µm. Another patent details a process of fabricating UO.sub.2 pellets that includes filtering and drying a slurry of ammonium diuranate (ADU) with ammonium fluoride (NH.sub.4 F). This process leads to the formation of ADU powder, which undergoes calcining, reducing, compacting, and sintering treatments to create UO.sub.2 pellets.

Career Highlights

Takeshi Onoue is associated with Mitsubishi Kinzoku Kabushiki Kaisha, where he has been instrumental in developing innovative processes for uranium dioxide pellet fabrication. His expertise in this area has positioned him as a key figure in the industry.

Collaborations

Onoue has collaborated with notable colleagues such as Tadao Yato and Hiroshi Tanaka. Their combined efforts have contributed to advancements in the field of nuclear materials.

Conclusion

Takeshi Onoue's contributions to uranium dioxide pellet fabrication highlight his innovative spirit and dedication to advancing technology in this critical area. His patents reflect a commitment to improving processes that are essential for various applications in the nuclear industry.