Katsutoshi Sumitani

Title: Innovations of Katsutoshi Sumitani

Introduction

Katsutoshi Sumitani is a notable inventor based in Amagasaki, Japan. He has made significant contributions to the field of oil well technology, holding two patents that showcase his innovative spirit and technical expertise.

Latest Patents

One of his latest patents is a slim-type threaded joint for oil well pipes. This invention guarantees a joint efficiency sufficient for practical use in deep wells, featuring a decreased joint outer diameter. It also boasts improved bending resistance, compression resistance, and over-torque resistance, making it suitable for use by the side track technique. The integral threaded joint has a joint efficiency of at least 70%, with an outer diameter larger than and at most 1.08 times the outer diameter of the oil well pipe bodies. The threaded portions have a trapezoidal cross-section, with a load flank angle of the threads ranging from 0 to -20 degrees and a stabbing flank angle between 35 to 50 degrees.

Career Highlights

Throughout his career, Katsutoshi Sumitani has demonstrated a commitment to advancing oil well technology. His innovative designs have contributed to the efficiency and safety of oil extraction processes.

Collaborations

Katsutoshi has collaborated with notable coworkers such as Shigeo Nagasaku and Jun Maeda, further enhancing the impact of his inventions.

Conclusion

Katsutoshi Sumitani's contributions to the field of oil well technology through his patents reflect his dedication to innovation and improvement in the industry. His work continues to influence the efficiency and safety of oil extraction methods.