This inventor holds 1 USPTO granted patent. Top assignee: Nok Corporation. Active years: 2026.
Company Filing History:
Years Active: 2026
Title: Hiroka Yamaguchi: Innovator in Sealing Technology
Introduction
Hiroka Yamaguchi is a prominent inventor based in Fukushima, Japan. She has made significant contributions to the field of sealing technology, particularly with her innovative designs that enhance the efficiency and reliability of sealing devices.
Latest Patents
Hiroka Yamaguchi holds 1 patent for her invention of a sealing device. This device features a seal lip that slidably contacts the outer surface of an inside member, effectively sealing liquid within an internal space of an outside member. The design includes a liquid-side inclined surface, an atmosphere-side inclined surface, and a lip edge that extends circumferentially between these surfaces. Additionally, the sealing device incorporates helical ribs that contact the outer surface of the inside member, which incline relative to the lip edge. Each rib consists of a linear portion with parallel side walls and a ship-bottom-shaped portion that curves outward beyond the side walls. The height of each linear portion relative to the atmosphere-side inclined surface ranges from 5 μm to 37 μm.
Career Highlights
Hiroka Yamaguchi is currently employed at Nok Corporation, where she continues to develop innovative sealing solutions. Her work has been instrumental in advancing the technology used in various applications, ensuring that products remain leak-proof and efficient.
Collaborations
Hiroka has collaborated with notable coworkers, including Kokichi Hamamoto and Hideaki Nagahamaya, who have contributed to her research and development efforts.
Conclusion
Hiroka Yamaguchi's contributions to sealing technology exemplify her innovative spirit and dedication to improving product reliability. Her patent for a sealing device showcases her expertise and commitment to advancing engineering solutions.