Company Filing History:
Years Active: 1998-2019
Title: Tsunehisa Onuma: Innovator in Valve Technology
Introduction
Tsunehisa Onuma is a notable inventor based in Fukushima, Japan. He has made significant contributions to the field of valve technology, holding a total of 4 patents. His innovative designs focus on enhancing the functionality and reliability of valve components.
Latest Patents
One of his latest patents is for a valve stem seal that exhibits superior workability in mounting a reinforcing ring to a valve stem guide. This design enables the reinforcing ring to be fixed to the valve stem guide in a stable manner. The cylindrical portion of the seal includes a slit extending linearly in a circumferential direction and a locking protrusion that locks into a recess formed in the valve stem guide. This innovative approach ensures a secure fit and improved performance.
Another significant patent is for lip-type oil seals that feature helical pumping ribs. These oil seals are manufactured by preparing a molded foreproduct and trimming a hat portion to create a sharp sealing edge. The design includes a first section of uniform cross-section and a bilge-shaped second section, which ensures improved initial static and dynamic sealing performance. The second sections achieve satisfactory pumping action even after substantial wear, showcasing the durability of Onuma's designs.
Career Highlights
Tsunehisa Onuma is currently associated with Nok Corporation, where he continues to develop innovative solutions in valve technology. His work has been instrumental in advancing the efficiency and reliability of valve components used in various applications.
Collaborations
Onuma collaborates with talented coworkers, including Hideyuki Furuyama and Hiroki Shishido. Their combined expertise contributes to the innovative environment at Nok Corporation.
Conclusion
Tsunehisa Onuma's contributions to valve technology through his patents reflect his commitment to innovation and excellence. His work continues to influence the industry, making significant strides in the development of reliable valve components.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.