Location History:
- Niigata-ken, JP (1998)
- Kashiwazaki, JP (1985 - 2006)
Company Filing History:
3 out of 219 
1 out of 10,092 
Years Active: 1985-2006
Title: Innovations of Hiroshi Miida
Introduction
Hiroshi Miida is a notable inventor based in Niigata-ken, Japan. He has made significant contributions to the field of engineering, particularly in the development of piston rings and solenoid valves. With a total of three patents to his name, Miida's work reflects a commitment to innovation and practical solutions in mechanical design.
Latest Patents
One of Miida's latest patents is a manufacturing method for piston rings. This method addresses wear issues at the butt ends of ion plating film-coated piston rings and aims to reduce breakage while keeping manufacturing costs low. The innovation involves increasing the thickness of the film at the butt ends compared to the rest of the outer surface. Additionally, piston ring blanks are rotated towards an evaporation source, with a speed reduction when the butt ends face the source.
Another significant patent is related to a solenoid valve used in control fluid applications. This invention features a center pole with one end covered by the housing's end face. A communication passage is designed to connect the center pole's through hole with an opening on the housing side of the plunger. The design includes an end face groove and at least one side face groove, ensuring that the volume of the side face groove is larger than the volume variation caused by the plunger's movement. This design effectively prevents impurities from accumulating between the center pole and the plunger.
Career Highlights
Throughout his career, Miida has worked with prominent companies such as Kabushiki Kaisha Riken and Honda Giken Kogyo Kabushiki Kaisha. His experience in these organizations has contributed to his expertise in mechanical engineering and innovation.
Collaborations
Miida has collaborated with notable coworkers, including Ko Chiba and Yoshiaki Wada. Their combined efforts have likely fostered a creative environment that encourages the development of innovative solutions.
Conclusion
Hiroshi Miida's contributions to the field of engineering through his patents and collaborations highlight his role as a significant inventor. His work continues to influence the design and manufacturing processes in mechanical applications.