Company Filing History:
2 out of 13,402 
2 out of 15 
1 out of 40 Years Active: 1982-1992
Title: The Innovative Inventor Junzo Ishimaru: A Pioneer in Sealing Technologies
Introduction: Junzo Ishimaru, an accomplished inventor based in Hiratsuka, Japan, has made significant contributions to the field of sealing technologies. With two patents to his name, Ishimaru has demonstrated expertise in creating innovative solutions that address practical engineering challenges. His inventions are a testament to his inventive spirit and dedication to improving mechanical systems.
Latest Patents: Among his most recent patents is a "Dust Seal for Sliding Type Bush." This innovative dust seal is strategically designed to fit between a stationary section and a movable section. Characteristics of this dust seal include a fitting portion attached to the stationary section, a seal lip that engages the outer circumference of the movable section, and a flexible connector between the fitting and seal lip portions. Notably, this design incorporates an annular projection that keeps the seal in contact with both a flange and the movable section's exterior. This unique feature ensures that the seal lip remains axially stationary relative to the movable component, enhancing reliability in various applications.
Another noteworthy invention is the "Sealing Device with Seal Lips Forming V-Shape." This sealing device utilizes a single rubber seal member with two V-shaped, oppositely directed seal lips that engage a spherical surface. This design is particularly effective as it allows grease to fill the V-shaped space, ensuring optimal sealing performance. Additionally, the outer fitting member is designed to protrude inwardly, securely holding the seal member in place.
Career Highlights: Throughout his career, Junzo Ishimaru has been associated with prestigious companies that align with his innovative pursuits. He has worked at Nissan Motor Company Limited, where his work likely contributed to advancing automotive technologies. He also served at The Keeper Co., Inc., further showcasing his adaptability and expertise in diverse engineering environments.
Collaborations: In the realm of innovation, collaboration can play a crucial role in generating new ideas. Junzo has had the opportunity to work alongside talented individuals such as Takuya Murakami and Toshihiko Kakimoto. Their collective efforts have undoubtedly enriched the inventive environment in which they operated and contributed to the development of impactful technologies.
Conclusion: Junzo Ishimaru stands out as a creative inventor with a remarkable ability to design practical sealing solutions. His patents, particularly the innovative dust seal and sealing device with V-shaped lips, reflect his commitment to advancing engineering principles. As he continues to contribute to this field, one can anticipate further innovations from this resilient inventor from Hiratsuka, Japan.