Company Filing History:

24 out of 42,508

Hitachi, Ltd.

patents

4 out of 227

Hitachi Global Storage Technologies Japan, Ltd.

patents

Years Active: 1981-2010

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28 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7643245 - Magnetic disc unit with gap between magnetic disc and shroud (2010-01-05),

2. 7336440 - Magnetic disc unit with gap between magnetic disc and shroud (2008-02-26),

3. 7330334 - Magnetic disk apparatus with shroud and having open space downstream of moveable arms in communication with bypass channel (2008-02-12),

4. 7072141 - Magnetic disc unit with range of gap between disc and shroud (2006-07-04),

5. 6898049 - Magnetic disk apparatus with air flow bypass channel (2005-05-24),

6. 6751050 - Magnetic disc unit (2004-06-15),

7. 6665139 - Magnetic-disc unit with gap between disc and shroud (2003-12-16),

8. 6600626 - Magnetic disk apparatus (2003-07-29),

9. 5390059 - Flying head slider supporting mechanism having active air pressure (1995-02-14),

10. 5251083 - Flying head slider and method of producing the same (1993-10-05),

11. 5245489 - Guide arm with a fixed printed circuit board for magnetic disk drive (1993-09-14),

12. 5243482 - Floating type magnetic head supporting assembly including a coupling to (1993-09-07),

13. 5223998 - Magnetic head slider unit having a float slider and magnetic head (1993-06-29),

14. 5177652 - Dual-actuator transducer position control apparatus for seeking and (1993-01-05),

15. 5140482 - Guide arm with affixed printed circuit board for magnetic disk drive (1992-08-18),

Title: Innovations of Yuzo Yamaguchi: A Pioneer in Magnetic Disc Technology

Introduction: Yuzo Yamaguchi, based in Tsuchiura, Japan, is a notable inventor with a remarkable portfolio comprising 28 patents. His contributions to the field of magnetic disc technology have influenced various applications in data storage and retrieval systems. With extensive experience working for renowned companies, Yamaguchi's innovations continue to impact the industry.

Latest Patents: Among Yamaguchi's latest inventions is a magnetic disc unit designed to enhance the performance of disc drives. One of his key patents outlines a magnetic disc unit featuring a specific gap between the magnetic disc and the shroud. This magnetic disc unit includes a rotating disc type magnetic disc and a head for recording and reproducing data. The design incorporates a shroud surrounding the magnetic disc while maintaining a precise gap of not less than 0.1 mm and not greater than 0.4 mm between the end face of the disc and the shroud. Another patent elaborates on a similar magnetic disc unit, which emphasizes the importance of the gap being maintained between 0.1 mm and 0.6 mm, optimizing the interaction between the components.

Career Highlights: Yuzo Yamaguchi has had an illustrious career, contributing his expertise to prominent companies such as Hitachi, Ltd. and Hitachi Global Storage Technologies Japan, Ltd. His roles at these firms have undoubtedly played a significant part in shaping his innovative approach to magnetic storage technology.

Collaborations: Throughout his career, Yamaguchi has collaborated with esteemed colleagues, including Mikio Tokuyama and Yoshinori Takeuchi. These partnerships have likely fostered a creative environment that supports groundbreaking innovations in magnetic disc units.

Conclusion: Yuzo Yamaguchi's significant contributions to magnetic disc technology are reflected in his impressive patent portfolio. His innovative designs and collaborative efforts have not only advanced the field but also served as a testament to his skills as a leading inventor in today's technology landscape. As new challenges arise within data storage, Yamaguchi's work will likely pave the way for future innovations.

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