Company Filing History:

7 out of 35,734

Nec Corporation

Years Active: 1995-2006

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14 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7007292 - Disk cartridge device operative with disk cartridges of different sizes and height (2006-02-28),

2. 6741537 - Disk cartridge device operative with disk cartridges of different sizes and height (2004-05-25),

3. 6700851 - Disk cartridge device for universally mounting and positioning disk cartridges having disks of different size diameters (2004-03-02),

4. 6633529 - Disk drive and sealing member (2003-10-14),

5. 6603725 - Disk cartridge apparatus (2003-08-05),

6. 6538984 - Disk cartridge and disk cartridge loading method (2003-03-25),

7. 6490124 - Member for removing foreign particles within a cartridge storing space of a disk cartridge to be inserted into/removed from a disk drive apparatus (2002-12-03),

8. 5636083 - Magnetic disk assembly (1997-06-03),

9. 5473489 - Magnetic head positioner for a magnetic disk apparatus minimizing (1995-12-05),

10. 5469315 - Magnetic head positioner for a magnetic disk apparatus with low load (1995-11-21),

11. 5461268 - Spindle motor for a magnetic disk drive (1995-10-24),

12. 5446608 - Magnetic head positioner for a magnetic disk apparatus (1995-08-29),

13. 5440437 - Magnetic head arm having thermal compensation member for correcting (1995-08-08),

14. 5379169 - Magnetic disk drive spindle motor having plates to shield the motor (1995-01-03),

Title: Yotaro Sanada: Innovator in Disk Cartridge Technology

Introduction

Yotaro Sanada is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of disk cartridge technology, holding a total of 14 patents. His innovative designs have paved the way for advancements in how disk cartridges are utilized and managed.

Latest Patents

One of Sanada's latest patents is a disk cartridge device that operates with disk cartridges of different sizes and heights. This device includes first and second disk cartridges designed to house disks of varying diameters. The cassette compartment allows for the selective loading of these cartridges, featuring a pair of positioning pins with height-deciding bases. This design ensures that both the first and second disk cartridges are properly placed. The first disk cartridge is equipped with stepped escape holes on its lower surface, enabling it to escape from the positioning pins when the second disk cartridge is correctly positioned. This innovative mechanism enhances the functionality and versatility of disk cartridge devices.

Career Highlights

Throughout his career, Yotaro Sanada has worked with notable companies such as NEC Corporation and Sony Corporation. His experience in these leading technology firms has contributed to his expertise in developing cutting-edge inventions.

Collaborations

Sanada has collaborated with talented individuals in the industry, including Yoshio Kusui and Naohiro Netsu. These partnerships have fostered a creative environment that has led to the development of innovative technologies.

Conclusion

Yotaro Sanada's contributions to disk cartridge technology exemplify his innovative spirit and dedication to advancing the field. His patents and collaborations reflect a commitment to enhancing the functionality of disk storage solutions.

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