Company Filing History:

15 out of 42,508

Hitachi, Ltd.

patents

3 out of 203

Hitachi Media Electronics Co., Ltd.

patents

1 out of 832,880

Other

patents

where one patent can have more than one assignee

Years Active: 1980-2011

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17 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7965594 - Optical pickup and optical disc apparatus (2011-06-21),

2. 7400568 - Optical device, optical pickup and optical disk apparatus (2008-07-15),

3. 6388976 - Compact optical head including two light emitters having parallel optical axes (2002-05-14),

4. 6069862 - Compact optical head including two light emitters having parallel (2000-05-30),

5. 5933407 - Structure for supporting optical pickup (1999-08-03),

6. 5872761 - Optical disk apparatus and optical head thereof (1999-02-16),

7. 5699341 - Optical disk apparatus and optical head thereof (1997-12-16),

8. 5615204 - Structure for supporting optical pickup (1997-03-25),

9. 4779255 - Optical reading/reproducing apparatus (1988-10-18),

10. 4744069 - Optical disc apparatus with access system having object lens control (1988-05-10),

11. 4547871 - Two dimensional actuator for moving optical medium of scanning device (1985-10-15),

12. 4532619 - Method and apparatus for reducing semiconductor laser optical noise (1985-07-30),

13. 4525823 - Optical tracking system (1985-06-25),

14. 4411500 - Optical system for reproducing information (1983-10-25),

15. 4352981 - Photoelectric focus and tracking apparatus (1982-10-05),

Title: Toshio Sugiyama: Innovator in Optical Technology

Introduction

Toshio Sugiyama is a prominent inventor based in Toyokawa, Japan. He has made significant contributions to the field of optical technology, holding a total of 17 patents. His work primarily focuses on optical pickup and optical disc apparatus, which are essential for data storage and retrieval.

Latest Patents

Among his latest patents, Sugiyama has developed innovative solutions to enhance the performance of optical devices. One notable patent addresses the challenges faced when recording or reproducing optical discs with multi-layer structures. This invention aims to suppress unwanted disturbances that can degrade the quality of tracking control signals. Another significant patent involves an optical device where an optical component and multiple light-emitting elements are integrated on a single substrate. This design improves the efficiency and functionality of optical systems.

Career Highlights

Throughout his career, Sugiyama has worked with leading companies in the technology sector, including Hitachi, Ltd. and Hitachi Media Electronics Co., Ltd. His experience in these organizations has allowed him to refine his expertise in optical technologies and contribute to various advancements in the field.

Collaborations

Sugiyama has collaborated with notable colleagues such as Hideo Suenaga and Yukio Fukui. These partnerships have fostered innovation and have been instrumental in the development of cutting-edge optical technologies.

Conclusion

Toshio Sugiyama's contributions to optical technology have significantly impacted the industry. His innovative patents and collaborations with esteemed colleagues highlight his dedication to advancing optical systems. His work continues to influence the future of data storage and retrieval technologies.

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