Company Filing History:

6 out of 42,485

Hitachi, Ltd.

Years Active: 1989-2006

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8 patents (USPTO):Sort by Forward Citations

Abstract keywords

1. 6985505 - Semiconductor laser diode and optical module (2006-01-10),

2. 6931215 - Optical transmitter module (2005-08-16),

3. 6332720 - Semiconductor laser coupling device and method for assembling the same on circuit board (2001-12-25),

4. 5675685 - Optical semiconductor array module, method of fabricating the module, (1997-10-07),

5. 5671316 - Connecting structure of optical fiber to optical waveguide (1997-09-23),

6. 5195155 - Optical coupling apparatus and manufacturing method of the same, and (1993-03-16),

7. 5046798 - Semiconductor light emitting device and apparatus using the same (1991-09-10),

8. 4880290 - Opto-electronic device and method for producing the device (1989-11-14),

Title: Makoto Shimaoka: Innovator in Semiconductor Technology

Introduction

Makoto Shimaoka is a prominent inventor based in Ushiku, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 8 patents. His work focuses on enhancing the reliability and performance of optical devices.

Latest Patents

Shimaoka's latest patents include a highly reliable ridge-waveguide semiconductor laser diode and an optical module. The ridge-waveguide semiconductor laser diode features a unique structure that reduces strain caused by electrode stress, ensuring high reliability. Additionally, he has developed an optical transmitter module that improves performance while reducing manufacturing costs. This module includes an optical semiconductor element and an inline optical isolator, allowing for stable laser transmission.

Career Highlights

Throughout his career, Shimaoka has worked with notable companies such as Hitachi, Ltd. and Hitachi Cable, Inc. His experience in these organizations has contributed to his expertise in semiconductor technology and optical devices.

Collaborations

Shimaoka has collaborated with esteemed colleagues, including Kazuyuki Fukuda and Tetsuo Kumazawa. These partnerships have furthered his research and development efforts in the semiconductor field.

Conclusion

Makoto Shimaoka's innovative work in semiconductor technology has led to significant advancements in optical devices. His contributions continue to impact the industry positively, showcasing his dedication to enhancing reliability and performance.

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