Company Filing History:

13 out of 5,289

Nippon Telegraph and Telephone Corporation

patents

3 out of 164

Ntt Electronics Corporation

where one patent can have more than one assignee

Years Active: 2001-2019

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13 patents (USPTO):Sort by Forward Citations

Abstract keywords

1. 10333280 - Semiconductor laser device (2019-06-25),

2. 10126502 - Optical waveguide device and module (2018-11-13),

3. 10050717 - Multi-stage interferometer circuit with waveform shaping function (2018-08-14),

4. 9684129 - Optical waveguide device and module (2017-06-20),

5. 9116305 - Arrayed waveguide grating, optical module provided with said arrayed waveguide grating, and optical communications system (2015-08-25),

6. 9020307 - Optical waveguide device and module (2015-04-28),

7. 8867873 - Arrayed waveguide grating (2014-10-21),

8. 8369666 - Optical wavelength multiplexing/ de-multiplexing circuit (2013-02-05),

9. 6937797 - Planar lightwave circuit and optical circuit (2005-08-30),

10. 6775454 - Silica-based optical waveguide circuit and fabrication method thereof (2004-08-10),

11. 6625370 - Optical waveguide and fabricating method thereof, and optical waveguide circuit (2003-09-23),

12. 6580862 - Optical waveguide circuit (2003-06-17),

13. 6304706 - Planar lightwave circuit (2001-10-16),

Title: Mikitaka Itoh: Innovator in Semiconductor Laser Technology

Introduction

Mikitaka Itoh is a prominent inventor based in Atsugi, Japan, known for his significant contributions to the field of semiconductor laser technology. With a total of 13 patents to his name, Itoh has made remarkable advancements that enhance the performance and efficiency of laser devices.

Latest Patents

One of Itoh's latest patents is a semiconductor laser device that addresses the challenges associated with long resonators in DFB laser-based wavelength tunable lasers. This invention features a semiconductor laser that oscillates in a single mode, combined with a low-loss lightwave circuit using SiOglass on a common substrate. The design allows for a compact laser device with a narrowed spectral linewidth and stable wavelength controllability. Another notable patent is an optical waveguide device and module that effectively terminates unnecessary optical power. This device incorporates a termination structure filled with a light-blocking material to suppress crosstalk, ensuring optimal performance of integrated optical devices.

Career Highlights

Throughout his career, Mikitaka Itoh has worked with leading companies in the telecommunications and electronics sectors, including Nippon Telegraph and Telephone Corporation and NTT Electronics Corporation. His work has significantly impacted the development of advanced optical technologies.

Collaborations

Itoh has collaborated with notable colleagues such as Yasuyuki Inoue and Yasuhiro Hida, contributing to various innovative projects in the field of semiconductor lasers.

Conclusion

Mikitaka Itoh's contributions to semiconductor laser technology exemplify his dedication to innovation and excellence. His patents reflect a deep understanding of optical systems and a commitment to advancing the field.

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2 patents (EPO):

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