Company Filing History:

7 out of 42,485

Hitachi, Ltd.

patents

3 out of 30

Hitachi Tobu Semiconductor

patents

2 out of 832,680

Other

patents

where one patent can have more than one assignee

Years Active: 1987-2001

Loading Chart...

9 patents (USPTO):Sort by Forward Citations

Abstract keywords

1. 6195371 - Optical transmission device and method for driving laser diode (2001-02-27),

2. 6195370 - Optical transmission device and method for driving laser diode (2001-02-27),

3. 5386310 - Parallel optical switching apparatus (1995-01-31),

4. 5283846 - Optical isolator, optical circuit, and rare-earth-doped fiber optical (1994-02-01),

5. 4997243 - Method of mounting a light emitting chip and an optical fiber on a (1991-03-05),

6. 4920262 - Photoelectric device with leads (1990-04-24),

7. 4803361 - Photoelectric device with optical fiber and laser emitting chip (1989-02-07),

8. 4779281 - Light emitting chip and optical communication apparatus using the same (1988-10-18),

9. 4701927 - Light emitting chip and optical communication apparatus using the same (1987-10-20),

Title: The Innovations of Makoto Haneda

Introduction

Makoto Haneda is a notable inventor based in Takasaki, Japan. He has made significant contributions to the field of optical transmission technology, holding a total of 9 patents. His work has been instrumental in advancing the efficiency and reliability of laser diode applications.

Latest Patents

One of Haneda's latest patents is an optical transmission device and method for driving a laser diode. This innovative device obtains driving control data corresponding to a temperature detected by a temperature detection circuit from memory means. It controls a driving current supplied to a laser diode based on this data and measures the actual driving current supplied to the laser diode, ensuring that its emission power remains constant through an automatic optical output control circuit. When the difference between the measured driving current and the driving current determined by the control data exceeds an allowable range, the device updates the driving control data. This advancement allows for a reliable distinction between increases in driving current due to laser diode deterioration and variations in ambient temperature.

Career Highlights

Throughout his career, Haneda has worked with prominent companies such as Hitachi, Ltd. and Hitachi Tobu Semiconductor. His experience in these organizations has contributed to his expertise in optical technologies and semiconductor applications.

Collaborations

Haneda has collaborated with notable colleagues, including Kunio Aiki and Atsushi Sasayama. Their combined efforts have furthered the development of innovative technologies in their respective fields.

Conclusion

Makoto Haneda's contributions to optical transmission technology and his extensive patent portfolio highlight his role as a leading inventor in the industry. His work continues to influence advancements in laser diode applications and optical communication systems.

This text is generated by artificial intelligence and may not be accurate.

Please report any incorrect information to support@idiyas.com

Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.