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Keiro Komatsu

USPTO Granted Patents = 15

Average Co-Inventor Count = 2.0

ph-index = 9

Forward Citations = 287(Granted Patents)

Company Filing History:

15 out of 35,658

Nec Corporation

Years Active: 1989-2001

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15 patents (USPTO):Sort by Forward Citations

Abstract keywords

1. 6278170 - Semiconductor multiple quantum well mach-zehnder optical modulator and method for fabricating the same (2001-08-21),

2. 6192170 - Multiple-wavelength light source and method of controlling oscillation frequencies thereof (2001-02-20),

3. 5841929 - Light wavelength filtering circuit and manufacturing method thereof (1998-11-24),

4. 5825047 - Optical semiconductor device (1998-10-20),

5. 5796883 - Optical integrated circuit and method for fabricating the same (1998-08-18),

6. 5770466 - Semiconductor optical integrated circuits and method for fabricating the (1998-06-23),

7. 5565693 - Semiconductor optical integrated circuits (1996-10-15),

8. 5521994 - Semiconductor optical waveguide-integrated light-receiving device (1996-05-28),

9. 5455433 - Semiconductor optical guided-wave device (1995-10-03),

10. 5381023 - Semiconductor device for control of a signal light (1995-01-10),

11. 5358896 - Method of producing optical integrated circuit (1994-10-25),

12. 5334551 - Method of making semiconductor optical guided-wave device (1994-08-02),

13. 5237639 - Optical waveguide formed of compound semiconductor materials and process (1993-08-17),

14. 5119449 - Optical directional coupler switch (1992-06-02),

15. 4795241 - Device and method for providing optical bistability with free carrier (1989-01-03),

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