Company Filing History:

14 out of 836

Hitachi Cable, Inc.

Hitachi Cable Co., Ltd.

patents

4. 1 out of 832,880

Other

patents

where one patent can have more than one assignee

Years Active: 1985-1997

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16 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5701177 - Method for detecting fault of optical fiber gyro and apparatus for (1997-12-23),

2. 5677973 - Method of aligning optical fiber to optical fiber or optical fiber to (1997-10-14),

3. 5608525 - Phase adjustable optical fiber gyro using both even order harmonics and (1997-03-04),

4. 5555235 - Optical fiber gyro with memory storing data measured under application (1996-09-10),

5. 5482525 - Method of producing elliptic core type polarization-maintaining optical (1996-01-09),

6. 5471301 - Optical fiber gyro (1995-11-28),

7. 5396327 - Fiber-optic gyroscope having angular velocity correction (1995-03-07),

8. 5264914 - Interference sensor and method utilizing extracted alliasing frequency (1993-11-23),

9. 5239362 - Fiber-optic rotation sensor (1993-08-24),

10. 5208652 - An improved optical branching/coupling unit for an optical fiber (1993-05-04),

11. 4859223 - Method of manufacturing polarization-maintaining optical fibers (1989-08-22),

12. 4848867 - Rotary joint for polarization plane maintaining optical fibers (1989-07-18),

13. 4818047 - Polarized wave preserving fiber (1989-04-04),

14. 4584470 - Single-polarization fiber optics magnetic sensor (1986-04-22),

15. 4500168 - Single polarization optical fibers (1985-02-19),

Title: Hiroshi Kajioka: Innovator in Optical Fiber Technology

Introduction

Hiroshi Kajioka is a prominent inventor based in Hitachi, Japan. He has made significant contributions to the field of optical fiber technology, holding a total of 16 patents. His work focuses on methods and apparatuses that enhance the functionality and reliability of optical fiber systems.

Latest Patents

Kajioka's latest patents include a method for detecting faults in optical fiber gyros. This innovative approach involves propagating a phase-modulated light through an optical fiber sensing loop. The propagated light is converted into an electric signal, allowing for the detection of fundamental wave components and even-number harmonic wave components of the phase-modulating signal. By analyzing these components, faults can be identified effectively. Additionally, he has developed a method for aligning optical fibers, which takes into account the positional axial displacement in an optical fiber array. This method utilizes an image pick-up means to obtain an enlarged image of each optical fiber, enabling precise measurement and alignment.

Career Highlights

Throughout his career, Kajioka has worked with notable companies such as Hitachi Cable, Inc. and Hitachi, Ltd. His experience in these organizations has allowed him to refine his expertise in optical fiber technology and contribute to various advancements in the field.

Collaborations

Kajioka has collaborated with esteemed colleagues, including Tatsuya Kumagai and Hisao Sonobe. These partnerships have fostered innovation and have been instrumental in the development of his patented technologies.

Conclusion

Hiroshi Kajioka's contributions to optical fiber technology have established him as a leading inventor in his field. His innovative patents and collaborations reflect his commitment to advancing technology and improving the reliability of optical systems.

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