Hiroshi Onaka

This inventor holds 81 USPTO granted patents, plus 2 CIPO patents and 10 EPO patents, primarily in Optical Communication (CPC class H04J1-402). Top assignees: Fujitsu Corporation, Fujitsu Network Communications, Inc., Hitachi Cable, Inc.. Active years: 1990-2013.

USPTO Granted Patents = 81

% Patents Active = 72.8

CIPO Patents = 2

EPO Patents = 10 (Patent Applications = 1)

Average Co-Inventor Count = 2.9

ph-index = 18

Forward Citations = 1,041(Granted Patents)

Forward Citations (Not Self Cited) = 1,022(Dec 10, 2025)

Inventors with similar research interests:

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Location History:

Kanagawa, JP (2001)
Kawasaki, JP (1990 - 2013)

Company Filing History:

Fujitsu Network Communications, Inc.

Yokogawa Electric Corporation

patents

where one patent can have more than one assignee

Years Active: 1990-2013

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Areas of Expertise:

Optical Communication

Wavelength Division Multiplexing

Optical Amplifiers

Encryption Methods

Optical Transmission

Dispersion Compensation

Optical Add/Drop Multiplexer

Optical Node Device

Optical Receiver

Optical Monitoring

Optical Filters

Optical Signal Processing

81 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 8521039 - Optical communication apparatus and optical add/drop apparatus (2013-08-27),

2. 8213798 - Optical transmission apparatus, wavelength division multiplexing optical communication system and optical transmission method (2012-07-03),

3. 7953329 - Optical communication apparatus and optical add/drop apparatus (2011-05-31),

4. 7869715 - Dispersion compensating apparatus and dispersion compensation control method (2011-01-11),

5. 7860408 - Interferometer for demodulating differential M-phase shift keying signal (2010-12-28),

6. 7848659 - Optical transmitting apparatus and optical communication system (2010-12-07),

7. 7822204 - Encryption method, cryptogram decoding method, encryptor, cryptogram decoder, transmission/reception system, and communication system (2010-10-26),

8. 7769299 - Chromatic dispersion monitoring method and chromatic dispersion monitoring apparatus, and optical transmission system (2010-08-03),

9. 7688498 - Optical amplifier and optical monitor circuit (2010-03-30),

10. 7631378 - Optical waveform shaper (2009-12-15),

11. 7606504 - Optical receiver and optical receiving method corresponding to differential M-phase shift keying system (2009-10-20),

12. 7577368 - Optical communication apparatus and optical add/drop apparatus (2009-08-18),

13. 7483639 - Method and system for transmitting information in an optical communication system using distributed amplification (2009-01-27),

14. 7471790 - Encryption method, cryptogram decoding method, encryptor, cryptogram decoder, and communication system (2008-12-30),

15. 7433600 - Optical node device and system including the device (2008-10-07),

Title: The Innovative Journey of Hiroshi Onaka

Introduction: Hiroshi Onaka is a pioneering inventor hailing from Kawasaki, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Hiroshi Onaka holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his continuous commitment to pushing the boundaries of technological advancement.

Career Highlights: With a career spanning over two decades, Hiroshi Onaka has worked with leading tech companies in Japan, spearheading research and development projects that have led to significant technological breakthroughs in various industries.

Collaborations: Throughout his career, Hiroshi Onaka has collaborated with top researchers, engineers, and scientists both locally and internationally, fostering a culture of innovation and knowledge sharing to drive progress in the tech sector.

Conclusion: Hiroshi Onaka's relentless pursuit of innovation and his passion for creating cutting-edge technologies have solidified his reputation as a visionary inventor in the global tech community. His work continues to inspire future generations of inventors and innovators to push the boundaries of what is possible in the world of technology.