Sapporo, Japan

Hiroyuki Itou

This inventor holds 17 USPTO granted patents, primarily in Optical Amplification. Top assignee: Fujitsu Corporation. Active years: 1997-2013.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroyuki Itou. Retrieved from https://idiyas.com/inventor/hiroyuki-itou-2ilntz1d

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile


% Patents Active = 70.6

Average Co-Inventor Count = 4.0

ph-index = 8

Forward Citations = 155(Granted Patents)


Location History:

  • Hokkaido, JP (2002)
  • Yokohama, JP (2007)
  • Sapporo, JP (1997 - 2013)

Company Filing History:


Years Active: 1997-2013

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Areas of Expertise:
Optical Amplifiers
Gain Adjustments
Signal Level Adjustments
Wavelength Division Multiplexing
Control Methods
Multi-Wavelength
Transmission Systems
Optical Transmission
Auxiliary-Signal
17 patents (USPTO):Explore Patents

Title: Hiroyuki Itou: Innovator in Optical Amplification Technology

Introduction

Hiroyuki Itou is a prominent inventor based in Sapporo, Japan. He has made significant contributions to the field of optical amplification, holding a total of 17 patents. His work focuses on enhancing the performance and efficiency of optical devices, which are crucial in telecommunications and data transmission.

Latest Patents

One of Hiroyuki Itou's latest patents is titled "Gain and signal level adjustments of cascaded optical amplifiers." This invention describes an optical amplification device that includes first and second optical amplifiers, along with a controller. The first optical amplifier receives light and amplifies it, while the second optical amplifier further amplifies the light received from the first. The controller plays a vital role in adjusting the levels of light received by the second optical amplifier in response to changes in the first, ensuring that the sum of the gains remains constant. Additionally, the device features a gain adjustor that detects deviations in the gain of the first optical amplifier and compensates by adjusting the gain of the second amplifier.

Career Highlights

Hiroyuki Itou is currently employed at Fujitsu Corporation, where he continues to innovate in the field of optical technology. His expertise and dedication have led to advancements that enhance the capabilities of optical amplifiers, making them more efficient and reliable.

Collaborations

Hiroyuki has collaborated with notable colleagues such as Taiki Kobayashi and Michikazu Shima. Their combined efforts contribute to the ongoing development of cutting-edge optical technologies.

Conclusion

Hiroyuki Itou's work in optical amplification technology exemplifies the impact of innovation in telecommunications. His patents and contributions continue to shape the future of optical devices, ensuring improved performance and efficiency in data transmission.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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