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For the Inventor, By the Inventor

Kawasaki, Japan

Katsuhiro Shirai

USPTO Granted Patents = 12

Average Co-Inventor Count = 1.5

ph-index = 3

Forward Citations = 51(Granted Patents)


Company Filing History:

goldMedal12 out of 39,228 
 
Fujitsu Corporation
 patents

Years Active: 1998-2017

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12 patents (USPTO):Explore Patents
1. 9755756 - Transmission device, transmission system, and transmission method (2017-09-05),
2. 9197347 - Optical transmission system and noise suppression method (2015-11-24),
3. 8965197 - Method of switching optical transport network and node device (2015-02-24),
4. 8681785 - Communication apparatus and path setting control method (2014-03-25),
5. 8320278 - Communication device, system and method to form communication route (2012-11-27),
6. 8228788 - Network connection device and signal processing method in the network connection device (2012-07-24),
7. 6924927 - Optical transmitting apparatus and optical repeating apparatus (2005-08-02),
8. 6661947 - Optical transmitting apparatus and optical repeating apparatus (2003-12-09),
9. 6169615 - Wavelength division multiplex optical transmission apparatus (2001-01-02),
10. 5905585 - Optical bidirectional transmission system and method having (1999-05-18),
11. 5861974 - Transmission device connected to optical transmission line (1999-01-19),
12. 5760936 - Optical line switch device enabling connection of non-doubled optical (1998-06-02),

Title: Katsuhiro Shirai: Innovator in Optical Transmission Technologies

Introduction

Katsuhiro Shirai is a prominent inventor based in Kawasaki, Japan, known for his significant contributions to the field of optical transmission systems. With a total of 12 patents, Shirai has dedicated his career to developing innovative technologies that enhance data transmission efficiency and reliability.

Latest Patents

Shirai's recent work includes two notable patents. The first is a transmission device, transmission system, and transmission method. This invention features a payload generator that produces a payload and an adding unit that incorporates payload information into the payload. This structured payload is transmitted through a dedicated lane, while management information is communicated via a separate lane.

His second patent pertains to an optical transmission system and a noise suppression method. This method is crucial for systems utilizing Wavelength Division Multiplexing (WDM) optical signals. It outlines a precise protocol where first node equipment can detect and communicate failures of optical signals through a series of specified routes, thereby allowing for effective management and shutoff of optical outputs that are compromised.

Career Highlights

Katsuhiro Shirai is currently employed by Fujitsu Corporation, a leading technology company renowned for its innovative solutions in computing and telecommunications. Throughout his career, he has focused primarily on optical technologies, contributing immensely to advancements that improve transmission quality and reduce noise interference.

Collaborations

Throughout his professional journey, Shirai has collaborated with talented coworkers, including Koji Takeguchi and Yasuko Nozu. These partnerships have fostered a collaborative environment that encourages creativity and the exchange of ideas, leading to groundbreaking innovations in their field.

Conclusion

Katsuhiro Shirai's work exemplifies the spirit of innovation in the realm of optical transmission technology. With his impressive portfolio of patents, he continues to push the boundaries of what is possible, making significant contributions to the industry and enhancing the efficiency of data transmission systems.

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