IDiyas

For the Inventor, By the Inventor

Tokyo, Japan

Hisashi Kawabata

USPTO Granted Patents = 11


Average Co-Inventor Count = 1.2

ph-index = 6

Forward Citations = 71(Granted Patents)


Company Filing History:

goldMedal11 out of 35,658 
 
Nec Corporation
 patents

Years Active: 1994-2009

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11 patents (USPTO):Explore Patents
1. 7599319 - Radio communications system and control method therefor (2009-10-06),
2. 7583966 - Mobile communications system, radio network controller, and active set control method (2009-09-01),
3. 7042924 - Synchronization establishing and tracking circuit for CDMA base station (2006-05-09),
4. 6975885 - Base station and mobile broadcast communication system including the same (2005-12-13),
5. 6097952 - Mobile communication termination controlling method and mobile (2000-08-01),
6. 5987072 - Phase modulation scheme and apparatus (1999-11-16),
7. 5876870 - Battery residual amount display circuit (1999-03-02),
8. 5793819 - Radio communication terminal station (1998-08-11),
9. 5629961 - Transmitter apparatus for mobile satellite communication terminal having (1997-05-13),
10. 5448201 - Clock recovery circuit in .pi./4 shift quadriphase PSK demodulator (1995-09-05),
11. 5296820 - Coherent demodulator preceded by non-coherent demodulator and automatic (1994-03-22),

Title: Hisashi Kawabata: Innovator in Radio Communications

Introduction

Hisashi Kawabata is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of radio communications, holding a total of 11 patents. His work has been instrumental in advancing mobile communication technologies.

Latest Patents

Kawabata's latest patents include a "Radio communications system and control method therefor." This invention involves a radio base station that receives both a first and a second communication channel from a radio communications device. The control circuit detects the reception quality of the first communication channel and conducts inner-loop power control to manage the transmission power based on this quality. Additionally, he has developed a "Mobile communications system, radio network controller, and active set control method." This method enhances handover operations in CDMA communications systems by managing the active set of cells based on signal quality.

Career Highlights

Kawabata is currently employed at NEC Corporation, where he continues to innovate in the field of telecommunications. His work has not only contributed to the company's success but has also influenced the broader industry.

Collaborations

Some of his notable coworkers include Motoya Iwasaki and Osami Nishimura, who have collaborated with him on various projects within the company.

Conclusion

Hisashi Kawabata's contributions to radio communications exemplify the impact of innovative thinking in technology. His patents and ongoing work at NEC Corporation continue to shape the future of mobile communications.

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