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For the Inventor, By the Inventor

Tokyo, Japan

Shigeo Akazawa

This inventor holds 11 USPTO granted patents. Top assignee: Clarion Co. Active years: 1989-1994.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shigeo Akazawa. Retrieved from https://idiyas.com/inventor/shigeo-akazawa

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

USPTO Granted Patents = 11

% Patents Active = 100.0

Average Co-Inventor Count = 2.1

ph-index = 8

Forward Citations = 216(Granted Patents)


Company Filing History:

goldMedal11 out of 1,057 
 
Clarion Co
 patents

Years Active: 1989-1994

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11 patents (USPTO):Explore Patents
1. 5347534 - Automatic gain control system (1994-09-13),
2. 5291515 - Spread spectrum communication device (1994-03-01),
3. 5228055 - Spread spectrum communication device (1993-07-13),
4. 5168505 - Automatic gain control device for spread spectrum communication device (1992-12-01),
5. 5144641 - Spread spectrum communication device (1992-09-01),
6. 5111479 - Spread spectrum receiver and carrier sense circuit therefor (1992-05-05),
7. 4993044 - Spread-spectrum communication receiver (1991-02-12),
8. 4924188 - Spread spectrum receiver having phase shifter for effecting phase (1990-05-08),
9. 4908837 - Receiver for spread spectrum communication (1990-03-13),
10. 4899364 - Automatic gain control system (1990-02-06),
11. 4866734 - Receiver for spread spectrum communication (1989-09-12),

Title: Shigeo Akazawa: Innovator in Spread Spectrum Communication

Introduction

Shigeo Akazawa is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of communication technology, particularly in spread spectrum communication systems. With a total of 11 patents to his name, Akazawa's work has had a lasting impact on the industry.

Latest Patents

Among his latest patents is an automatic gain control system. This system features a spread spectrum receiver that includes a correlator with two convolvers. The correlation outputs are applied to a demodulator via two variable gain amplifiers, whose gains are controlled based on the demodulation output from the demodulator. Another notable patent is for a spread spectrum communication device. On the transmitter side, data is converted into multiple parallel data sets by a serial-parallel converter. Spread spectrum modulation is achieved using PN code generators and selectors. The modulated outputs are delayed and then multiplexed for transmission. On the receiver side, correlation between the received signal and a reference signal is formed to facilitate efficient data demodulation.

Career Highlights

Shigeo Akazawa has been instrumental in advancing communication technologies through his innovative designs and patents. His work at Clarion Co. has positioned him as a key figure in the development of modern communication systems. His inventions have not only enhanced the efficiency of data transmission but have also paved the way for future advancements in the field.

Collaborations

Throughout his career, Akazawa has collaborated with notable colleagues, including Masahiro Hamatsu and Masaharu Mori. These partnerships have contributed to the successful development and implementation of various communication technologies.

Conclusion

Shigeo Akazawa's contributions to the field of communication technology are significant and noteworthy. His innovative patents and collaborative efforts have helped shape the landscape of spread spectrum communication. His work continues to influence the industry and inspire future innovations.

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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