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For the Inventor, By the Inventor

Yokohama, Japan

Fumiyuki Adachi

This inventor holds 50 USPTO granted patents, plus 17 CIPO patents and 3 EPO patents, primarily in CDMA Communication (CPC class 3752). Top assignees: Ntt Mobile Communications Network, Inc., Yozan Corporation, Nippon Telegraph and Telephone Public Corporation. Active years: 1977-2017.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Fumiyuki Adachi. Retrieved from https://idiyas.com/inventor/fumiyuki-adachi

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

Calculating rank
USPTO Granted Patents = 50

% Patents Active = 96.0



Average Co-Inventor Count = 2.4

ph-index = 22

Forward Citations = 1,379(Granted Patents)

Forward Citations (Not Self Cited) = 1,364(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Yokohama, JA (1977)
  • Tokyo, JP (1998)
  • Kanagawa-ken, JP (2002)
  • Yokohama, JP (1979 - 2004)
  • Sendai, JP (2007 - 2011)
  • Kanagawa, JP (1998 - 2017)

Company Filing History:

goldMedal35 out of 247 
 
Ntt Mobile Communications Network, Inc.
 patents
silverMedal8 out of 159 
 
Yozan Corporation
 patents
bronzeMedal3 out of 522 
 
Nippon Telegraph and Telephone Public Corporation
 patents
4. 3 out of 4,953 
 
Ntt Docomo, Inc.
 patents
5. 2 out of 7,659 
 
Renesas Electronics Corporation
 patents
6. 1 out of 5 
 
Intelligent Cosmos Research Institute
 patents
7. 1 out of 5,300 
 
Nippon Telegraph and Telephone Corporation
 patents
8. 4 out of 834,601 
Other
 patents
where one patent can have more than one assignee

Years Active: 1977-2017

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Areas of Expertise:
CDMA
Spread Spectrum
Digital Modulation
Receiver
Transmitter
Communication System
Channel Estimation
Variable Rate Transmission
Robust Demodulation
Packet Transmission
Signal Reception
Power Control
50 patents (USPTO):Explore Patents
1. 9806726 - Spread spectrum clock generator (2017-10-31),
2. 9660657 - Spread spectrum clock generator (2017-05-23),
3. 7903748 - Transmitter apparatus, communication system, and communication method (2011-03-08),
4. 7298721 - Single-carrier/DS-CDMA packet transmitting method, uplink packet transmitting method in multi carrier/DS-CDMA mobile communication system, and structure of downlink channel in multi carrier/DS-CDMA mobile communication system (2007-11-20),
5. 6904078 - CDMA receiver and CDMA transmitter/receiver (2005-06-07),
6. 6757272 - Channel estimation unit, and CDMA receiver and CDMA transceiver with channel estimation unit (2004-06-29),
7. 6724806 - Variable rate transmission and reception methods, and variable rate transmission and reception devices (2004-04-20),
8. 6647003 - Channel estimation unit, and CDMA receiver and CDMA transceiver with channel estimation unit (2003-11-11),
9. 6539009 - Signal reception apparatus for DS-CDMA cellular system (2003-03-25),
10. 6426949 - Signal reception apparatus for DS-CDMA communication system (2002-07-30),
11. 6351498 - Robust digital modulation and demodulation scheme for radio communications involving fading (2002-02-26),
12. 6278724 - Receiver in a spread spectrum communication system having low power analog multipliers and adders (2001-08-21),
13. 6263012 - Receiver apparatus for CDMA communication system (2001-07-17),
14. 6240148 - Path-diversity receiving method and system of spread spectrum communication (2001-05-29),
15. 6167037 - Signal transmitting method, transmitter, receiver, and spread-spectrum (2000-12-26),

Title: The Innovative Journey of Fumiyuki Adachi

Introduction:

Fumiyuki Adachi, a pioneering inventor hailing from Yokohama, Japan, has made significant contributions to the field of technology through his groundbreaking innovations.

Latest Patents:

Fumiyuki Adachi's recent patents showcase his commitment to pushing the boundaries of technological advancement, with a focus on areas such as telecommunications, electronics, and wireless systems.

Career Highlights:

Throughout his illustrious career, Fumiyuki Adachi has been at the forefront of innovation, holding key roles in research institutions and leading technology companies. His work has not only earned him recognition within the industry but has also positively impacted the lives of many through his inventions.

Collaborations:

Fumiyuki Adachi has collaborated with top researchers, engineers, and institutions worldwide, fostering a culture of innovation and knowledge-sharing. His collaborative efforts have resulted in the development of cutting-edge technologies that have shaped the modern technological landscape.

Conclusion:

In conclusion, Fumiyuki Adachi's relentless pursuit of innovation and his passion for creating transformative technologies have solidified his position as a visionary inventor. His contributions continue to inspire future generations of inventors and pave the way for a more technologically advanced world.

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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