Tokyo, Japan

Kazuo Koyama

This inventor holds 23 USPTO granted patents and 2 published patent applications, primarily in Pharmaceutical Compounds. Top assignees: Sankyo Company, Limited, Clarion Co, Btg International Limited. Active years: 1988-2020.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazuo Koyama. Retrieved from https://idiyas.com/inventor/kazuo-koyama

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

USPTO Granted Patents = 23 

% Patents Active = 69.6

Average Co-Inventor Count = 2.5

ph-index = 6

Forward Citations = 124(Granted Patents)


Location History:

  • Hiromachi, JP (1995 - 1996)
  • Ageo, JP (1996)
  • Kawaguchi, JP (1999 - 2009)
  • Hasuda, JP (2011 - 2014)
  • Tokyo, JP (1988 - 2020)

Company Filing History:


Years Active: 1988-2020

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Areas of Expertise:
AD Converter
Broadcast Receiver
Alzheimer's Disease
Benzylamine Analogues
Isoxazole Derivatives
Heterocyclic Compounds
Carbacyclin Derivatives
Prostaglandin Derivatives
Radio Broadcasting
Therapeutic Use
Nitrogen-Containing Compounds
Signal Seeking
23 patents (USPTO):Explore Patents

Title: Innovator Profile: Kazuo Koyama

Introduction: Kazuo Koyama is a prominent inventor based in Tokyo, Japan, known for his extensive contributions to the field of analog-to-digital converters and broadcast technology. With a remarkable portfolio of 23 patents, Koyama has significantly advanced the efficiency and performance of modern electronic systems.

Latest Patents: Two of Koyama's most recent patents include the Successive-approximation type AD converter and the Pipeline type AD converter. The successive-approximation type AD converter is designed to eliminate the delay commonly associated with sample hold. This innovative device consists of receiving circuits that output the analog input signal, subtractors for calculating differences between the analog input and comparison signals, comparators for assessing voltage relationships, a control circuit for updating control values, and an output register to deliver digital signals based on the comparisons.

Additionally, Koyama has developed an IBOC broadcast receiver, which is optimized for receiving broadcast signals through the IBOC system's signal format. This broadcast receiver includes receiving means that maintain relevant channel information, ensuring efficient digital signal decoding.

Career Highlights: Throughout his career, Kazuo Koyama has worked with notable companies such as Sankyo Company, Limited and Clarion Co. His innovative contributions have played a crucial role in the advancement of electronic circuit designs and communication technologies.

Collaborations: Koyama has collaborated with other talented professionals in the field, including colleagues Koichi Kojima and Shinji Marumoto. Their collective expertise has fostered an environment of innovation and fruitful development in their respective projects.

Conclusion: As an influential inventor, Kazuo Koyama continues to shape the landscape of electronic technology with his innovative patents and collaborative efforts. His work is a testament to the dynamic nature of innovation and its pivotal role in advancing industries worldwide.

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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