Nagoya, Japan

Tatsuo Iwata

This inventor holds 3 USPTO granted patents. Top assignee: Ngk Spark Plug Company, Limited. Active years: 1995-2003.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tatsuo Iwata. Retrieved from https://idiyas.com/inventor/tatsuo-iwata

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

Calculating rank

% Patents Active = 66.7

Average Co-Inventor Count = 1.8

ph-index = 2

Forward Citations = 18(Granted Patents)


Location History:

  • Nagoya, JP (1995 - 1999)
  • Mie, JP (2003)

Company Filing History:


Years Active: 1995-2003

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3 patents (USPTO):Explore Patents

Title: Innovations of Tatsuo Iwata

Introduction

Tatsuo Iwata is a notable inventor based in Nagoya, Japan. He has made significant contributions to the field of piezoelectric technology, holding a total of 3 patents. His work focuses on enhancing the performance and efficiency of piezoelectric filters.

Latest Patents

One of his latest patents is a multilayer piezoelectric filter with an air vent between two resonator chambers. This innovative design includes at least two chambers for receiving resonators, which are partly defined by a top printed circuit board and an intermediate printed circuit board. The communication holes formed in these boards allow the chambers to connect with the outside environment. Another significant patent is the 6-elements ladder type piezoelectric filter. This filter features a circuit configuration that improves the group delay time characteristic, incorporating six resonators and various connections to optimize performance.

Career Highlights

Tatsuo Iwata is currently employed at NGK Spark Plug Company, Limited, where he continues to develop advanced technologies in the field of piezoelectric devices. His work has been instrumental in pushing the boundaries of what is possible with piezoelectric filters.

Collaborations

Some of his notable coworkers include Kazuhiro Hayashi and Masayuki Watanabe, who have collaborated with him on various projects within the company.

Conclusion

Tatsuo Iwata's contributions to piezoelectric technology through his patents and work at NGK Spark Plug Company, Limited highlight his innovative spirit and dedication to advancing this field. His inventions continue to influence the development of efficient piezoelectric filters.

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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