Ichikawa, Japan

Tadahiro Kiyama

This inventor holds 3 USPTO granted patents. Top assignee: Hitachi, Ltd.. Active years: 1996-1997.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tadahiro Kiyama. Retrieved from https://idiyas.com/inventor/tadahiro-kiyama

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


% Patents Active = 100.0

Average Co-Inventor Count = 3.2

ph-index = 2

Forward Citations = 80(Granted Patents)


Location History:

  • Yao, JP (1996)
  • Ichikawa, JP (1996 - 1997)

Company Filing History:


Years Active: 1996-1997

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3 patents (USPTO):Explore Patents

Title: Innovations of Tadahiro Kiyama

Introduction

Tadahiro Kiyama is a notable inventor based in Ichikawa, Japan. He has made significant contributions to the field of technology, particularly in keyword assignment and text retrieval systems. With a total of 3 patents to his name, Kiyama's work has advanced the way information is processed and retrieved.

Latest Patents

Kiyama's latest patents include a "Keyword assigning method and system therefor." This innovative system divides text data into words, stores the results in a table, and detects the frequency of word occurrences. It extracts keywords from text data based on domain-specific word occurrence collections, thereby automating the extraction and assignment of keywords. Another significant patent is the "Text retrieval method and apparatus based on a handwritten keyword." This method utilizes an optical character reader to recognize handwritten keywords, generating retrieval command strings to access relevant texts from a database.

Career Highlights

Kiyama is currently employed at Hitachi, Ltd., where he continues to develop and refine his innovative ideas. His work at Hitachi has allowed him to collaborate with other talented individuals in the field, contributing to the advancement of technology.

Collaborations

Some of Kiyama's coworkers include Hiroshi Tsuji and Hisao Mase. Their collaborative efforts have further enhanced the innovative projects they work on together.

Conclusion

Tadahiro Kiyama's contributions to technology through his patents and work at Hitachi, Ltd. highlight his role as a significant inventor in the field. His innovative methods for keyword assignment and text retrieval continue to influence the way information is processed today.

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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