logo

For the Inventor, By the Inventor

Tokyo, Japan

Tohru Nagano

This inventor holds 18 USPTO granted patents and 4 published patent applications and 1 EPO patent, primarily in Speech Recognition Technology. Top assignees: International Business Machines Corporation, Activision Publishing, Inc., Sinoeast Concept Limited. Active years: 2009-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tohru Nagano. Retrieved from https://idiyas.com/inventor/tohru-nagano

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

Calculating rank
USPTO Granted Patents = 18 

% Patents Active = 94.4

 

Average Co-Inventor Count = 2.5

ph-index = 5

Forward Citations = 737(Granted Patents)


Location History:

  • Yamato, JP (2009)
  • Kanagawa-ken, JP (2012)
  • Yokohama, JP (2011 - 2018)
  • Tokyo, JP (2016 - 2024)

Company Filing History:

goldMedal12 out of 166,425 
 
International Business Machines Corporation
 patents
silverMedal3 out of 327 
 
Activision Publishing, Inc.
 patents
bronzeMedal2 out of 12 
 
Sinoeast Concept Limited
 patents
4. 1 out of 1,422 
 
Nuance Communications, Inc.
 patents

Years Active: 2009-2025

Loading Chart...
Loading Chart...
Areas of Expertise:
Speech Recognition
Artificial Intelligence
Natural Language Processing
Dialog Server
Speech Retrieval
RNN-T Models
Utterance Splitting
Synthetic Speech
Sound Source Detection
Response Time Reduction
Virtual Conversation
Data Analysis
18 patents (USPTO):Explore Patents
1. 12451124 - Domain adaptive speech recognition using artificial intelligence (2025-10-21),
2. 12027153 - Data sorting for generating RNN-T models (2024-07-02),
3. 11107473 - Approach to reducing the response time of a speech interface (2021-08-31),
4. 10600411 - Approach to reducing the response time of a speech interface (2020-03-24),
5. 10140976 - Discriminative training of automatic speech recognition models with natural language processing dictionary for spoken language processing (2018-11-27),
6. 10001970 - Dialog server for handling conversation in virtual space method and computer program for having conversation in virtual space (2018-06-19),
7. 9972308 - Splitting utterances for quick responses (2018-05-15),
8. 9922647 - Approach to reducing the response time of a speech interface (2018-03-20),
9. 9626958 - Speech retrieval method, speech retrieval apparatus, and program for speech retrieval apparatus (2017-04-18),
10. 9626957 - Speech retrieval method, speech retrieval apparatus, and program for speech retrieval apparatus (2017-04-18),
11. 9583109 - Dialog server for handling conversation in virtual space method and computer program for having conversation in virtual space (2017-02-28),
12. 9378736 - Speech retrieval method, speech retrieval apparatus, and program for speech retrieval apparatus (2016-06-28),
13. 9373328 - Speech retrieval method, speech retrieval apparatus, and program for speech retrieval apparatus (2016-06-21),
14. 8554841 - Dialog server for handling conversation in virtual space method and computer program for having conversation in virtual space (2013-10-08),
15. 8165317 - Method and system for position detection of a sound source (2012-04-24),

Title: The Innovative Mind of Tohru Nagano

Introduction

Tohru Nagano is a prominent inventor based in Tokyo, Japan, recognized for his significant contributions to the field of speech recognition technology. With a portfolio that boasts 17 patents, Nagano continues to push the boundaries of innovation. His efforts are instrumental in enhancing user interaction with technology through improved speech interfaces.

Latest Patents

Nagano's latest patents highlight his focus on advancing speech recognition models. One notable patent is the "Data sorting for generating RNN-T models," which details a computer-implemented method for preparing training data for speech recognition. This method involves obtaining multiple sentences, examining phonemes, scoring their duration variations, and sorting the sentences based on these calculated scores. Another significant patent is his work on the "Approach to reducing the response time of a speech interface." This method constructs a completed word sequence from partially received utterances, utilizing a rich predictive model to anticipate the remainder portions. As a result, it enables faster vocal response through a natural language generator, improving user experience.

Career Highlights

Throughout his career, Tohru Nagano has collaborated with notable companies, including IBM and Activision Publishing, Inc. These experiences have equipped him with a unique perspective on innovation, fostering an environment where creativity meets practicality in the technological realm.

Collaborations

Nagano's journey has been marked by collaborations with talented individuals, including Gakuto Kurata and Masafumi Nishimura. These partnerships have not only enriched his work but also played a role in the successful development of innovative technologies that hold the potential to transform voice recognition systems.

Conclusion

Tohru Nagano stands as a testament to the power of innovation in the tech industry. With 17 patents to his name, his advancements in speech recognition illustrate the profound impact inventors can have on technology and daily life. As he continues to innovate, the future looks promising for advancements in communication technology.

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]
Loading…