logo

For the Inventor, By the Inventor

Tokyo, Japan

Yutaka Kawai

This inventor holds 56 USPTO granted patents and 13 published patent applications and 17 EPO patents, primarily in Cryptographic Systems. Top assignees: Mitsubishi Electric Corporation, International Business Machines Corporation, Hoya Corporation. Active years: 1991-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yutaka Kawai. Retrieved from https://idiyas.com/inventor/yutaka-kawai

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

USPTO Granted Patents = 56 

% Patents Active = 71.4

 

Average Co-Inventor Count = 2.1

ph-index = 5

Forward Citations = 93(Granted Patents)

Forward Citations (Not Self Cited) = 77(Dec 10, 2025)


Location History:

  • Tokyo, JP (1991 - 2024)
  • Suginami, JP (2018 - 2024)

Company Filing History:

goldMedal34 out of 16,602 
 
Mitsubishi Electric Corporation
 patents
silverMedal18 out of 166,351 
 
International Business Machines Corporation
 patents
bronzeMedal3 out of 2,566 
 
Hoya Corporation
 patents
4. 1 out of 1,256 
 
Kawasaki Steel Corporation
 patents

Years Active: 1991-2026

Loading Chart...
Loading Chart...
Areas of Expertise:
Encryption
Decryption
Searchable Encryption
Cryptographic System
Privacy-Preserving
Data Management
Re-encryption
Homomorphic Computation
Secure Display
Data Processing
Memory Protection
Load Balancing
56 patents (USPTO):Explore Patents
1. 12762264 - Searchable encryption system, data management device, searchable encryption method, and computer readable medium (2026-10-13),
2. 12647250 - Ciphertext conversion system, ciphertext conversion method, and non-transitory computer readable medium (2026-06-02),
3. 12640906 - Ciphertext conversion system, ciphertext conversion method, and non-transitory computer readable medium (2026-05-26),
4. 12542661 - Encryption apparatus, decryption apparatus, decryption-possible verification apparatus, cryptosystem, encryption method, and computer readable medium (2026-02-03),
5. 12393722 - Encrypted tag generation apparatus, searchable encryption system, encrypted tag generation method, and computer readable medium (2025-08-19),
6. 12261951 - Cryptographic system, encrypted data conversion apparatus, and computer readable medium (2025-03-25),
7. 12216787 - Searchable encryption system, searchable encryption method, and non-transitory computer-readable recording medium (2025-02-04),
8. 12177346 - Re-encryption device, cryptographic system, re-encryption method, and computer readable medium (2024-12-24),
9. 12061604 - Searchable encryption system (2024-08-13),
10. 11984716 - Power cable embedded floor panel (2024-05-14),
11. 11902418 - Registration device, search operation device, and data management device (2024-02-13),
12. 11831769 - Registration device, server device, searchable encryption system, and searchable encryption method (2023-11-28),
13. 11824638 - Re-encryption device, method and computer readable medium to change the access range for ciphertext (2023-11-21),
14. 11790105 - Secret search system and secret search method (2023-10-17),
15. 11687682 - Computing device security cable (2023-06-27),

Title: The Innovative Mind of Yutaka Kawai

Introduction

Yutaka Kawai, a prolific inventor based in Tokyo, Japan, has made significant contributions to the field of encryption and data security. With an impressive portfolio of 50 patents, Kawai's work reflects a deep understanding of technological advancements and their practical applications in everyday life.

Latest Patents

Among his most recent patents are groundbreaking innovations, including a searchable encryption system, a searchable encryption method, and a non-transitory computer-readable recording medium. The searchable encryption system features a complex architecture that includes a registration device with both an index generation unit and an encrypted index generation unit. This system allows for the creation of a registration keyword index using specific attributes related to authorized searchers, thereby enhancing data security. Additionally, his work on a re-encryption device and cryptographic systems demonstrates his commitment to advancing security measures through innovative encryption algorithms and key generation methods.

Career Highlights

Throughout his career, Kawai has been associated with prestigious companies, notably Mitsubishi Electric Corporation and IBM. His tenure at these organizations has allowed him to leverage cutting-edge technology and contribute to impactful projects that prioritize data integrity and user security.

Collaborations

Yutaka Kawai's innovative journey has been marked by fruitful collaborations with fellow researchers and inventors, including Yoshihiro Koseki and Yohichi Miwa. These partnerships have fostered the exchange of ideas and fueled the development of new inventions in the realm of encryption and digital security.

Conclusion

In conclusion, Yutaka Kawai exemplifies the spirit of innovation in the field of data security. His extensive patent portfolio not only showcases his technical expertise but also highlights his commitment to developing advanced systems that protect sensitive information. As he continues to push the boundaries of technology, Kawai's work will undoubtedly inspire future generations of inventors and researchers.

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…