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For the Inventor, By the Inventor

Tokyo, Japan

Katsumi Muramatsu

This inventor holds 30 USPTO granted patents and 2 published patent applications and 7 EPO patents, primarily in Information Processing. Top assignees: Sony Corporation, Panasonic Corporation. Active years: 2007-2019.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsumi Muramatsu. Retrieved from https://idiyas.com/inventor/katsumi-muramatsu

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

USPTO Granted Patents = 30 

% Patents Active = 10.0

 

Average Co-Inventor Count = 4.1

ph-index = 5

Forward Citations = 138(Granted Patents)


Company Filing History:

goldMedal29 out of 58,145 
 
Sony Corporation
 patents
silverMedal2 out of 16,454 
 
Panasonic Corporation
 patents
where one patent can have more than one assignee

Years Active: 2007-2019

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Areas of Expertise:
Content Management
Data Verification
Encrypted Content
Information Storage
Recording Medium
Signal Processing
Authorization Systems
Data Processing
Mutual Authentication
Verification Programs
Information Processing System
30 patents (USPTO):Explore Patents
1. 10515021 - Information processing to set usage permission in content (2019-12-24),
2. 9805173 - Information processing device, information storage device, server, information processing system, information processing method and medium for reproduction of encrypted content (2017-10-31),
3. 9684772 - Information processing apparatus, information processing method and program (2017-06-20),
4. 9363089 - Information processing apparatus, information storage apparatus, information processing system, and information processing method and program for controlling content use (2016-06-07),
5. 9053739 - Information processing apparatus, information processing method and program (2015-06-09),
6. 9037867 - Information processing apparatus, information storage medium, content management system, data processing method, and computer program (2015-05-19),
7. 8929540 - Information processing apparatus, information recording medium manufacturing apparatus, information recording medium, method, and computer program (2015-01-06),
8. 8893307 - Information processing system and method for providing authorized content (2014-11-18),
9. 8868904 - Information processing device, disc, information processing method, and program (2014-10-21),
10. 8862903 - Information processing apparatus, information processing method and program (2014-10-14),
11. 8645710 - Information processing apparatus, information storage medium, content management system, data processing method, and computer program (2014-02-04),
12. 8510852 - Information processing apparatus, information recording medium manufacturing apparatus, information recording medium, method, and computer program (2013-08-13),
13. 8474049 - Verification method, information processing device, recording medium, verification system, certification program, and verification program (2013-06-25),
14. 8285117 - Information processing apparatus, disk, information processing method, and program (2012-10-09),
15. 8281362 - Verification method, verification program, recording medium, information processor, and integrated circuit (2012-10-02),

Title: Innovations of Katsumi Muramatsu in Information Processing

Introduction

Katsumi Muramatsu is a prominent inventor based in Tokyo, Japan, known for his extensive contributions to the field of information processing. With an impressive portfolio of 30 patents, his work focuses on enhancing the security and efficiency of content management systems.

Latest Patents

His latest innovations include a groundbreaking patent for an information processing system designed to set usage permissions in encrypted content. This invention features a comprehensive information storage device that not only stores encrypted content but also includes usage control information and a revocation list. The data processing unit within the device determines if reproduction of the encrypted content is permitted by acquiring an entry identifier for the revocation list. This sophisticated system executes a registration determination process to verify if the decoding device is authorized, thus ensuring robust content protection. Additionally, he has developed a method for managing user tokens and title keys for encrypted content, allowing controlled access for confirmed external devices.

Career Highlights

Katsumi has made significant strides in his career by working with renowned companies like Sony Corporation and Panasonic Corporation. His tenure at these prestigious organizations has solidified his reputation as an innovator in information technology and security, leading to his numerous patents and contributions to the industry.

Collaborations

Throughout his career, Katsumi has collaborated with notable professionals such as Kenjiro Ueda and Tateo Oishi. These partnerships have fostered a creative environment that has resulted in innovative solutions within the field of information processing.

Conclusion

Katsumi Muramatsu's contributions to the field of information processing exemplify the impact of dedicated innovation and collaboration. His portfolio of patents not only showcases his technical expertise but also his commitment to advancing technology in protecting content management systems. As he continues to innovate, Katsumi serves as an inspiration for future inventors in the realm of information 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]
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