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For the Inventor, By the Inventor

Kanagawa, Japan

Koichi Maari

This inventor holds 9 USPTO granted patents. Top assignee: Sony Corporation. Active years: 1996-2009.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Koichi Maari. Retrieved from https://idiyas.com/inventor/koichi-maari

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

USPTO Granted Patents = 9

% Patents Active = 77.8

Average Co-Inventor Count = 1.1

ph-index = 6

Forward Citations = 91(Granted Patents)


Location History:

  • Chiba, JP (2007)
  • Kanagawa, JP (1996 - 2009)

Company Filing History:

goldMedal9 out of 58,145 
 
Sony Corporation
 patents

Years Active: 1996-2009

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9 patents (USPTO):Explore Patents
1. 7636691 - Method of controlling digital content distribution, a method of reproducing digital content, and an apparatus using the same (2009-12-22),
2. 7245937 - Network system, communication method of network system, electronic device, communication method of electronic device, communication apparatus, communication method of communication apparatus, storage medium, and computer program (2007-07-17),
3. 7120604 - Method of controlling digital content distribution, a method of reproducing digital content, and an apparatus using the same (2006-10-10),
4. 6274438 - Method of manufacturing contact programmable ROM (2001-08-14),
5. 5925917 - Contact programmable ROM and method of manufacturing the same (1999-07-20),
6. 5818762 - Memory having charge-carrying floating gate memory cells with (1998-10-06),
7. 5814855 - Nonvolatile memory device and method of manufacturing same (1998-09-29),
8. 5545907 - Semiconductor device and method of forming the same (1996-08-13),
9. 5510283 - Method of making a semiconductor device (1996-04-23),

Title: Innovations by Koichi Maari in Digital Content Distribution

Introduction

Koichi Maari is a prominent inventor based in Kanagawa, Japan. He has made significant contributions to the field of digital content distribution, holding a total of 9 patents. His work focuses on methods and apparatuses that enhance the efficiency and security of digital content management.

Latest Patents

Among his latest patents, Maari has developed a method of controlling digital content distribution and a method of reproducing digital content. These innovations include a digital content distribution control method, a digital content reproducing method, and a digital content reproducing apparatus. The digital content distributing side manipulates digital content by encrypting and compressing it, transmitting the manipulated digital content along with an encrypted content key and billing information to the other party of communication. This system allows for the collection of digital content usage fees based on information received from the other party. On the reproducing side, the digital content is decrypted and decompressed for reproduction in a single portable terminal. The system also generates content usage information to be sent back to the content distributing side.

Career Highlights

Koichi Maari is currently employed at Sony Corporation, where he continues to innovate in the realm of digital technology. His work has been instrumental in developing systems that facilitate secure and efficient digital content distribution.

Collaborations

Some of his notable coworkers include Akira Tanaka and Kenshiro Arase, who have collaborated with him on various projects within the company.

Conclusion

Koichi Maari's contributions to digital content distribution have paved the way for advancements in how digital media is managed and consumed. His innovative patents reflect a deep understanding of technology and its applications in the modern world.

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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