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For the Inventor, By the Inventor

Moriya, Japan

Reiji Tamura

This inventor holds 10 USPTO granted patents. Top assignees: Hitachi Maxell, Limited, Hitachi, Ltd., Other. Active years: 1994-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Reiji Tamura. Retrieved from https://idiyas.com/inventor/reiji-tamura

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

USPTO Granted Patents = 10

% Patents Active = 50.0

Average Co-Inventor Count = 4.5

ph-index = 5

Forward Citations = 79(Granted Patents)


Location History:

  • Ibaraki, JP (1994)
  • Kitasouma-gun, JP (1997 - 2004)
  • Moriya, JP (2002 - 2011)

Company Filing History:

goldMedal7 out of 1,112 
 
Hitachi Maxell, Limited
 patents
silverMedal1 out of 42,731 
 
Hitachi, Ltd.
 patents
bronzeMedal3 out of 834,513 
Other
 patents
where one patent can have more than one assignee

Years Active: 1994-2011

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10 patents (USPTO):Explore Patents
1. 8009547 - Optical recording and reproducing apparatus capable of identifying the type of optical disc based on reflectance, and reproducing method for optical disc (2011-08-30),
2. 7505392 - Optical disk with a plurality of radially extending marks for recording reflectance data of the optical disk (2009-03-17),
3. 7236447 - Optical disk, method of playing optical disk, and optical disk drive (2007-06-26),
4. 7033659 - Optical information recording medium and method of recording and reproducing information on and from optical information recording medium (2006-04-25),
5. 6806030 - Information recording medium and method for manufacturing information recording medium (2004-10-19),
6. 6781926 - Magneto-optical head having heat sink layer (2004-08-24),
7. 6709801 - Information recording medium (2004-03-23),
8. 6383595 - Information recording medium (2002-05-07),
9. 5688574 - Optical recording medium (1997-11-18),
10. 5368986 - Information recording media, manufacturing method for the same, and (1994-11-29),

Title: Reiji Tamura: Innovator in Optical Recording Technology

Introduction

Reiji Tamura is a prominent inventor based in Moriya, Japan. He has made significant contributions to the field of optical recording technology, holding a total of 10 patents. His work focuses on enhancing the efficiency and reliability of optical disc systems.

Latest Patents

Among his latest patents is an innovative optical recording and reproducing apparatus capable of identifying the type of optical disc based on reflectance. This technology allows for the optimization of the amplification factor of the reproduced signal by utilizing information about the reflectance recorded on the optical disc. The design includes a first area for user information and a second area with radially extending marks that facilitate quick and reliable reproduction of control and user data.

Another notable patent involves an optical disk that also features a first area for user information and a second area for recording reflectance data. This invention aims to improve the reliability of data reproduction without relying on the relationship between the reflectances of different areas of the optical disk.

Career Highlights

Reiji Tamura has worked with notable companies, including Hitachi Maxell, Limited. His experience in these organizations has contributed to his expertise in optical technologies and innovations.

Collaborations

Throughout his career, Tamura has collaborated with esteemed colleagues such as Yoshihiro Ikari and Motoyasu Terao. These partnerships have played a crucial role in advancing his research and development efforts.

Conclusion

Reiji Tamura's contributions to optical recording technology have significantly impacted the industry. His innovative patents demonstrate his commitment to enhancing data reliability and efficiency in optical systems.

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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