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For the Inventor, By the Inventor

Osaka, Japan

Katsumi Kawahara

This inventor holds 18 USPTO granted patents and 2 EPO patents, primarily in Optical Information Media. Top assignees: Matsushita Electric Industrial Co., Ltd., Daikin Industries, Ltd.. Active years: 1992-2006.

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

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 = 4.3

ph-index = 10

Forward Citations = 239(Granted Patents)


Location History:

  • Kadoma, JP (1995 - 2000)
  • Osaka, JP (1992 - 2006)

Company Filing History:

goldMedal17 out of 27,375 
 
Matsushita Electric Industrial Co., Ltd.
 patents
silverMedal1 out of 4,497 
 
Daikin Industries, Ltd.
 patents

Years Active: 1992-2006

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Areas of Expertise:
Optical Information Recording
Manufacturing Method
Data Erasing
Reproduction Techniques
Initialization Process
Phase Change Recording
Protection Layers
Rotary Compressor
Recording Apparatus
Erasable Optical Media
Production Process
18 patents (USPTO):Explore Patents
1. 7037413 - Optical information recording medium, producing method thereof and method of recording/erasing/reproducing information (2006-05-02),
2. 6858277 - Information recording medium and method for manufacturing the same (2005-02-22),
3. 6821707 - Optical information recording medium, producing method thereof and method of recording/erasing/reproducing information (2004-11-23),
4. 6807142 - Optical information recording medium and method for initializing the same (2004-10-19),
5. 6503690 - Optical information recording medium, method for producing the same, and method for recording and reproducing optical information (2003-01-07),
6. 6268034 - Optical information recording medium and method for producing the same, method for recording and reproducing information thereon and recording/reproducing apparatus (2001-07-31),
7. 6153063 - Optical information recording medium, producing method thereof and (2000-11-28),
8. 6077058 - Rotary compressor (2000-06-20),
9. 6060221 - Method and apparatus for initializing optical recording medium (2000-05-09),
10. 5753334 - Optical recording medium (1998-05-19),
11. 5684778 - Initialization process for a phase change recording medium with a zero (1997-11-04),
12. 5681632 - Optical information recording medium (1997-10-28),
13. 5587216 - Optical recording medium (1996-12-24),
14. 5453346 - Optical information recording medium having protection layers with (1995-09-26),
15. 5395669 - Optical record medium (1995-03-07),

Title: Katsumi Kawahara: Innovator in Optical Information Recording

Introduction

Katsumi Kawahara is a prominent inventor based in Osaka, Japan. He has made significant contributions to the field of optical information recording, holding a total of 18 patents. His work focuses on developing advanced materials and methods for recording and reproducing information.

Latest Patents

Kawahara's latest patents include an optical information recording medium and a method for recording, erasing, and reproducing information. This invention provides an optical information medium with excellent weather resistance and repeating characteristics. The medium features a barrier layer composed of GeN or GeON, along with various elements that enhance its performance. Another notable patent involves an information recording medium that utilizes a recording material layer capable of reversible phase changes, ensuring consistent recording and reproduction characteristics.

Career Highlights

Throughout his career, Kawahara has worked with notable companies such as Matsushita Electric Industrial Co., Ltd. and Daikin Industries, Ltd. His experience in these organizations has allowed him to refine his expertise in optical technologies and materials science.

Collaborations

Kawahara has collaborated with esteemed colleagues, including Noboru Yamada and Shigeaki Furukawa. These partnerships have contributed to the advancement of his innovative projects and patents.

Conclusion

Katsumi Kawahara's contributions to optical information recording have established him as a key figure in the field. His innovative patents and collaborations reflect his commitment to advancing technology in this area.

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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