Company Filing History:

17 out of 27,375

Matsushita Electric Industrial Co., Ltd.

patents

1 out of 4,270

Daikin Industries, Ltd.

patents

Years Active: 1992-2006

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18 patents (USPTO):Sort by Forward CitationsExplore 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.

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