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For the Inventor, By the Inventor

Saitama, Japan

Osamu Kawakubo

This inventor holds 10 USPTO granted patents and 1 published patent application. Top assignee: Sony Corporation. Active years: 1986-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Osamu Kawakubo. Retrieved from https://idiyas.com/inventor/osamu-kawakubo

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 = 90.0

Average Co-Inventor Count = 3.5

ph-index = 7

Forward Citations = 243(Granted Patents)


Company Filing History:

goldMedal10 out of 58,145 
 
Sony Corporation
 patents

Years Active: 1986-2011

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10 patents (USPTO):Explore Patents
1. 7940606 - Signal detecting device and signal detecting method (2011-05-10),
2. 6418103 - Initializing a phase-changing optical recording medium using a laser including a high speed shutter (2002-07-09),
3. 6312780 - Optical recording medium (2001-11-06),
4. 6246656 - Reduced thickness of a light transmissive layer for a high density optical disc (2001-06-12),
5. 6023451 - Optical recording medium and optical disk apparatus (2000-02-08),
6. 5972459 - Optical recording medium and optical disk apparatus (1999-10-26),
7. 5923639 - Phase-change optical recording medium having an additive related to the (1999-07-13),
8. 4972337 - Device for controlling rotation of a magnet used in a magneto-optical (1990-11-20),
9. 4771347 - Magneto-optical recording system (1988-09-13),
10. 4600397 - Method of producing discharge display device (1986-07-15),

Title: The Innovations of Osamu Kawakubo

Introduction

Osamu Kawakubo is a prominent inventor based in Saitama, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 10 patents. His work primarily focuses on signal detection devices and optical recording mediums, showcasing his expertise in advanced technologies.

Latest Patents

Kawakubo's latest patents include a signal detecting device and a signal detecting method. This innovative device features a semiconductor substrate and a near-field light generating section that produces near-field light near the interface with the semiconductor substrate. Additionally, it incorporates a light source that outputs light with a wavelength corresponding to photon energy about half as large as the band-gap energy of the semiconductor material. The current detecting unit is designed to detect photocurrent generated in the semiconductor substrate when near-field light is produced.

Another notable patent involves initializing a phase-changing optical recording medium using a laser equipped with a high-speed shutter. This apparatus allows for the initialization of an optical recording medium with stability and ease, without the need for focus servo means. The laser beam emitted from the source is directed at a recording layer in an amorphous state, transforming it into a crystalline state, which is essential for recording and reproducing information signals.

Career Highlights

Osamu Kawakubo has had a distinguished career at Sony Corporation, where he has been instrumental in developing cutting-edge technologies. His innovative approaches have led to advancements in both signal detection and optical recording mediums, making significant impacts in the industry.

Collaborations

Kawakubo has collaborated with notable colleagues, including Toshiyuki Kashiwagi and Koichi Yasuda. Their combined expertise has contributed to the successful development of various technologies and patents.

Conclusion

Osamu Kawakubo's contributions to the field of semiconductor technology and optical recording mediums highlight his innovative spirit and dedication to advancing technology. His patents reflect a commitment to improving signal detection and recording processes, making him a key figure in his field.

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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