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For the Inventor, By the Inventor

Tokyo, Japan

Shuichi Okubo

This inventor holds 8 USPTO granted patents. Top assignees: Nec Corporation, Japan Energy Corporation. Active years: 1996-2005.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shuichi Okubo. Retrieved from https://idiyas.com/inventor/shuichi-okubo

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

USPTO Granted Patents = 8

% Patents Active = 62.5

Average Co-Inventor Count = 1.3

ph-index = 5

Forward Citations = 61(Granted Patents)


Location History:

  • Toda, JP (1998)
  • Tokyo, JP (1996 - 2005)

Company Filing History:

goldMedal5 out of 36,676 
 
Nec Corporation
 patents
silverMedal3 out of 130 
 
Japan Energy Corporation
 patents

Years Active: 1996-2005

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8 patents (USPTO):Explore Patents
1. 6839318 - Optical information recording medium having ultraviolet-curing resin and adhesive layers and method of manufacturing same (2005-01-04),
2. 6657946 - Phase change type optical disk having different reflectances at crystalline and amorphous states (2003-12-02),
3. 6646978 - Optical storage medium with improved substrate structure to provide uniform signal quality (2003-11-11),
4. 6203877 - Optical information recording medium (2001-03-20),
5. 6064642 - Phase-change type optical disk (2000-05-16),
6. 5731994 - Method of packing particles into vessels and apparatus therefor (1998-03-24),
7. 5641230 - Method of determining cloud points and cloud point meter (1997-06-24),
8. 5565978 - Total-reflection type refractive index sensor (1996-10-15),

Title: The Innovations of Shuichi Okubo

Introduction

Shuichi Okubo is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of optical information recording, holding a total of 8 patents. His work has advanced the technology used in optical disks and recording mediums.

Latest Patents

One of his latest patents is an optical information recording medium that features ultraviolet-curing resin and adhesive layers. This invention involves a recording layer formed on a substrate, with an ultraviolet-curing resin layer applied on top, and a light-transmissible layer attached through an adhesive layer. The hardness of the ultraviolet-curing resin is preferably equal to HB or more, with a film thickness ranging from 2 µm to 40 µm. The total thickness of the ultraviolet-curing resin layer, adhesive layer, and light-transmissible layer is set between 20 µm and 150 µm.

Another notable patent is for a phase change type optical disk that exhibits different reflectances in crystalline and amorphous states. This disk features a multilayered structure that includes a lower dielectric layer, recording layer, upper dielectric layer, and reflective layer. The reflectance of the disk when the recording layer is crystalline is lower than when it is in an amorphous state, specifically for light wavelengths between 380 nm and 430 nm.

Career Highlights

Shuichi Okubo has worked with notable companies such as NEC Corporation and Japan Energy Corporation. His experience in these organizations has contributed to his expertise in optical technologies and innovations.

Collaborations

Throughout his career, Okubo has collaborated with talented individuals, including Kazunari Naya and Tatsunori Ide. These partnerships have fostered a creative environment that has led to groundbreaking advancements in optical recording technologies.

Conclusion

Shuichi Okubo's contributions to the field of optical information recording are significant and impactful. His innovative patents and collaborations highlight his expertise and dedication 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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