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For the Inventor, By the Inventor

Tokyo, Japan

Jun-ichi Takahashi

This inventor holds 8 USPTO granted patents and 1 published patent application. Top assignee: Nec Corporation. Active years: 1997-1998.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Jun-ichi Takahashi. Retrieved from https://idiyas.com/inventor/jun-ichi-takahashi

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 = 100.0

Average Co-Inventor Count = 1.2

ph-index = 4

Forward Citations = 61(Granted Patents)


Company Filing History:

goldMedal8 out of 36,718 
 
Nec Corporation
 patents

Years Active: 1997-1998

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8 patents (USPTO):Explore Patents
1. 5838651 - Optical read-out head capable of improved read-out of media with (1998-11-17),
2. 5802036 - Optical head device utilizing super-resolution technique (1998-09-01),
3. 5761176 - Optical head device with optically variable aperture for disks with (1998-06-02),
4. 5748601 - Optical head for use with high density optical disk having multi-valued (1998-05-05),
5. 5724334 - Optical head device utilizing super-resolution technique (1998-03-03),
6. 5708642 - Optical head device with lens system for increasing beam diameter of (1998-01-13),
7. 5638353 - Optical head device (1997-06-10),
8. 5612942 - Optical head (1997-03-18),

Title: Innovations of Jun-ichi Takahashi

Introduction

Jun-ichi Takahashi is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of optical technology, holding a total of 8 patents. His work focuses on improving the performance of optical read-out heads and devices, which are essential in data storage and retrieval.

Latest Patents

One of his latest patents involves an optical read-out head capable of improved read-out of media. This invention addresses fluctuations in the reproduction signal-to-noise ratio, allowing for consistent performance in reproducing reflected light. The optical read-out head utilizes a multi-value information optical recording medium with varying pit heights. The design includes a photodetector that detects reflected light after it passes through an objective lens and an optical light separating element.

Another notable patent is the optical head device utilizing a super-resolution technique. This device comprises a light source, a super-resolution filter, an objective lens system, and a photo-detecting system. The super-resolution filter ensures a predetermined light intensity distribution, enhancing the data recording and retrieval process. The objective lens system is designed to handle both light reflection and transmission types, significantly reducing signal deterioration even at high data recording densities.

Career Highlights

Jun-ichi Takahashi is currently associated with NEC Corporation, where he continues to innovate in optical technologies. His work has been instrumental in advancing the capabilities of optical devices, making them more efficient and reliable.

Collaborations

He has collaborated with notable coworkers such as Masahiko Sato and Akitomo Ohba, contributing to various projects that enhance optical technology.

Conclusion

Jun-ichi Takahashi's contributions to optical technology through his patents and work at NEC Corporation highlight his role as a leading inventor in the field. His innovations continue to impact the way data is recorded and retrieved, showcasing the importance of his work in modern technology.

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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