Yokohama, Japan

Kazunori Ito

This inventor holds 37 USPTO granted patents and 4 EPO patents, primarily in Optical Recording Medium. Top assignee: Ricoh Company, Ltd.. Active years: 1998-2012.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazunori Ito. Retrieved from https://idiyas.com/inventor/kazunori-ito

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


% Patents Active = 37.8


Average Co-Inventor Count = 6.4

ph-index = 7

Forward Citations = 197(Granted Patents)


Location History:

  • Kakogawa, JP (1998 - 1999)
  • Kanagawa, JP (2003 - 2011)
  • Yokohama, JP (2004 - 2012)

Company Filing History:


Years Active: 1998-2012

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Areas of Expertise:
Optical Recording Medium
Phase-Change Technology
Recording Method
Optical Information
Manufacturing Method
Sputtering Target
Optical Disk
Information Reproduction
Multilayer Optical Disk
Film-Formation Apparatus
Optical Recording Apparatus
37 patents (USPTO):Explore Patents

Title: **Kazunori Ito: Innovating Optical Recording Technology**

Introduction

Kazunori Ito, based in Yokohama, Japan, is a prominent inventor with an impressive portfolio of 37 patents. His expertise lies primarily in the field of optical recording media, where he has made significant contributions to technology advancement.

Latest Patents

Among his latest inventions are two groundbreaking patents for optical recording media. The first patent focuses on an optical recording medium featuring a recording layer made of a phase-change recording material that contains elements such as Gallium (Ga), Antimony (Sb), Tin (Sn), and Germanium (Ge). This invention is designed to operate efficiently within a transfer linear velocity range of 20 m/s to 30 m/s. It successfully incorporates the optimal refractive indices and extinction coefficients for both crystalline and amorphous states, ensuring effective data recording.

The second patent details an optical recording medium that integrates multiple layers, including a first protective layer, a recording layer, a second protective layer, and a reflective layer. This innovative medium employs a phase-change material and specifies various chemical compositions that improve its performance.

Career Highlights

Kazunori Ito has a notable career at Ricoh Company, Ltd., where he plays a vital role in research and development related to optical technologies. His dedication to innovation has continually placed him at the forefront of advancements in this domain.

Collaborations

Throughout his career, Ito has collaborated with esteemed colleagues, including Nobuaki Onagi and Hajime Yuzurihara. These partnerships have fostered a collaborative atmosphere of creative problem-solving and research that enhances their collective contributions to the field.

Conclusion

Kazunori Ito’s commitment to developing advanced optical recording media has positioned him as a leading inventor in the industry. With a rich portfolio of patents demonstrating his inventive prowess, Ito continues to impact the science of data storage and retrieval significantly. His work reflects the ongoing evolution of technology and innovation in the optical recording sector.

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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