Musashino, Japan

Tatsuo Izawa

This inventor holds 5 USPTO granted patents. Top assignees: Nippon Telegraph and Telephone Public Corporation, Nippon Telegraph and Telephone Corporation, Sumitomo Electric Industries, Limited. Active years: 1976-1991.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tatsuo Izawa. Retrieved from https://idiyas.com/inventor/tatsuo-izawa

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


% Patents Active = 100.0

Average Co-Inventor Count = 2.7

ph-index = 5

Forward Citations = 195(Granted Patents)


Location History:

  • Musashino, JA (1976)
  • Mito, JA (1977)
  • Musashino, JP (1980 - 1991)

Company Filing History:


Years Active: 1976-1991

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5 patents (USPTO):Explore Patents

Title: Innovations of Tatsuo Izawa

Introduction

Tatsuo Izawa is a notable inventor based in Musashino, Japan. He has made significant contributions to the field of optical waveguides, holding a total of 5 patents. His work has advanced the technology used in optical circuits, showcasing his expertise and innovative spirit.

Latest Patents

One of his latest patents is for a plate plastics optical waveguide. This invention includes a core portion composed of a polymer containing a deuterium atom or a halogen atom, surrounded by a clad portion made of a polymer with a lower refractive index. This design allows for an optical loss of 0.1 dB/cm or less for light with a wavelength of 1.3 µm. Another significant patent is a method for making glass waveguides for optical circuits. This method involves introducing halides of silicon, titanium, boron, phosphorus, or germanium along with oxygen or steam into a reaction vessel. The process results in fine glass particles that are deposited on a substrate and subsequently vitrified into a transparent glass layer. This innovative fabrication method ensures good reproducibility and is suitable for mass production of waveguides.

Career Highlights

Throughout his career, Tatsuo Izawa has worked with prominent companies such as Nippon Telegraph and Telephone Public Corporation and Sumitomo Electric Industries Limited. His experience in these organizations has contributed to his development as a leading inventor in the field of optical technology.

Collaborations

Tatsuo has collaborated with notable individuals in his field, including Tadashi Miyashita and Fumiaki Hanawa. These partnerships have likely enriched his work and led to further advancements in optical waveguide technology.

Conclusion

Tatsuo Izawa's contributions to the field of optical waveguides demonstrate his innovative capabilities and commitment to advancing technology. His patents reflect a deep understanding of materials and processes that enhance optical performance.

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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