Yokohama, Japan

Hiroshi Tomita

This inventor holds 15 USPTO granted patents and 2 EPO patents, primarily in Optical Technology. Top assignees: Ntt Electronics Corporation, Hitachi, Ltd., Nippon Telegraph and Telephone Corporation. Active years: 1986-2016.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroshi Tomita. Retrieved from https://idiyas.com/inventor/hiroshi-tomita-k00d6ky5

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

Calculating rank

% Patents Active = 73.3


Average Co-Inventor Count = 3.3

ph-index = 5

Forward Citations = 108(Granted Patents)


Company Filing History:


Years Active: 1986-2016

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Areas of Expertise:
Optical Circuit
Optical Module
Semiconductor Modulator
Wavelength-Selective Switch
Microinjection Device
Video Camera
Charge Receipt System
Iron Dispersant
Catheter-Tip Micromanometer
15 patents (USPTO):Explore Patents

Title: The Innovations of Hiroshi Tomita: A Focused Vision in Optical Technology

Introduction: Hiroshi Tomita, based in Yokohama, Japan, is a distinguished inventor recognized for his significant contributions to optical technology. With an impressive portfolio of 15 patents, he has made remarkable strides in the fields of optical circuits and modules. His inventive spirit and technical expertise have established him as a key figure in the innovation landscape.

Latest Patents: Among his latest inventions, Tomita has developed a novel optical circuit which features a transparent plate, allowing light to transmit effectively. This circuit includes a light shielding plate adhered to the transparent surface, designed with an opening that facilitates the passage of incident light. Notably, the aspect facing the opening incorporates overhang-shaped projections that enhance functionality. Additionally, Tomita has introduced an optical module that adeptly mitigates optical axis displacement caused by thermal changes, thereby preventing property degradation. This innovative module comprises a planar lightwave circuit, a fixing mount, and an auxiliary mount which work in unison to ensure optimal performance in various optical applications.

Career Highlights: Throughout his career, Tomita has been associated with renowned companies such as NTT Electronics Corporation and Hitachi, Ltd. His innovative work at these firms has significantly advanced the understanding and application of optical technologies.

Collaborations: In his professional journey, Tomita has collaborated with esteemed colleagues, notably including Manabu Wakabayashi. Together, they have propelled forward the boundaries of optical research and development, contributing to the success of their projects and patents.

Conclusion: Hiroshi Tomita's journey as an inventor showcases his unwavering commitment to innovation in optical technology. His 15 patents stand as a testament to his ingenuity and the impact of his work on the industry. As advancements in optical systems continue to evolve, Tomita's contributions will undoubtedly play a critical role in shaping the future of this dynamic 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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