Akita, Japan

Tsukasa Maruyama

This inventor holds 17 USPTO granted patents and 1 published patent application, primarily in Optical Devices. Top assignees: Dowa Electronics Materials Co., Ltd., Dowa Mining Co., Ltd.. Active years: 1999-2024.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tsukasa Maruyama. Retrieved from https://idiyas.com/inventor/tsukasa-maruyama-112qu56l

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

USPTO Granted Patents = 17 

% Patents Active = 64.7

Average Co-Inventor Count = 1.4

ph-index = 5

Forward Citations = 224(Granted Patents)


Location History:

  • Tokyo, JP (2002 - 2012)
  • Akita, JP (1999 - 2021)

Company Filing History:


Years Active: 1999-2024

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Areas of Expertise:
Optical Semiconductor
Light-Emitting Diode
Anti-Reflection Film
Photodetection
Optical Communication
Manufacturing Method
Lamp Apparatus
Deep Ultraviolet
Light Emission
Component Device
17 patents (USPTO):Explore Patents

Title: The Innovations of Tsukasa Maruyama: Pioneering Advances in Optical Semiconductor Devices

Introduction: Tsukasa Maruyama, an accomplished inventor based in Akita, Japan, has made significant contributions to the field of optical semiconductors. With a remarkable portfolio of 17 patents, Maruyama has established himself as a key figure in the development of innovative technologies that enhance light-emitting devices.

Latest Patents: Among Maruyama's latest inventions are two notable patents: the "Method of Manufacturing Optical Semiconductor Device" and the "Light-Emitting Element Lamp and Method for Manufacturing the Same." The first patent details a sophisticated method for manufacturing optical semiconductor devices, which involves carefully controlled steps such as mounting an optical semiconductor chip, storing it in a dry atmosphere, and encapsulating it with a light transparent window in a low oxygen concentration environment. This process ensures the utmost precision in protecting the semiconductor chip.

The second patent introduces a light-emitting element lamp designed to optimize light extraction efficiency. This innovative lamp features a semiconductor layer on a substrate, complemented by a spherical first lens and a concave second lens, which work together to enhance the performance of the light-emitting element.

Career Highlights: Throughout his career, Tsukasa Maruyama has worked with leading companies such as Dowa Electronics Materials and Dowa Mining. His experiences in these organizations have enabled him to refine his expertise in semiconductor technology, leading to groundbreaking innovations that push the boundaries of modern optics.

Collaborations: Maruyama has collaborated with talented coworkers such as Tetsuya Ikuta and Masahiro Gotoh, exchanging ideas and contributing to projects that have furthered advancements in optical semiconductor devices. Their teamwork exemplifies the spirit of innovation and dedication to excellence in the field.

Conclusion: Tsukasa Maruyama's contributions to optical semiconductor technology are invaluable. Through his innovative patents and collaborative efforts, he continues to influence the future of light-emitting devices. His work exemplifies the spirit of innovation that drives progress in the field of 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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