Kai, Japan

Masahide Shirasu

This inventor holds 3 USPTO granted patents. Top assignee: Nisca Corporation. Active years: 1999-2007.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masahide Shirasu. Retrieved from https://idiyas.com/inventor/masahide-shirasu

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

Calculating rank

% Patents Active = 33.3

Average Co-Inventor Count = 4.0

ph-index = 3

Forward Citations = 48(Granted Patents)


Location History:

  • Yamanashi-ken, JP (1999)
  • Kai, JP (2007)

Company Filing History:


Years Active: 1999-2007

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3 patents (USPTO):Explore Patents

Title: Masahide Shirasu: Innovator in Light Adjustment Technology

Introduction

Masahide Shirasu is a notable inventor based in Kai, Japan. He has made significant contributions to the field of light adjustment technology, holding a total of 3 patents. His work primarily focuses on enhancing projector systems through innovative light amount adjusting devices.

Latest Patents

Shirasu's latest patents include a light amount adjusting device and a projector utilizing this technology. The light amount adjusting device is designed to be integrated into a projector that features a light source and a projection device. This device allows for precise control of the light emitted onto a screen, ensuring optimal image quality. The device consists of a substrate with an optical path opening, a blade member for regulating the light quantity, and a driving mechanism to operate the blade member. The blade member is constructed from heat-resistant materials, which minimizes deformation due to heat exposure, thereby maintaining consistent performance.

Another patent focuses on a light quantity adjusting device specifically for projector apparatuses. This device includes a substrate with an optical path opening and a blade guide surface that features level differences. A series of blade members are arranged around the optical path opening, allowing them to rotate and adjust the light quantity effectively. The design incorporates a transmission member and a drive device to facilitate the movement of the blade members, ensuring precise control over the light output.

Career Highlights

Masahide Shirasu is currently employed at Nisca Corporation, where he continues to innovate in the field of projection technology. His work has significantly impacted the efficiency and effectiveness of projectors, making them more adaptable to various lighting conditions.

Collaborations

Shirasu has collaborated with notable colleagues, including Akira Hakozaki and Toshihito Shiina. Their combined expertise has contributed to the advancement of light adjustment technologies in projectors.

Conclusion

Masahide Shirasu's contributions to light adjustment technology have established him as a key figure in the field. His innovative patents and ongoing work at Nisca Corporation continue to influence the development of advanced projection systems.

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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