Tokyo, Japan

Sachio Hasushita

This inventor holds 50 USPTO granted patents, primarily in Optical Finder Systems (CPC class 3596). Top assignees: Asahi Kogaku Kogyo Kabushiki Kaisha, Asahi Kogaku Kogyo K.k., Asahi Kogaku Kabushiki Kaisha. Active years: 1993-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Sachio Hasushita. Retrieved from https://idiyas.com/inventor/sachio-hasushita

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 = 2.0

ph-index = 9

Forward Citations = 281(Granted Patents)

Forward Citations (Not Self Cited) = 255(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Tokyo, JP (1993 - 2000)
  • Hokkaido, JP (1998 - 2001)
  • Saitama, JP (2000 - 2001)
  • Saitama-ken, JP (2000 - 2001)

Company Filing History:


Years Active: 1993-2001

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Areas of Expertise:
Optical Finder
Zoom Lens
Real-Image Viewfinder
Diopter Adjustment
Camera Finder System
High-Powered Zoom
Aspheric Lens
Variable Power Finder
Compact Structure
Dual Image Coincidence
Finder Optical System
Prism Technology
50 patents (USPTO):Explore Patents

Title: **The Innovative Journey of Sachio Hasushita**

Introduction

Sachio Hasushita, a prominent inventor based in Tokyo, Japan, has significantly contributed to the field of optical devices with an impressive portfolio of 50 patents. His inventions showcase pioneering advancements in imaging technology, enhancing the functionalities of cameras and optical systems.

Latest Patents

Among his most recent patents are:

1. **View Finder Device Having Compact Structure**: This innovative device features a Poro prism and a first optical system positioned adjacent to the Poro prism. The design allows for an electro-developing recording medium to move seamlessly through a dedicated passage. By integrating a relay optical system, Hasushita ensures that the eye point is separated from the first optical system, leading to a more efficient and lower-profile finder optical design.

2. **Dual Image Coincidence Type Finder System**: This invention presents a dual image finder system for cameras, which forms a composite dual image within the finder field. A light deflecting system is employed to adjust the relative displacement between these superimposed images, enhancing the user experience by adapting according to object distances.

Career Highlights

Hasushita has made significant strides in his career while working with Asahi Kogaku Kogyo, known for its focus on optical innovations. His role at the company reflects his commitment to enhancing imaging technologies through inventive solutions.

Collaborations

Throughout his career, Hasushita has collaborated with notable individuals such as Takayuki Ito and Tetsuya Abe. These partnerships have facilitated the exchange of ideas and led to groundbreaking advancements in optical device design and technology.

Conclusion

Sachio Hasushita exemplifies the spirit of innovation with his extensive contributions to the field of optical devices. His inventions not only underscore his expertise but also demonstrate the impact of collaborative efforts in achieving technological advancements. The legacy of his work continues to inspire future generations of inventors in the realm of imaging 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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