Tokyo, Japan

Tatsuhiko Sugai

This inventor holds 2 USPTO granted patents. Top assignee: Gakken Co., Ltd.. Active years: 1977-1978.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tatsuhiko Sugai. Retrieved from https://idiyas.com/inventor/tatsuhiko-sugai

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 5.0

ph-index = 1

Forward Citations = 3(Granted Patents)


Company Filing History:


Years Active: 1977-1978

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2 patents (USPTO):Explore Patents

Title: Innovations by Tatsuhiko Sugai

Introduction

Tatsuhiko Sugai is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of audiovisual educational technology. With a total of two patents to his name, Sugai's work focuses on enhancing the functionality and quality of magnetic sheet recording and playback systems.

Latest Patents

Sugai's latest patents include an electric control system for magnetic sheet recording and reproducing. This invention features a recording-reproducing apparatus that utilizes a rectangular sheet of paper with a spiral magnetic track on one surface. The printed material on the opposite surface serves educational purposes. The system is designed to electrically control the operation of the apparatus, incorporating switches for playback, recording, stop, and backspacing operations. These switches are connected to a reversible drive motor through a control circuit that includes a relay with multiple contact sets. The control circuit also has mechanisms to automatically suspend the motor's rotation when a stop signal is generated during playback.

Another significant patent is the magnetic sheet player with an adjustable inclined magnetic head. This teaching machine allows for the replaceable mounting of a rectangular sheet with a downwardly directed spiral magnetic track. The printed material on the other surface provides visual support for the audio information prerecorded on the track. A movable magnetic head follows the track for playback or recording, and a hinged holder frame secures the sheet to the machine casing. This design improves playback quality by ensuring closer contact between the head and the sheet.

Career Highlights

Sugai is associated with Gakken Co., Ltd., a company known for its innovative educational products. His work has contributed to advancements in teaching technologies, particularly in the realm of audiovisual aids.

Collaborations

Some of Sugai's notable coworkers include Masao Iwaoka and Yosuke Igeta. Their collaborative efforts have likely played a role in the development of Sugai's inventions.

Conclusion

Tatsuhiko Sugai's contributions to the field of educational technology through his patents demonstrate his innovative spirit and commitment to enhancing learning experiences. His work continues to influence the way audiovisual materials are utilized in educational settings.

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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