Ibaraki, Japan

Masatosi Terasaki

This inventor holds 7 USPTO granted patents. Top assignee: Hitachi, Ltd.. Active years: 1981-1997.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masatosi Terasaki. Retrieved from https://idiyas.com/inventor/masatosi-terasaki

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 = 2.0

ph-index = 4

Forward Citations = 58(Granted Patents)


Location History:

  • Shimoinayoshi, JP (1981)
  • Ibaraki, JP (1984 - 1988)
  • Tsuchiura, JP (1996 - 1997)

Company Filing History:


Years Active: 1981-1997

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7 patents (USPTO):Explore Patents

Title: Innovations of Masatosi Terasaki

Introduction

Masatosi Terasaki is a notable inventor based in Ibaraki, Japan. He has made significant contributions to the field of refrigeration and compression technology, holding a total of seven patents. His work has been instrumental in advancing the efficiency and functionality of refrigeration systems.

Latest Patents

One of his latest patents is a compression type refrigerator. This innovative design includes an evaporator, a condenser, a compressor for compressing a refrigerant gas, an oil tank for storing lubricating oil, and an oil supply device connected to the oil tank. The oil supply device is responsible for supplying lubricating oil to the compressor via an oil pump. Notably, the discharge side of the oil pump is connected to the oil tank through an ejector. Additionally, a pipe connected at one end to the evaporator takes out a refrigerant liquid and connects at the other end to a negative pressure generation portion of the ejector.

Another significant patent is for a centrifugal compressor. This design features a diffuser that converts the kinetic energy of fluid discharged from an impeller into pressure. The diffuser includes a shroud, a main shroud, and stationary vanes. The distance between the shroud and the main shroud is smaller at the inlet side of the diffuser than at the outlet side. The stationary vanes are integral with one of the shrouds, forming a free end that enhances the compressor's efficiency.

Career Highlights

Masatosi Terasaki is associated with Hitachi, Ltd., a leading company in technology and innovation. His work at Hitachi has allowed him to develop and refine his inventions, contributing to the company's reputation for excellence in engineering and technology.

Collaborations

Throughout his career, Terasaki has collaborated with notable colleagues such as Keiji Tachibana and Yoshihiko Nakayama. These collaborations have fostered an environment of innovation and creativity, leading to the development of advanced technologies in their field.

Conclusion

Masatosi Terasaki's contributions to refrigeration and compression technology are significant and impactful. His patents reflect a commitment to innovation and efficiency, making him a prominent figure in the industry. His work continues to influence advancements in technology today.

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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