Ora, Japan

Yoshirou Ishizaka

This inventor holds 4 USPTO granted patents, plus 1 CIPO patent. Top assignee: Sanyo Electric Co., Ltd.. Active years: 1989-1997.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshirou Ishizaka. Retrieved from https://idiyas.com/inventor/yoshirou-ishizaka

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 = 5.5

ph-index = 2

Forward Citations = 32(Granted Patents)


Location History:

  • Ora, JP (1989 - 1991)
  • of Gunma, JP (1991)
  • Ouragun Gunmaken, JP (1997)

Company Filing History:


Years Active: 1989-1997

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4 patents (USPTO):Explore Patents

Title: Innovations by Yoshirou Ishizaka

Introduction

Yoshirou Ishizaka is a notable inventor based in Ora, Japan. He has made significant contributions to the field of refrigeration technology, holding a total of 4 patents. His work focuses on improving the efficiency and functionality of refrigerating apparatuses.

Latest Patents

One of his latest patents is a refrigerating apparatus designed to reduce the start noise of the compressor. This innovative apparatus includes a compressor, condenser, capillary tube, and evaporator, all connected in a closed loop. It features a solenoid valve installed between the condenser and capillary tube, along with a control unit that manages the operation of the compressor and solenoid valve. This design allows the solenoid valve to close before the compressor stops, effectively minimizing noise.

Another significant patent is for a heat insulating structure and its manufacturing method. This structure consists of a lower case with an opening for goods insertion and an upper case with a similar opening. The design incorporates inner and outer boxes that create a gap for insulation. It includes pour holes for injecting foam heat insulating material, which solidifies to enhance the insulation properties of the structure.

Career Highlights

Yoshirou Ishizaka is currently employed at Sanyo Electric Co., Ltd., where he continues to innovate in the field of refrigeration. His work has contributed to advancements in energy efficiency and noise reduction in refrigeration systems.

Collaborations

He has collaborated with notable coworkers, including Hiroshi Naganuma and Kenji Sato, who have also contributed to the development of innovative technologies in their respective fields.

Conclusion

Yoshirou Ishizaka's contributions to refrigeration technology through his patents demonstrate his commitment to innovation and efficiency. His work continues to impact the industry positively, showcasing the importance of inventive solutions in modern 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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