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For the Inventor, By the Inventor

Tochigi, Japan

Hirosaburo Hirano

This inventor holds 10 USPTO granted patents. Top assignees: Showa Aluminum Corporation, Showa Aluminum Kabushiki Kaisha. Active years: 1993-1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hirosaburo Hirano. Retrieved from https://idiyas.com/inventor/hirosaburo-hirano

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

USPTO Granted Patents = 10

% Patents Active = 100.0

Average Co-Inventor Count = 3.0

ph-index = 7

Forward Citations = 161(Granted Patents)


Location History:

  • Utsunomiyashi, JP (1993 - 1995)
  • Tochigi, JP (1993 - 1999)

Company Filing History:

goldMedal8 out of 152 
 
Showa Aluminum Corporation
 patents
silverMedal2 out of 53 
 
Showa Aluminum Kabushiki Kaisha
 patents

Years Active: 1993-1999

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10 patents (USPTO):Explore Patents
1. 5931226 - Refrigerant tubes for heat exchangers (1999-08-03),
2. 5784776 - Process for producing flat heat exchange tubes (1998-07-28),
3. 5749144 - Method of making refrigerant tubes for heat exchangers (1998-05-12),
4. 5730215 - Refrigerant tubes for heat exchangers (1998-03-24),
5. 5638897 - Refrigerant tubes for heat exchangers (1997-06-17),
6. 5553377 - Method of making refrigerant tubes for heat exchangers (1996-09-10),
7. 5386629 - Tube for heat exchangers and a method for manufacturing the tube (1995-02-07),
8. 5280971 - Tubular body having pipe joint member attached thereto with brazing ring (1994-01-25),
9. 5228727 - Tubular body having pipe joint member attached thereto and method of (1993-07-20),
10. 5186250 - Tube for heat exchangers and a method for manufacturing the tube (1993-02-16),

Title: Hirosaburo Hirano: Innovator in Heat Exchanger Technology

Introduction

Hirosaburo Hirano is a notable inventor based in Tochigi, Japan. He has made significant contributions to the field of heat exchanger technology, holding a total of 10 patents. His innovative designs and processes have advanced the efficiency and functionality of refrigerant tubes.

Latest Patents

One of Hirano's latest patents is for refrigerant tubes designed for heat exchangers. This invention features a flat tube with parallel refrigerant passages, upper and lower walls, and multiple reinforcing walls. These reinforcing walls are strategically placed and include communication holes that allow the refrigerant passages to connect. Each wall has an opening ratio of 10 to 40%, optimizing the flow of refrigerant.

Another significant patent involves a process for producing flat heat exchange tubes. This process utilizes a rolling mill with a central work roll and planetary work rolls. The method allows for the creation of a flat heat exchange tube with parallel refrigerant passages, ensuring that the structure is both robust and efficient.

Career Highlights

Hirano has worked with prominent companies in the aluminum industry, including Showa Aluminum Corporation and Showa Aluminum Kabushiki Kaisha. His experience in these organizations has contributed to his expertise in developing advanced heat exchanger technologies.

Collaborations

Throughout his career, Hirano has collaborated with talented individuals such as Yuji Yamamoto and Shinji Ito. These partnerships have fostered innovation and have led to the successful development of various technologies in the field.

Conclusion

Hirosaburo Hirano's contributions to heat exchanger technology through his patents and collaborations highlight his role as a key innovator in the industry. His work continues to influence advancements in the efficiency of refrigerant 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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