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For the Inventor, By the Inventor

Toyama, Japan

Yoshitaka Nagai

This inventor holds 10 USPTO granted patents. Top assignee: Yoshida Kogyo K.k.. Active years: 1986-1995.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshitaka Nagai. Retrieved from https://idiyas.com/inventor/yoshitaka-nagai-kpy4ccu0

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

Calculating rank
USPTO Granted Patents = 10

% Patents Active = 100.0

Average Co-Inventor Count = 2.2

ph-index = 4

Forward Citations = 32(Granted Patents)


Location History:

  • Asahi, JP (1991)
  • Toyama, JP (1986 - 1995)

Company Filing History:

goldMedal10 out of 1,145 
 
Yoshida Kogyo K.k.
 patents

Years Active: 1986-1995

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10 patents (USPTO):Explore Patents
1. 5452756 - Cooling method of continous casting (1995-09-26),
2. 5431214 - Apparatus for continuous casting (1995-07-11),
3. 5342575 - Process for producing billet of powdery alloy by special arrangement of (1994-08-30),
4. 5228496 - Cast starting method in horizontal continuous casting (1993-07-20),
5. 5205344 - Horizontal continuous casting device (1993-04-27),
6. 4993476 - Secondary cooling device for a horizontal continuous casting apparatus (1991-02-19),
7. 4982779 - Shut-off device for use in a guide conduit of a horizontal continuous (1991-01-08),
8. 4686754 - Method for manufacturing a heat insulating shaped bar (1987-08-18),
9. 4620355 - Method for manufacturing a heat insulating sash bar (1986-11-04),
10. 4563322 - Method and apparatus for continuously filling grooves in sash bars with (1986-01-07),

Title: Innovations by Yoshitaka Nagai in Continuous Casting Technology.

Introduction

Yoshitaka Nagai is a prominent inventor based in Toyama, Japan. He has made significant contributions to the field of continuous casting technology, holding a total of 10 patents. His work focuses on improving the cooling methods used in the casting process, which is crucial for producing high-quality ingots.

Latest Patents

One of his latest patents is a cooling method for continuous casting. This innovation involves a cooling mold equipped with first and second water cooling jackets. The primary cooling water jetting mouth is strategically positioned 15 to 40 mm from the meniscus of the molten metal. Additionally, a secondary cooling water jetting mouth is located 20 to 45 mm from the primary jet's contact point on the ingot. The angles of these jetting mouths are set at 15 to 30 degrees and 30 to 60 degrees relative to the ingot surface. This design allows the primary jet to create a transition boiling zone and a film boiling zone, while the secondary jet helps to break out vapor films, promoting nucleate boiling. This results in a firmer solidified shell in the ingot, ensuring effective cooling and high-quality casting.

Another notable patent is an apparatus for continuous casting, which also features a cooling mold with similar water cooling jackets and jetting mouths. The primary and secondary jets work together to establish boiling zones and improve the cooling process. A wiper is included downstream to remove excess cooling water from the ingot's surface, further enhancing the efficiency of the casting process.

Career Highlights

Yoshitaka Nagai is associated with Yoshida Kogyo K.K., where he has been instrumental in advancing casting technologies. His innovative approaches have led to improvements in the quality and efficiency of ingot production.

Collaborations

He has collaborated with notable coworkers such as Norio Ohatake and Makoto Arase, contributing to the development of advanced casting techniques.

Conclusion

Yoshitaka Nagai's contributions to continuous casting technology through his innovative patents have significantly impacted the industry. His work continues to pave the way for advancements in the production of high-quality ingots.

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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