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For the Inventor, By the Inventor

Tokyo, Japan

Yoshi Hirashima

This inventor holds 6 USPTO granted patents. Top assignee: Central Glass Company, Limited. Active years: 1997-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshi Hirashima. Retrieved from https://idiyas.com/inventor/yoshi-hirashima

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

USPTO Granted Patents = 6

% Patents Active = 100.0

Average Co-Inventor Count = 4.5

ph-index = 4

Forward Citations = 86(Granted Patents)


Location History:

  • Kawagoe, JP (1997)
  • Tokyo, JP (1999 - 2001)
  • Nerima, JP (1999 - 2001)

Company Filing History:

goldMedal6 out of 1,010 
 
Central Glass Company, Limited
 patents

Years Active: 1997-2001

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6 patents (USPTO):Explore Patents
1. 6322606 - Coated granular fertilizer and method for producing same (2001-11-27),
2. 6176891 - Coated granular fertilizer and method for producing same (2001-01-23),
3. 6174955 - Water-based fluorine-containing paint (2001-01-16),
4. 5859123 - Water-based fluorine-containing emulsion (1999-01-12),
5. 5856394 - Water-based fluorine-containing paint (1999-01-05),
6. 5684074 - Fluorine-containing coating composition (1997-11-04),

Title: Yoshi Hirashima: Innovator in Coated Granular Fertilizers

Introduction

Yoshi Hirashima is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of agricultural technology, particularly in the development of coated granular fertilizers. With a total of 6 patents to his name, Hirashima's work focuses on enhancing the efficiency of nutrient release in fertilizers.

Latest Patents

Hirashima's latest patents include innovative methods for producing coated granular fertilizers. One notable invention involves a coated granular fertilizer that features a film covering the fertilizer granules. This film is made from a polyurethane resin, which is created through a multi-step process involving the reaction of an aromatic polyisocyanate with a polyol component, such as castor oil. The process also includes curing the prepolymer with additional polyol components to form a durable resin. Another patent describes a similar coated granular fertilizer that incorporates urethane resin and aqueous-fluid-absorbing particles, significantly improving the regulation of nutrient release.

Career Highlights

Yoshi Hirashima is currently associated with Central Glass Company, Limited, where he continues to innovate in the field of fertilizers. His work has been instrumental in advancing agricultural practices and improving crop yields through better nutrient management.

Collaborations

Hirashima has collaborated with notable colleagues, including Kazuhiko Maeda and Kentaro Tsutsumi, to further enhance the development of agricultural technologies.

Conclusion

Yoshi Hirashima's contributions to the field of coated granular fertilizers demonstrate his commitment to innovation in agriculture. His patents reflect a deep understanding of material science and its application in enhancing plant nutrition.

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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