Toshimasa Hamai

This inventor holds 13 USPTO granted patents and 1 published patent application, plus 1 CIPO patent and 12 EPO patents. Top assignee: Kao Corporation. Active years: 1990-2015.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshimasa Hamai. Retrieved from https://idiyas.com/inventor/toshimasa-hamai

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

USPTO Granted Patents = 13 (Patent Applications = 1)

% Patents Active = 38.5

CIPO Patents = 1

EPO Patents = 12 (Patent Applications = 9)

Average Co-Inventor Count = 4.7

ph-index = 2

Forward Citations = 23(Granted Patents)

Company Filing History:

13 out of 3,675

Kao Corporation

patents

Years Active: 1990-2015

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13 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 9029444 - Dispersant for hydraulic composition (2015-05-12),

2. 9011596 - Method for producing cured article from hydraulic composition (2015-04-21),

3. 8604103 - Additive composition for hydraulic composition (2013-12-10),

4. 8598255 - Early strengthening agent for hydraulic composition (2013-12-03),

5. 8567703 - Method for producing hydraulic powder (2013-10-29),

6. 8519028 - Early strengthening agent for hydraulic composition (2013-08-27),

7. 8322638 - Method for producing hydraulic powder (2012-12-04),

8. 8263688 - Dispersion-retaining agent for hydraulic composition (2012-09-11),

9. 8235315 - Method for producing hydraulic powder (2012-08-07),

10. 8143332 - Dispersant for hydraulic composition (2012-03-27),

11. 7964682 - Method for producing phosphoric acid ester-based polymer (2011-06-21),

12. 7470733 - Additive for hydraulic compositions (2008-12-30),

13. 4915864 - Aqueous solution composition of strong alkali and nonionic surface (1990-04-10),

Title: The Innovations of Toshimasa Hamai

Introduction

Toshimasa Hamai, based in Wakayama, Japan, is an accomplished inventor with a portfolio of 13 patents. His contributions to the field of hydraulic compositions have advanced industrial applications, proving his expertise and innovative spirit.

Latest Patents

One of Hamai's noteworthy inventions is a dispersant for hydraulic composition. This invention details a unique combination of a polymer and a naphthalenesulfonic acid-formaldehyde condensate, formulated at a specific weight ratio that enhances the properties of hydraulic materials. Another significant patent revolves around a method for producing a cured article from hydraulic composition. This method utilizes glycerol, cement, and water, emphasizing the importance of sulfate ions in achieving optimal conditioning and durability of the hydraulic mixture.

Career Highlights

Toshimasa Hamai works for Kao Corporation, a leading multinational company known for its innovative approaches in various industries. Through his role there, Hamai has successfully contributed to the development of advanced materials, ensuring they meet the industry's rigorous standards and demands.

Collaborations

Hamai collaborates with talented coworkers such as Masaaki Shimoda and Daisuke Hamada, which further enriches the creative environment at Kao Corporation. Together, they explore novel solutions in the realm of hydraulic compositions, pushing boundaries and enhancing functionality.

Conclusion

Toshimasa Hamai's work exemplifies the spirit of innovation in engineering and materials science. His patents not only reflect his technical skill but also his commitment to developing practical solutions that benefit the industry. As he continues to push the envelope, Hamai's contributions will undoubtedly have lasting impacts on hydraulic technology.

Profile summary based on public USPTO records.