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For the Inventor, By the Inventor

Tanashi, Japan

Hachiro Kushida

This inventor holds 6 USPTO granted patents. Top assignees: Citizen Watch Company, Ltd., Kabushiki Kaisha Kobe Seiko Sho. Active years: 1976-1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hachiro Kushida. Retrieved from https://idiyas.com/inventor/hachiro-kushida

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

Calculating rank
USPTO Granted Patents = 6

% Patents Active = 100.0

Average Co-Inventor Count = 2.5

ph-index = 4

Forward Citations = 38(Granted Patents)


Location History:

  • Higashi-yamato, JA (1976)
  • Sayama, JP (1983)
  • Saitama, JP (1985 - 1992)
  • Tanashi, JP (1987 - 1999)

Company Filing History:

goldMedal6 out of 2,004 
 
Citizen Watch Company, Ltd.
 patents
silverMedal1 out of 1,101 
 
Kabushiki Kaisha Kobe Seiko Sho
 patents
where one patent can have more than one assignee

Years Active: 1976-1999

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6 patents (USPTO):Explore Patents
1. 5885375 - High strength titanium alloy, product made of the titanium alloy and (1999-03-23),
2. 5091224 - Method of preparation of a surface-coated metal-made ornamental article (1992-02-25),
3. 4640625 - External member for a watch (1987-02-03),
4. 4507184 - Method for finishing matted surface on a metal-made article for personal (1985-03-26),
5. 4375391 - Method for manufacturing bicolored polyhedral body of aluminum (1983-03-01),
6. 3963589 - Process for the manufacture of a decorative aluminum product (1976-06-15),

Title: Hachiro Kushida: Innovator in Titanium Alloys

Introduction

Hachiro Kushida is a notable inventor based in Tanashi, Japan. He has made significant contributions to the field of materials science, particularly in the development of titanium alloys. With a total of 6 patents to his name, Kushida's work has had a lasting impact on various industries.

Latest Patents

Kushida's latest patents include a high-strength titanium alloy and a method for preparing a surface-coated metal-made ornamental article. The ornamental article features a bilayered coating layer, which consists of an undercoating layer made from an aqueous colloidal solution of sodium silicate and silica sol, and a top-coating layer formed by coating with a solution of a partial hydrolysis-condensation product of an organic silicate ester compound, such as ethyl silicate. This innovative approach enhances the durability and aesthetic appeal of metal-made items, such as watch cases.

Career Highlights

Throughout his career, Kushida has worked with prominent companies, including Citizen Watch Company, Ltd. and Kabushiki Kaisha Kobe Seiko Sho. His expertise in materials science has allowed him to contribute to the advancement of technology in these organizations.

Collaborations

Kushida has collaborated with notable coworkers, including Kenji Irie and Tsuneji Takasugi. Their combined efforts have led to significant advancements in the field of titanium alloys and surface coatings.

Conclusion

Hachiro Kushida's innovative work in titanium alloys and surface coatings has established him as a key figure in materials science. His contributions continue to influence various industries, showcasing the importance of innovation in 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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