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For the Inventor, By the Inventor

Hyogo, Japan

Yasuyuki Hashimoto

USPTO Granted Patents = 17

Average Co-Inventor Count = 1.7

ph-index = 11

Forward Citations = 221(Granted Patents)


Location History:

  • Nishinomiya, JA (1976)
  • Hyogo, JP (1984 - 1991)
  • Hyogo-ken, JP (1999)
  • Nishinomiya, JP (1980 - 2000)

Company Filing History:

goldMedal17 out of 20 
 
Ancos Co., Ltd.
 patents

Years Active: 1976-2000

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17 patents (USPTO):Explore Patents
1. 6095706 - Writing instrument operated by a finger at a holding position (2000-08-01),
2. 5915867 - Capless writing tool (1999-06-29),
3. 5048990 - Writing instrument with drying-preventing mechanism (1991-09-17),
4. 4979839 - Mechanical pencil having an automatic lead extending mechanism (1990-12-25),
5. 4966483 - Valve operating mechanism (1990-10-30),
6. 4911569 - Mechanical pencil with a fluid actuator (1990-03-27),
7. 4629348 - Writing instrument with sealing cap and additional rearward seal (1986-12-16),
8. 4575271 - Writing instrument with movable closure and second sealing means (1986-03-11),
9. 4544295 - Mechanical pencil with self-contained insert (1985-10-01),
10. 4469462 - Writing instrument with sealing tip (1984-09-04),
11. 4382706 - Mechanical pencil (1983-05-10),
12. 4362410 - Mechanical pencil (1982-12-07),
13. 4358210 - Mechanical pencil with chuck closing by normal writing grip (1982-11-09),
14. 4270870 - Mechanical pencil with chuck closing by normal writing grip (1981-06-02),
15. 4269524 - Mechanical pencil (1981-05-26),

Title: **Yasuyuki Hashimoto: Innovator in Writing Instruments**

Introduction

Yasuyuki Hashimoto, an accomplished inventor based in Hyogo, Japan, has made significant contributions to the field of writing instruments. With an impressive portfolio of 17 patents, he continues to push the boundaries of innovation in this area.

Latest Patents

Among Hashimoto's latest inventions are two notable patents. The first is a "Writing instrument operated by a finger at a holding position," which features a hollow body designed to contain at least one refill. Each refill is automatically forced back into a retracted position and can be moved between a writing position and a resting position utilizing a cam mechanism operated by an actuating knob located near the area grasped by the user's fingertips.

The second patent, described as a "Capless writing tool," includes a body tube and a writing member that is slidably housed within it. This invention boasts a retraction and advancement mechanism that facilitates the movement of the writing member between an operational and storage position. Additionally, a sleeve in the front portion of the body hosts a sealing cover, which is hinged and ensures that the writing end of the member is sealed when retracted, thanks to elastically deformable contact.

Career Highlights

Yasuyuki Hashimoto's career has been marked by his relentless pursuit of innovation at Ancos Co., Ltd., a company recognized for its commitment to producing advanced writing tools. His contributions have played a significant role in enhancing the functionality and usability of writing instruments.

Collaborations

Throughout his career, Hashimoto has collaborated with talented professionals in his field, including notable coworkers such as Haruo Yamashita and Kazuo Shimizu. Their collaborative efforts have undoubtedly fostered creative solutions and improved product designs.

Conclusion

In conclusion, Yasuyuki Hashimoto stands out as an inventive force within the writing instrument industry. His 17 patents reflect his dedication to creating innovative solutions that meet the evolving needs of users. As he continues to develop new technologies, Hashimoto exemplifies the spirit of innovation that drives progress in design and functionality.

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