logo

For the Inventor, By the Inventor

Osaka, Japan

Masahiro Yasunaga

This inventor holds 14 USPTO granted patents and 1 EPO patent. Top assignees: Sakura Color Products Corporation, Kabushiki Kaisha Sakura Kurepasu. Active years: 1992-2014.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masahiro Yasunaga. Retrieved from https://idiyas.com/inventor/masahiro-yasunaga

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

USPTO Granted Patents = 14

% Patents Active = 85.7


Average Co-Inventor Count = 1.6

ph-index = 6

Forward Citations = 135(Granted Patents)


Company Filing History:

goldMedal12 out of 177 
 
Sakura Color Products Corporation
 patents
silverMedal2 out of 13 
 
Kabushiki Kaisha Sakura Kurepasu
 patents

Years Active: 1992-2014

Loading Chart...
Loading Chart...
14 patents (USPTO):Explore Patents
1. D706348 - Ballpoint pen (2014-06-03),
2. D691655 - Ballpoint pen (2013-10-15),
3. D681731 - Cap for a writing instrument (2013-05-07),
4. D667500 - Writing instrument (2012-09-18),
5. D600748 - Painting equipment case (2009-09-22),
6. D559320 - Cap for an instrument for dispensing a composition (2008-01-08),
7. D543587 - Cap for an instrument for dispensing a writing composition (2007-05-29),
8. 6852281 - Gas indicator and gas sensor sheet (2005-02-08),
9. 6783295 - Applicator (2004-08-31),
10. 6494634 - Penpoint tip and an applicator having the tip incorporated therein (2002-12-17),
11. 5938361 - Writing utensil and method of manufacturing the writing utensil (1999-08-17),
12. 5709492 - Liquid applicator (1998-01-20),
13. 5348411 - Writing implement and a fabricating method thereof (1994-09-20),
14. 5114258 - Cap with air passage (1992-05-19),

Title: Discovering Masahiro Yasunaga: A Pioneer in Ballpoint Pen Innovations

Introduction

Masahiro Yasunaga is an accomplished inventor based in Osaka, Japan, known for his significant contributions to the field of writing instruments. With a remarkable portfolio of 14 patents, his innovative spirit has notably influenced the development of the ballpoint pen.

Latest Patents

Among his most recent patents is the advanced ballpoint pen, which showcases Yasunaga's dedication to enhancing user experience and functionality in everyday writing tools. His work reflects a commitment to not only design but also improve the practical applications of writing instruments.

Career Highlights

Yasunaga has had a successful career with notable positions in companies such as Sakura Color Products Corporation and Kabushiki Kaisha Sakura Kurepasu. His tenure at these institutions has allowed him to refine his skills and push the boundaries of product innovation in the stationery industry.

Collaborations

Throughout his career, Yasunaga has collaborated with talented individuals like Shigeyasu Inoue and Yuki Inoue. These collaborations have played a pivotal role in driving innovation and expanding the horizons of product development in the competitive market of writing instruments.

Conclusion

Masahiro Yasunaga stands out as a visionary inventor whose contributions to the ballpoint pen have significantly impacted the way we write. His extensive experience and collaborative efforts continue to inspire future advancements in the field of stationery innovation.

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]
Loading…