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For the Inventor, By the Inventor

Tokyo, Japan

Kazuhisa Shimizu

This inventor holds 36 USPTO granted patents, primarily in Writing Instruments. Top assignee: Pentel Kabushiki Kaisha. Active years: 1994-2017.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazuhisa Shimizu. Retrieved from https://idiyas.com/inventor/kazuhisa-shimizu

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

Calculating rank
USPTO Granted Patents = 36

% Patents Active = 100.0

Average Co-Inventor Count = 1.0

ph-index = 16

Forward Citations = 560(Granted Patents)


Location History:

  • Kami Ikedai, JP (2000)
  • Chuo-ku, JP (2003)
  • Shinagawa-ku, JP (2009)
  • Tokyo, JP (1994 - 2017)

Company Filing History:

goldMedal36 out of 264 
 
Pentel Kabushiki Kaisha
 patents

Years Active: 1994-2017

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Areas of Expertise:
Mechanical Pencil
Ballpoint Pen
Correction Tape
Electronic Pen
Writing Instrument
Cap
Grip
Transcriber
Holder
Marking Tape
Board
Cap for Writing Instrument
36 patents (USPTO):Explore Patents
1. D777256 - Mechanical pencil (2017-01-24),
2. D698390 - Mechanical pencil (2014-01-28),
3. D665024 - Mechanical pencil (2012-08-07),
4. D648799 - Correction tape transcriber (2011-11-15),
5. D648798 - Correction pen (2011-11-15),
6. D630247 - Mechanical pencil (2011-01-04),
7. D611535 - Mechanical pencil (2010-03-09),
8. D597600 - Ballpoint pen (2009-08-04),
9. D587752 - Ballpoint pen (2009-03-03),
10. D584356 - Cap for electronic pen (2009-01-06),
11. D580979 - Cap for a writing instrument (2008-11-18),
12. D576676 - Ballpoint pen (2008-09-09),
13. D575338 - Ballpoint pen (2008-08-19),
14. D569437 - Cap for writing instrument (2008-05-20),
15. D549779 - Grip for a writing instrument (2007-08-28),

Title: Kazuhisa Shimizu: Innovator in Mechanical Pencil Design

Introduction

Kazuhisa Shimizu is a renowned inventor based in Tokyo, Japan, recognized for his significant contributions to the field of mechanical pencil design. With a total of 36 patents to his name, Shimizu has played a pivotal role in advancing writing instruments and enhancing user experience.

Latest Patents

Among his latest innovations is a sophisticated mechanical pencil that combines functionality with ergonomic design. His work showcases the intricate balance between aesthetics and usability, making it a noteworthy addition to the world of writing tools.

Career Highlights

Shimizu's career at Pentel Kabushiki Kaisha, a leading manufacturer of stationery products, has been marked by his innovative spirit and dedication to improving writing instruments. His expertise has helped solidify the company's position as a pioneer in the stationery market.

Collaborations

Throughout his career, Kazuhisa Shimizu has collaborated with talented individuals, including coworkers Kazuyuki Imaizumi and Kenji Kita. These partnerships have fostered a creative environment that encourages innovation and has led to the development of several patented products.

Conclusion

Kazuhisa Shimizu's contributions to the field of mechanical pencil design exemplify the impact that dedicated inventors can have on everyday products. His extensive patent portfolio and collaborative efforts reflect a commitment to innovation that continues to inspire future generations of inventors.

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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