Yokohama, Japan

Takeo Fukumoto

This inventor holds 18 USPTO granted patents and 10 EPO patents, primarily in Writing Instruments. Top assignee: Mitsubishi Pencil Company, Limited. Active years: 2005-2024.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takeo Fukumoto. Retrieved from https://idiyas.com/inventor/takeo-fukumoto

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


% Patents Active = 61.1

 

Average Co-Inventor Count = 2.4

ph-index = 4

Forward Citations = 48(Granted Patents)


Location History:

  • Fujioka, JP (2014 - 2015)
  • Yokohama, JP (2005 - 2022)
  • Shinagawa-ku, JP (2024)

Company Filing History:


Years Active: 2005-2024

Loading Chart...
Loading Chart...
Areas of Expertise:
Writing Tool
Ballpoint Pen
Mechanical Pencil
Refill Design
Liquid Material Container
Lead Propelling Device
Composite Member
Moulding Method
Lead Holding Structure
Clicking Type Container
18 patents (USPTO):Explore Patents

Title: The Innovative Genius of Takeo Fukumoto

Introduction: Takeo Fukumoto, an acclaimed inventor based in Yokohama, Japan, has made significant contributions to the field of writing instruments. With a total of 18 patents to his name, Fukumoto has showcased his inventive prowess, particularly in designing tools that enhance user experience and functionality.

Latest Patents: Among his most recent innovations are two notable patents. The first is a writing tool that features a clip constructed from a wire rod, allowing users to easily elevate the clip without the need for both hands. This design incorporates a tool body that extends longitudinally, with a clip member that is biased towards the tool body when not in use. When the user pushes the back-end portion of the clip member, the fore-end swings away from the tool body, promoting enhanced usability.

The second patent is for a versatile writing implement that allows users to adjust the width of the drawn line through varying writing pressure. This device includes a shaft tube housing an ink supply core, guiding ink via capillary action. The innovative design enables the ink supply core to retract based on the applied pressure, thus offering flexibility in writing styles and preferences.

Career Highlights: Takeo Fukumoto is an esteemed member of Mitsubishi Pencil Company, Limited, where he continues to push the boundaries of writing technology. His works reflect a commitment to improving everyday writing tools, making them more functional and user-friendly.

Collaborations: Throughout his career, Fukumoto has collaborated with fellow inventors such as Kyo Nakayama and Kazuhiko Furukawa. These partnerships have further enriched his innovative projects, leading to the development of advanced writing instruments that resonate with consumers and professionals alike.

Conclusion: Takeo Fukumoto's contributions to the field of writing instruments highlight his inventive spirit and dedication to enhancing user experience through innovative solutions. His work at Mitsubishi Pencil Company, Limited, along with his collaborations, continues to inspire future advancements in the world of writing tools.

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…