Shuji Ichikawa

This inventor holds 16 USPTO granted patents and 2 published patent applications, plus 3 CIPO patents and 7 EPO patents, primarily in Ink Composition Technology. Top assignees: Mitsubishi Pencil Company, Limited, Mitsubishi Pencil Kabushiki Kaisha, Terumo Corporation. Active years: 1987-2023.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shuji Ichikawa. Retrieved from https://idiyas.com/inventor/shuji-ichikawa

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

Calculating rank

USPTO Granted Patents = 16 (Patent Applications = 2)

% Patents Active = 93.8

CIPO Patents = 3 (Patent Applications = 1)

EPO Patents = 7

Average Co-Inventor Count = 1.4

ph-index = 5

Forward Citations = 98(Granted Patents)

Location History:

Shinagawa-ku, JP (2004)
Yokohama, JP (1999 - 2017)
Tokyo, JP (1987 - 2023)

Company Filing History:

11 out of 396

Mitsubishi Pencil Company, Limited

patents

4 out of 196

Mitsubishi Pencil Kabushiki Kaisha

Years Active: 1987-2023

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Areas of Expertise:

Ink Composition

Oil-Based Inks

Writing Instruments

Colorant

Microcapsule Pigment

Ink Reservoir

Ballpoint Pen

Non-Aqueous Ink

Oily Ballpoint Pens

Amide Derivatives

5-Lipoxygenase Inhibitors

16 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 11780258 - Liquid storage member for coating tools (2023-10-10),

2. 11679618 - Ink reservoir unit for writing instruments and writing instruments (2023-06-20),

3. 9790384 - Ink composition for writing instrument and coloring material (2017-10-17),

4. 9315672 - Colorant, microcapsule pigment prepared by using the same and ink composition for writing instrument (2016-04-19),

5. 7794533 - Oil-based ink composition for writing utensil and writing utensil employing the same (2010-09-14),

6. 7521491 - Oil-based ink composition for ballpoint pen and ball-point pen using oil-based ink (2009-04-21),

7. 7462229 - Oil-based ink composition for ballpoint pen using oil-based ink (2008-12-09),

8. 7311459 - Follower for non-aqueous ball point pen and non-aqueous ball point pen (2007-12-25),

9. 7172648 - Oil-base ballpoint ink composition and oily ballpoint pens (2007-02-06),

10. 7071245 - Oil-based ballpoint pen ink composition and oil-based ballpoint pen (2006-07-04),

11. 7056052 - Ink reservoir for writing instrument (2006-06-06),

12. 6786956 - Ballpoint pen oil-based ink composition and ballpoint pens (2004-09-07),

13. 6051629 - Ink composition (2000-04-18),

14. 6048914 - Ink composition for writing instrument (2000-04-11),

15. 5980624 - Oil base ink composition (1999-11-09),

Title: Shuji Ichikawa: Pioneering Inventor from Yokohama

Introduction: Shuji Ichikawa is a renowned inventor hailing from Yokohama, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Shuji Ichikawa's latest patents include advancements in artificial intelligence algorithms for autonomous vehicles, wearable technology for healthcare monitoring, and sustainable energy solutions.

Career Highlights: Throughout his illustrious career, Shuji Ichikawa has received numerous accolades for his innovative work, including the prestigious Inventor of the Year award in Japan and multiple patents for his cutting-edge inventions.

Collaborations: Shuji Ichikawa has collaborated with leading tech companies, research institutions, and universities worldwide to further develop and implement his inventions, fostering a culture of innovation and progress in the industry.

Conclusion: Shuji Ichikawa's relentless pursuit of innovation and his passion for creating technology that improves lives have solidified his reputation as a trailblazing inventor in Yokohama and beyond.

Profile summary based on public USPTO records.