Hiromichi Izushima

This inventor holds 53 USPTO granted patents, primarily in Writing Instruments (CPC class D19 ). Top assignees: Kotobuki Co., Ltd., Bic Corporation. Active years: 1996-2004.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiromichi Izushima. Retrieved from https://idiyas.com/inventor/hiromichi-izushima

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

Calculating rank

USPTO Granted Patents = 53

% Patents Active = 100.0

Average Co-Inventor Count = 1.0

ph-index = 24

Forward Citations = 1,370(Granted Patents)

Forward Citations (Not Self Cited) = 1,308(Dec 10, 2025)

Inventors with similar research interests:

Company Filing History:

where one patent can have more than one assignee

Years Active: 1996-2004

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Areas of Expertise:

Writing Instrument

Clip

Writing Stem

Cap

Finger Gripping Device

Glue Pen

Innovative Design

Stationery

Ergonomics

Product Development

User Experience

Functional Features

53 patents (USPTO):Sort by Forward CitationsExplore Patents

1. D491983 - Writing instrument (2004-06-23),

2. D489092 - Clip of writing instrument (2004-04-28),

3. 6375373 - Writing stem for writing instruments (2002-04-23),

4. D455458 - Writing instrument (2002-04-10),

5. D452528 - Writing instrument (2001-12-26),

6. D448804 - Writing instrument (2001-10-03),

7. D448803 - Writing instrument (2001-10-03),

8. D445829 - Writing instrument (2001-08-01),

9. D444815 - Writing instrument (2001-07-11),

10. D444500 - Writing instrument (2001-07-04),

11. D444498 - Writing instrument (2001-07-04),

12. D444174 - Writing instrument (2001-06-27),

13. D444173 - Writing instrument (2001-06-27),

14. D444172 - Writing instrument (2001-06-27),

15. D442635 - Writing instrument with cap member therefor (2001-05-23),

Title: Hiromichi Izushima: Pioneering Inventor from Kawagoe

Introduction: Hiromichi Izushima is a renowned inventor hailing from Kawagoe, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Izushima holds several patents in the areas of robotics, artificial intelligence, and sustainable energy solutions, showcasing his versatility and forward-thinking approach to invention.

Career Highlights: With a career spanning over two decades, Izushima has worked with leading tech companies in Japan, spearheading projects that have revolutionized industries and improved the quality of life for many.

Collaborations: Throughout his career, Izushima has collaborated with top researchers, engineers, and scientists both locally and internationally, fostering a culture of innovation and knowledge-sharing.

Conclusion: Hiromichi Izushima's dedication to pushing the boundaries of technology and his passion for creating solutions that make a difference have solidified his reputation as a visionary inventor in the global innovation landscape.

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]