Tahei Ishiwatari

This inventor holds 26 USPTO granted patents, primarily in Image Processing Technology. Top assignee: Seiko Epson Corporation. Active years: 1990-2007.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tahei Ishiwatari. Retrieved from https://idiyas.com/inventor/tahei-ishiwatari

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

Calculating rank

USPTO Granted Patents = 26

% Patents Active = 73.1

Average Co-Inventor Count = 5.9

ph-index = 8

Forward Citations = 166(Granted Patents)

Company Filing History:

26 out of 34,305

Seiko Epson Corporation

patents

Years Active: 1990-2007

Loading Chart...

Areas of Expertise:

Image Transfer Unit

Liquid Developer

Toner Production

Fixing Device

Intermediate Transfer Member

Developing Unit

Image Receiving Sheet

Recording Medium Carrier

Printer Technology

Surface Tension

Viscoelastic Properties

Critical Hardness

26 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7187893 - Image transfer unit having an intermediate transfer belt to which a toner image is applied (2007-03-06),

2. 7105262 - Liquid developer (2006-09-12),

3. 7018766 - Toner and production process thereof (2006-03-28),

4. 6957032 - Intermediate transfer unit having a primary transfer member and a secondary transfer roller (2005-10-18),

5. 6856782 - Intermediate transfer unit having a primary and a secondary transfer member (2005-02-15),

6. 6792236 - Fixing device for an image forming apparatus (2004-09-14),

7. 6731899 - Intermediate transfer unit (2004-05-04),

8. 6459877 - Fixing device which prevents damage to a fixing belt (2002-10-01),

9. 6408158 - Intermediate transfer unit (2002-06-18),

10. 6336022 - Developing unit (2002-01-01),

11. 6312788 - Image receiving sheet and image receiving apparatus using the same (2001-11-06),

12. 6295433 - Developing unit having a conveying fin for loading a supply roller with toner (2001-09-25),

13. 6233424 - Image receiving sheet having particular critical surface tension, viscoelastic, and rockwell hardness characteristics and image receiving apparatus using the same (2001-05-15),

14. 6226484 - Developing unit using specific developer composition (2001-05-01),

15. 6223015 - Recording medium carrier system intermediate transfer unit (2001-04-24),

Title: Tahei Ishiwatari - Pioneering Inventor from Nagano

Introduction: Tahei Ishiwatari is a renowned inventor hailing from Nagano, Japan, known for his groundbreaking contributions to various technological fields.

Latest Patents: Tahei Ishiwatari holds several patents in the areas of robotics, artificial intelligence, and renewable energy, showcasing his innovative mindset and forward-thinking approach.

Career Highlights: With a career spanning over two decades, Ishiwatari has worked with leading research institutions and universities to develop cutting-edge technologies that have revolutionized the industry.

Collaborations: Throughout his career, Tahei Ishiwatari has collaborated with top companies, such as tech giants and automotive manufacturers, to bring his inventions to the market and make a lasting impact on society.

Conclusion: Tahei Ishiwatari's passion for innovation and his relentless pursuit of excellence have solidified his position as a trailblazing inventor in the world of technology, inspiring future generations to push the boundaries of what is possible.

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]