Takahiko Tokumasu

This inventor holds 19 USPTO granted patents, primarily in Image Formation Technology. Top assignees: Ricoh Company, Ltd., Other. Active years: 1986-2009.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takahiko Tokumasu. Retrieved from https://idiyas.com/inventor/takahiko-tokumasu

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

USPTO Granted Patents = 19

% Patents Active = 78.9

Average Co-Inventor Count = 4.5

ph-index = 12

Forward Citations = 376(Granted Patents)

Location History:

Kanagawa, JP (2002)
Atsugi, JP (1986 - 2009)
Tokyo, JP (1999 - 2009)

Company Filing History:

18 out of 28,951

Ricoh Company, Ltd.

patents

1 out of 834,570

Other

patents

Years Active: 1986-2009

Loading Chart...

Areas of Expertise:

Image Forming Apparatus

Process Cartridge

Charging Device

Lubricant Applying Unit

Cleaning Device

Thermal Recording

Transfer-Type Thermal Printer

Image Formation Method

Toner Cleaning Mode

Proximity Charging System

Protective Material

Drive Signal Pulse Widths

19 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7593682 - Image forming apparatus, image forming method, and process cartridge (2009-09-22),

2. 7505728 - Lubricant applying unit, process cartridge, image forming apparatus, and image forming method (2009-03-17),

3. 7496324 - Lubricant applying unit and image forming apparatus (2009-02-24),

4. 7383013 - Image forming apparatus using a contact or a proximity type of charging system including a protection substance on a moveable body to be charged (2008-06-03),

5. 7295788 - Image forming apparatus and process cartridge (2007-11-13),

6. 7251438 - Image forming apparatus using a contact or a proximity type of charging system including a protection substance on a moveable body to be charged (2007-07-31),

7. 7251437 - Image formation apparatus having a body to be charged with specified properties and including the use of a protective material (2007-07-31),

8. 7209699 - Lubricant applying unit, process cartridge, image forming apparatus, and image forming method (2007-04-24),

9. 7113726 - Charging device, image forming process cartridge, and image forming apparatus including the charging device (2006-09-26),

10. 7103301 - Image forming apparatus using a contact or a proximity type of charging system including a protection substance on a moveable body to be charged (2006-09-05),

11. 7058335 - Process cartridge and image forming apparatus with toner fed cleaning mode (2006-06-06),

12. 6987944 - Cleaning device and image forming apparatus using the cleaning device (2006-01-17),

13. 6721523 - Charging device, image forming unit and image forming device (2004-04-13),

14. 6398345 - Image forming method and an apparatus for the same, and a cleaning device (2002-06-04),

15. 6366751 - Image forming apparatus including preselected range between charge injection layer and voltage potential (2002-04-02),

Title: Takahiko Tokumasu: Pioneering Inventor from Tokyo

Introduction: Takahiko Tokumasu is a renowned inventor hailing from Tokyo, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Takahiko Tokumasu holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his versatility and forward-thinking approach to invention.

Career Highlights: Throughout his illustrious career, Takahiko Tokumasu has worked with leading tech companies in Japan, spearheading projects that have revolutionized industries and improved the quality of life for many.

Collaborations: Tokumasu has collaborated with top researchers and engineers from around the world, fostering a culture of innovation and knowledge-sharing that has led to numerous successful inventions and patents.

Conclusion: Takahiko Tokumasu's dedication to pushing the boundaries of technology and his passion for creating solutions to complex problems make him a true visionary in the world of invention.

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]