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For the Inventor, By the Inventor

Nagano, Japan

Takehiko Okamura

This inventor holds 25 USPTO granted patents, primarily in Image Forming Technology. Top assignee: Seiko Epson Corporation. Active years: 1992-2010.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takehiko Okamura. Retrieved from https://idiyas.com/inventor/takehiko-okamura

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

Calculating rank
USPTO Granted Patents = 25

% Patents Active = 48.0

Average Co-Inventor Count = 2.7

ph-index = 6

Forward Citations = 136(Granted Patents)


Location History:

  • Suwa, JP (1992 - 2004)
  • Nagano, JP (1995 - 2007)
  • Nagano-Ken, JP (2003 - 2009)
  • Matsumato, JP (2010)
  • Matsumoto, JP (2010)

Company Filing History:

goldMedal25 out of 34,305 
 
Seiko Epson Corporation
 patents

Years Active: 1992-2010

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Areas of Expertise:
Image Forming Apparatus
Toner Cartridge
Developing Device
Intermediate Transfer Unit
Toner Counter
Image Transfer Unit
Recording Medium Carrier
Flexible Magnetic Field
Calculation Method
Life Management
Paper Feed Unit
Transfer Roller
25 patents (USPTO):Explore Patents
1. 7809287 - Consumable cartridge and image forming apparatus using the same (2010-10-05),
2. 7773889 - Image forming apparatus and method of setting the same (2010-08-10),
3. 7509064 - Image forming apparatus, a toner counter and a calculation method of toner consumption (2009-03-24),
4. 7489882 - Image forming apparatus, a toner counter and a calculation method of toner consumption (2009-02-10),
5. 7289743 - Image forming apparatus, a toner counter and a calculation method of toner consumption (2007-10-30),
6. 7187893 - Image transfer unit having an intermediate transfer belt to which a toner image is applied (2007-03-06),
7. 7158744 - Developing device, image forming apparatus, and image forming system (2007-01-02),
8. 7113711 - Device and method of managing life of toner cartridge, and image forming apparatus using the same (2006-09-26),
9. 6999707 - Method of forming image and image forming apparatus (2006-02-14),
10. 6957032 - Intermediate transfer unit having a primary transfer member and a secondary transfer roller (2005-10-18),
11. 6941100 - Developer bearing member, method for producing developer bearing member, developing device, image-forming apparatus, and computer system (2005-09-06),
12. 6856782 - Intermediate transfer unit having a primary and a secondary transfer member (2005-02-15),
13. D500075 - Toner cartridge (2004-12-22),
14. 6731899 - Intermediate transfer unit (2004-05-04),
15. 6526238 - Developing device (2003-02-25),

Title: Innovations of Takehiko Okamura in Image Forming Technology

Introduction

Takehiko Okamura is a prominent inventor based in Nagano-ken, Japan, known for his contributions to image forming technology. With an impressive portfolio of 25 patents, Okamura has made significant advancements that enhance the efficiency and reliability of imaging systems.

Latest Patents

Among his latest patents are two noteworthy inventions: the "Consumable cartridge and image forming apparatus using the same" and the "Image forming apparatus and method of setting the same." The first patent enables users to easily determine whether a consumable cartridge is refilled or original, featuring an ID tag memory seal that visually indicates the manufacturer's authenticity. The second patent introduces an innovative method for setting imaging apparatuses to regulate the use of low-cost consumable cartridges, allowing for normal operation with both standard and budget cartridges depending on the stored settings.

Career Highlights

Okamura plays a vital role at Seiko Epson Corporation, where he continues to innovate in the field of image forming technologies. His inventions focus on improving user experience and operational efficiency, contributing significantly to the company's reputation as a leader in imaging solutions.

Collaborations

Throughout his career, Takehiko Okamura has collaborated with esteemed coworkers such as Toshiya Takahata and Toshihiko Yamazaki. Together, they have worked on various projects aimed at enhancing the functionality and performance of imaging technologies in the market.

Conclusion

Takehiko Okamura's work and innovations reflect a commitment to advancing image forming technology. His patents not only demonstrate his expertise but also provide valuable solutions for users, highlighting the importance of continuous innovation in the industry.

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]
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