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For the Inventor, By the Inventor

Yokohama, Japan

Kouji Ishigaki

This inventor holds 16 USPTO granted patents and 1 published patent application and 1 EPO patent. Top assignee: Ricoh Company, Ltd.. Active years: 1990-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kouji Ishigaki. Retrieved from https://idiyas.com/inventor/kouji-ishigaki

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

USPTO Granted Patents = 16 

% Patents Active = 100.0

 

Average Co-Inventor Count = 3.9

ph-index = 9

Forward Citations = 333(Granted Patents)


Location History:

  • Kanagawa, JP (2000)
  • Yokohama, JP (1990 - 2001)

Company Filing History:

goldMedal16 out of 28,934 
 
Ricoh Company, Ltd.
 patents

Years Active: 1990-2001

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16 patents (USPTO):Explore Patents
1. 6272248 - Original-discrimination system for discriminating special document, and image forming apparatus, image processing apparatus and duplicator using the original-discrimination system (2001-08-07),
2. 6160969 - Image forming apparatus with a voltage applying unit for image transfer (2000-12-12),
3. 5751854 - Original-discrimination system for discriminating special document, and (1998-05-12),
4. 5659628 - Special-document discriminating apparatus and managing system for image (1997-08-19),
5. 5652803 - Special-document discriminating apparatus and managing system for image (1997-07-29),
6. 5341196 - Image forming equipment using a toner cartridge (1994-08-23),
7. 5321466 - Image forming equipment with reserve mode to prevent unauthorized (1994-06-14),
8. 5265855 - Copier with document support moving means (1993-11-30),
9. 5258248 - Image density control method for an image forming apparatus (1993-11-02),
10. 5245390 - Device for adjusting output of image density sensor incorporated in (1993-09-14),
11. 5184184 - Image forming apparatus (1993-02-02),
12. 5122837 - Toner cartridge for an image forming apparatus (1992-06-16),
13. 5057867 - Image forming apparatus which corrects the image forming factors in (1991-10-15),
14. 5045883 - Image density control method using exclusive patterns for an image (1991-09-03),
15. 5028960 - Image density control method for an image forming apparatus (1991-07-02),

Title: Kouji Ishigaki: Pioneering Inventor from Yokohama

Introduction: Kouji Ishigaki is a renowned inventor hailing from Yokohama, Japan, known for his groundbreaking contributions to various technological fields.

Latest Patents: Kouji Ishigaki's latest patents include innovative designs in the field of robotics, artificial intelligence, and sustainable energy solutions.

Career Highlights: With a career spanning over two decades, Ishigaki has worked with leading tech companies in Japan, spearheading research and development projects that have resulted in numerous successful patents.

Collaborations: Throughout his career, Kouji Ishigaki has collaborated with top researchers, engineers, and scientists both locally and internationally, fostering a culture of innovation and excellence.

Conclusion: Kouji Ishigaki's passion for pushing the boundaries of technology and his relentless pursuit of innovation continue to inspire the next generation of inventors and researchers worldwide.

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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