Toshio Fukagai

This inventor holds 21 USPTO granted patents, primarily in Electrophotographic Technology. Top assignee: Ricoh Company, Ltd.. Active years: 1981-2004.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshio Fukagai. Retrieved from https://idiyas.com/inventor/toshio-fukagai

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

USPTO Granted Patents = 21

% Patents Active = 100.0

Average Co-Inventor Count = 3.2

ph-index = 11

Forward Citations = 262(Granted Patents)

Location History:

Shizuoka, JP (1981 - 2003)
Numazu, JP (1983 - 2004)

Company Filing History:

21 out of 28,951

Ricoh Company, Ltd.

patents

Years Active: 1981-2004

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Areas of Expertise:

Image Forming Method

Photoconductor

Electrophotographic Apparatus

Acrylic Acid Ester

Charge Transport

Layered Photoconductor

Process Cartridge

Charge Generating Layer

Photoreceptor Evaluation

Intermediate Layer

Overcoat Layer

Undercoat Layer

21 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6830857 - Image forming method, image forming apparatus, process cartridge and photoconductor (2004-12-14),

2. 6821694 - Image forming method, image forming apparatus, process cartridge and photoconductor (2004-11-23),

3. 6649313 - Photoreceptor, method of evaluating a photoreceptor, and method of producing the photoreceptor (2003-11-18),

4. 6534227 - Photoreceptor, method of evaluating the photoreceptor, method of producing the photoreceptor, and image formation apparatus using the photoreceptor (2003-03-18),

5. 6521388 - Electrophotographic image forming apparatus, and photoreceptor therefor (2003-02-18),

6. 5670284 - Electrophotographic photoconductor (1997-09-23),

7. 5608010 - Polymers of acrylic acid ester derivatives having a triphenyl amine (1997-03-04),

8. 5488137 - Acrylic acid ester derivative having a triphenyl amine skeleton (1996-01-30),

9. 5427880 - Electrophotographic Photoconductor (1995-06-27),

10. 5339138 - Electrophotographic image formation method (1994-08-16),

11. 5322753 - Electrophotographic photoconductor and acrylic acid ester polymer for (1994-06-21),

12. 5135829 - Electrophotographic photoconductor having intermediate layer comprising (1992-08-04),

13. 4970131 - Electrophotographic photoconductor having overcoat layer (1990-11-13),

14. 4946766 - Electrophotographic photoconductor having intermediate layer comprising (1990-08-07),

15. 4906545 - Electrophotographic photoconductor with undercoat layer containing metal (1990-03-06),

Title: Toshio Fukagai: Innovator in Image Formation Technology

Introduction: Toshio Fukagai, based in Numazu, Japan, is a prominent inventor recognized for his contributions to image forming technology. With a remarkable portfolio of 21 patents, Fukagai has made significant advancements that enhance the efficiency and quality of image formation processes.

Latest Patents: Among Fukagai's latest innovations are patents related to an image forming method, image forming apparatus, process cartridge, and photoconductor. One of his notable inventions involves a method that consists of charging the upper surface of a photoconductor with a charger positioned either in contact or closely spaced from the surface. This method uses a light beam to scan the charged photoconductor, forming an electrostatic latent image. The unique roughness parameters of the photoconductor are meticulously defined to achieve optimal performance, making these patents critical in advancing imaging technologies.

Career Highlights: Throughout his career at Ricoh Company, Ltd., Toshio Fukagai has dedicated his efforts to the development of innovative imaging solutions. His work not only focuses on the technical aspects of image formation but also strives to improve the overall functionality and reliability of imaging systems used in various applications today.

Collaborations: Toshio Fukagai has collaborated with esteemed colleagues, including Kiyoshi Taniguchi and Toshiyuki Kabata. Their joint efforts have played a significant role in the successful development of various patented technologies, showcasing the power of teamwork in the field of innovation.

Conclusion: Toshio Fukagai's contributions to the field of image formation exemplify the impact of creativity and technical expertise in driving innovation. With 21 patents to his name, his work continues to influence not just the imaging industry but also the broader realm of technology advancements. As he collaborates with talented peers at Ricoh Company, Ltd., the potential for future innovations remains promising.

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]