For the Inventor, By the Inventor

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London, United Kingdom

Rank Xerox Ltd.

USPTO Granted Patents = 117

Forward Citations = 1,063

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129 inventors (with patents filed for the assignee):

Hajime Miyatuka (5 out of 13 patents)

Seiji Matsumoto (5 out of 38 patents)

Hidetoshi Kito (4 out of 8 patents)

4. Koichi Takiguchi (4 out of 4 patents)

5. Yasuo Tamai (4 out of 77 patents)

6. Masamichi Sato (3 out of 81 patents)

7. Satoru Honjo (3 out of 27 patents)

8. Vernon J Smith (3 out of 3 patents)

9. Osamu Matsumoto (3 out of 3 patents)

10. Hitoshi Ohmori (3 out of 3 patents)

11. Kozo Oka (3 out of 3 patents)

12. Masaaki Harada (2 out of 7 patents)

13. Kiyoshi Horie (2 out of 28 patents)

14. Yasuji Fukase (2 out of 4 patents)

15. Yoshiharu Namba (2 out of 3 patents)

Core Competencies:

Electrophotographic

Toner Recovery

Cleaning Device

Image Development

Document Handling

Heat Fixing

Sheet Feeding

Original Positioning

Copying Machine

Electrostatographic

Printing Apparatus

Paper Feeding

117 patents: Sort by Forward Citations

1. 5982956 - Secure method for duplicating sensitive documents (1999-11-09),

2. 4826147 - Paper feed cassette (1989-05-02),

3. 4748473 - Printing apparatus with detack device (1988-05-31),

4. 4711561 - Toner recovery device (1987-12-08),

5. 4548402 - Paper sorting apparatus for a copier (1985-10-22),

6. 4499166 - Method of developing an electrostatic latent image uses magnetic (1985-02-12),

7. 4426435 - Process for forming an electrophotographic member having a protective (1984-01-17),

8. 4423950 - Cleaning device for an electrophotographic reproducing machine (1984-01-03),

9. 4394008 - Automatic and manual sheet feeding mechanism (1983-07-19),

10. 4382118 - Electrophotographic member with transport layer having inorganic n-type (1983-05-03),

11. 4352549 - Electrophotographic copying method and apparatus (1982-10-05),

12. 4348579 - Fixing roll in a copying machine (1982-09-07),

13. 4332851 - Receptor sheet for electrophotography (1982-06-01),

14. 4293630 - Electrophotographic photosensitive member (1981-10-06),

15. 4233611 - Recording head for electrostatic printing apparatus (1980-11-11),

Company Overview

Rank Xerox Ltd., headquartered in London, specializes in the development and manufacturing of advanced electrophotographic technology. The company focuses on various core technology topics, including toner recovery, cleaning devices, image development, and document handling. With a strong emphasis on innovation, Rank Xerox plays a significant role in enhancing printing and copying solutions, contributing to improved efficiency and quality in document management. Its expertise extends to heat fixing and sheet feeding, ensuring reliable performance in diverse applications.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

117 Patents

#43 in London

#148 in United Kingdom

#6,794 in the World

London, United Kingdom

Rank Xerox Ltd.

Forward Citations = 1,063

129 inventors:

Hajime Miyatuka (5 out of 13 patents)

Seiji Matsumoto (5 out of 38 patents)

Hidetoshi Kito (4 out of 8 patents)

4. Koichi Takiguchi (4 out of 4 patents)

5. Yasuo Tamai (4 out of 77 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Rank Xerox Ltd.. Retrieved from https://idiyas.com/company/rank-xerox

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

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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