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Pfu Limited

Calculating rank

USPTO Granted Patents = 714

% Expired Patents = 18.8

CIPO Patents = 5

EPO Patents = 8

Trademarks = 1

Forward Citations = 5,133

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480 inventors (with patents filed for the assignee):

Satoshi Kuroda (57 out of 57 patents)

Minoru Sugitani (46 out of 46 patents)

Hiroyuki Kuroda (38 out of 38 patents)

4. Takayuki Umi (33 out of 33 patents)

5. Kiyoto Kosaka (31 out of 31 patents)

6. Masanobu Hongo (31 out of 31 patents)

7. Kiichiro Shimosaka (29 out of 30 patents)

8. Masanari Takabatake (28 out of 28 patents)

9. Toshiki Satoji (28 out of 29 patents)

10. Kiichi Taniho (26 out of 26 patents)

11. Shuichi Morikawa (25 out of 26 patents)

12. Shigeharu Okano (24 out of 24 patents)

13. Shuji Hashimoto (23 out of 23 patents)

14. Ryoichi Yasukawa (22 out of 22 patents)

15. Minoru Masuda (19 out of 76 patents)

Core Competencies:

Medium Conveyance

Image Generation

Multi-Feed Detection

Skew Correction

Control System

Sound Wave Sensors

Ejection Tray

Document Feeder

Input Device

Data Management

Medium Detection

Torque Control

714 patents: Sort by Forward Citations

1. 12790152 - Media ejecting apparatus, media ejecting method, and non-transitory recording medium (2026-11-10),

2. 12786336 - File providing method and system with image input apparatus receiving permission operation for enabling data transmission (2026-11-03),

3. 12774181 - Media conveying apparatus, media feeding method, and non-transitory recording medium (2026-10-27),

4. 12759827 - Medium conveying apparatus to correct skew of medium using second roller while moving first roller to be spaced apart from medium (2026-10-13),

5. 12747122 - Media conveying apparatus (2026-09-29),

6. 12743015 - Image capturing device and panoramic image creation method (2026-09-22),

7. 12719997 - Image reading apparatus, information processing method, and non-transitory recording medium for editing page data of a multi-page document in external storage (2026-08-25),

8. 12712976 - MEDIA CONVEYING APPARATUS, IMAGE PROCESSING SYSTEM, AND MEDIA CONVEYING METHOD (2026-08-18),

9. 12709512 - MEDIA EJECTING APPARATUS, CONTROL METHOD, AND NON-TRANSITORY COMPUTER-EXECUTABLE MEDIUM (2026-08-18),

10. 12709503 - MEDIUM CONVEYANCE DEVICE (2026-08-18),

11. 12709502 - MEDIA FEEDING APPARATUS (2026-08-18),

12. 12698172 - Medium conveying apparatus, medium conveying method, and computer-readable non-transitory medium (2026-08-04),

13. 12692107 - Medium conveying apparatus (2026-07-28),

14. 12691471 - Object imaging apparatus and object recognition apparatus (2026-07-28),

15. 12689694 - Information processing device to display sample image and comparative sample image of mode specified by a user side by side (2026-07-21),

Company Overview

Pfu Limited, based in Kahoku, Japan, specializes in media conveyance technology, focusing on the development and manufacturing of advanced document handling solutions. The company is known for its innovations in medium conveyance systems, image generation, and multi-feed detection, which enhance the efficiency and accuracy of document processing. Pfu Limited also integrates sophisticated control systems and sound wave sensors into its products, ensuring reliable performance in various applications, including document feeders and ejection trays.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Nov 10 2026

714 Patents

#1 in Kahoku

#288 in Japan

#1,400 in the World

Pfu Limited

Forward Citations = 5,133

480 inventors:

Satoshi Kuroda (57 out of 57 patents)

Minoru Sugitani (46 out of 46 patents)

Hiroyuki Kuroda (38 out of 38 patents)

4. Takayuki Umi (33 out of 33 patents)

5. Kiyoto Kosaka (31 out of 31 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Pfu Limited. Retrieved from https://idiyas.com/company/pfu

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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