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For the Inventor, By the Inventor

Saitama, Japan

Fujinon Corporation

Calculating rank
USPTO Granted Patents = 695

% Expired Patents = 67.2


Trademarks = 9

Forward Citations = 7,355

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338 inventors (with patents filed for the assignee):

goldMedal Kenichi Sato (34 out of 58 patents)

silverMedal Kazunori Abe (34 out of 49 patents)

bronzeMedal Tetsuya Ori (25 out of 61 patents)

4.  Yoshihiro Ito (22 out of 54 patents)

5.  Yu Kitahara (21 out of 27 patents)

6.  Mitsuo Manabe (20 out of 43 patents)

7.  Toshiaki Katsuma (19 out of 40 patents)

8.  Chikara Yamamoto (18 out of 100 patents)

9.  Ryota Sasaki (18 out of 24 patents)

10.  Takehiko Senba (17 out of 59 patents)

11.  Masao Mori (16 out of 40 patents)

12.  Minoru Taniyama (16 out of 18 patents)

13.  Daisuke Ayame (16 out of 22 patents)

14.  Taro Asami (15 out of 60 patents)

15.  Yoshikazu Shinohara (15 out of 39 patents)


Core Competencies:
Endoscope
Imaging System
Autofocus
Flexible Tube
Electronic Apparatus
Optical Pickup
Projection Lens
High-Frequency Tool
Imaging Lens
Controller
Suctioning Means
Light Source

695 patents:

1. 8734695 - Endoscope flexible tube and its manufacturing method (2014-05-27),
2. 8721526 - Insertion assisting device and endoscope apparatus (2014-05-13),
3. 8675058 - Electronic endoscope apparatus (2014-03-18),
4. 8633977 - Electronic endoscope apparatus (2014-01-21),
5. 8591404 - Bending device for endoscope (2013-11-26),
6. 8400498 - Endoscope apparatus (2013-03-19),
7. 8390941 - Imaging lens, imaging apparatus and portable terminal device (2013-03-05),
8. 8376935 - Observed image forming apparatus (2013-02-19),
9. 8372071 - High-frequency treatment tool (2013-02-12),
10. 8363108 - Autofocus system (2013-01-29),
11. 8350901 - Electronic endoscopic apparatus (2013-01-08),
12. 8345356 - Objective lens, optical pickup device, and optical recording/reproducing apparatus (2013-01-01),
13. 8328369 - Projecting zoom lens and projection type display apparatus (2012-12-11),
14. D671212 - Controller for endoscope (2012-11-20),
15. D670384 - Controller for endoscope (2012-11-06),
Company Overview
Fujinon Corporation, headquartered in Saitama, Japan, specializes in advanced endoscope technology and imaging systems. The company is renowned for its innovative solutions in medical devices, particularly in the development of high-quality endoscopes that enhance diagnostic and therapeutic procedures. Fujinon focuses on core technologies such as autofocus mechanisms, flexible tubes, and optical pickups, contributing significantly to the fields of healthcare and high-frequency tools. Its commitment to precision and quality positions it as a leader in the medical imaging sector.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

Fujinon Corporation USPTO Patent Assignee Logo
695 Patents

#7 in Saitama 343-0827

#300 in Japan

#1,440 in the World

Saitama, JP
Saitama, Japan

Fujinon Corporation

Forward Citations = 7,355

338 inventors:

goldMedal Kenichi Sato (34 out of 58 patents)

silverMedal Kazunori Abe (34 out of 49 patents)

bronzeMedal Tetsuya Ori (25 out of 61 patents)

4.  Yoshihiro Ito (22 out of 54 patents)

5.  Yu Kitahara (21 out of 27 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Fujinon Corporation. Retrieved from https://idiyas.com/company/fujinon

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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