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For the Inventor, By the Inventor

Suwa, Japan

Nittoh Inc.


USPTO Granted Patents = 41

% Expired Patents = 4.9


Forward Citations = 25

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22 inventors (with patents filed for the assignee):

goldMedal Takahiko Matsuo (13 out of 15 patents)

silverMedal Takafumi Hanaoka (5 out of 5 patents)

bronzeMedal Kazuhiro Oe (4 out of 6 patents)

4.  Takuya Kageyama (4 out of 7 patents)

5.  Jeffrey Alan Gohman (3 out of 41 patents)

6.  Junichi Endo (3 out of 3 patents)

7.  Keiichi Mochizuki (3 out of 6 patents)

8.  Kohei Kaneko (2 out of 2 patents)

9.  Takuya Fujimatsu (2 out of 2 patents)

10.  Takashi Yamaguchi (2 out of 4 patents)

11.  Takashi Iwamoto (2 out of 4 patents)

12.  Akira Sawamoto (1 out of 1 patent)

13.  Kenji Iijima (1 out of 1 patent)

14.  Yasuhiro Koike (1 out of 58 patents)

15.  Akihiro Tagaya (1 out of 5 patents)


Core Competencies:
Lens Barrel
Projection Device
Imaging Apparatus
Optical Filter
Zoom Lens System
Optical Diaphragm
Projection Optical System
Image Pickup
Reflecting Mirror
Cylindrical Lens
Illumination Module
Optical Device

41 patents:

1. 12523842 - Lens barrel (2026-01-13),
2. 12487436 - Image-forming optical system, projection device, and imaging device (2025-12-02),
3. 12411323 - Optical system having intermediate image formed therein (2025-09-09),
4. 12393001 - Lens for filming (2025-08-19),
5. 12111486 - Optical filter and imaging lens unit (2024-10-08),
6. 12019356 - Lens barrel and interchangeable lens camera (2024-06-25),
7. 11867889 - Lens system and imaging apparatus (2024-01-09),
8. 11815792 - Lens barrel (2023-11-14),
9. 11720007 - Projection optical system and projector apparatus (2023-08-08),
10. 11550115 - Lens barrel and camera device (2023-01-10),
11. 11536935 - Lens system and image pickup apparatus (2022-12-27),
12. 11500134 - Optical diaphragm device, lens barrel and imaging device or projection device (2022-11-15),
13. 11467372 - Lens system and image pickup apparatus (2022-10-11),
14. 11378788 - Zoom lens system and imaging apparatus (2022-07-05),
15. 11314042 - Optical system for image pickup, and image pickup device (2022-04-26),
Company Overview
Nittoh Inc., based in Suwa, Japan, specializes in the development and manufacturing of advanced optical technologies. The company focuses on image-forming optical systems and projection devices, catering to a variety of imaging applications. Their expertise encompasses optical filters, lens barrels, zoom lens systems, and optical diaphragm devices, which are integral to high-performance projection optical assemblies. Nittoh's commitment to innovation positions it as a key player in the optical technology sector, serving diverse industries with cutting-edge solutions.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

41 Patents

#1 in Suwa

#1,944 in Japan

#16,725 in the World

Suwa, JP
Suwa, Japan

Nittoh Inc.

Forward Citations = 25

22 inventors:

goldMedal Takahiko Matsuo (13 out of 15 patents)

silverMedal Takafumi Hanaoka (5 out of 5 patents)

bronzeMedal Kazuhiro Oe (4 out of 6 patents)

4.  Takuya Kageyama (4 out of 7 patents)

5.  Jeffrey Alan Gohman (3 out of 41 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Nittoh Inc.. Retrieved from https://idiyas.com/company/nittoh

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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