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Nippon Kogaku K.k.

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USPTO Granted Patents = 849

Forward Citations = 11,767

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434 inventors (with patents filed for the assignee):

Osamu Maida (51 out of 52 patents)

Sakuji Watanabe (33 out of 33 patents)

Hiroshi Hasegawa (28 out of 115 patents)

4. Kenji Toyoda (27 out of 36 patents)

5. Hiroshi Wakabayashi (25 out of 124 patents)

6. Toru Fukuhara (24 out of 41 patents)

7. Akikazu Tanimoto (23 out of 53 patents)

8. Ken Utagawa (23 out of 83 patents)

9. Akira Ogasawara (22 out of 47 patents)

10. Yoshiyuki Nakano (22 out of 25 patents)

11. Takashi Saegusa (20 out of 54 patents)

12. Yoshiaki Ohtsubo (18 out of 27 patents)

13. Atsushi Kawahara (17 out of 18 patents)

14. Kyoichi Suwa (17 out of 39 patents)

15. Sunao Ishizaka (17 out of 17 patents)

Core Competencies:

Projection Optical Apparatus

Magnetooptical Recording

Lens Meter

Alignment Method

Zoom Lens

Camera Systems

Focusing Apparatus

Laser Processing

Optical Position Measurement

Pattern Detection

Imaging Device

Photographic Masks

849 patents: Sort by Forward Citations

1. 5337097 - Projection optical apparatus (1994-08-09),

2. 5204193 - Recording magnetooptical recording medium (1993-04-20),

3. 4866546 - Recording and reproducing apparatus for disk-type recording media (1989-09-12),

4. 4833051 - Protective device for photographic masks (1989-05-23),

5. 4782239 - Optical position measuring apparatus (1988-11-01),

6. 4780747 - Projection exposure apparatus (1988-10-25),

7. 4780617 - Method for successive alignment of chip patterns on a substrate (1988-10-25),

8. 4780616 - Projection optical apparatus for mask to substrate alignment (1988-10-25),

9. 4779979 - Automatic lens meter (1988-10-25),

10. 4776693 - Foreign substance inspecting system including a calibration standard (1988-10-11),

11. 4775898 - Display device in a video instrument (1988-10-04),

12. 4775229 - Fresnel lens in a finder optical system (1988-10-04),

13. 4772909 - Lens drive control apparatus for automatic focusing (1988-09-20),

14. 4770533 - Apparatus for detecting position of an object such as a semiconductor (1988-09-13),

15. 4770531 - Stage device with levelling mechanism (1988-09-13),

Company Overview

Nippon Kogaku K.K., known globally as Nikon, is a prominent player in the optical apparatus industry, headquartered in Tokyo, Japan. The company specializes in the development and manufacturing of advanced optical technologies, including projection optical apparatus, camera systems, and various lens solutions. With a strong focus on innovation, Nikon also explores magnetooptical recording and laser processing, positioning itself at the forefront of optical engineering and imaging solutions. Its commitment to precision and quality has established Nikon as a trusted name in the field.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Nov 3 2026

849 Patents

#123 in Tokyo

#252 in Japan

#1,185 in the World

Nippon Kogaku K.k.

Forward Citations = 11,767

434 inventors:

Osamu Maida (51 out of 52 patents)

Sakuji Watanabe (33 out of 33 patents)

Hiroshi Hasegawa (28 out of 115 patents)

4. Kenji Toyoda (27 out of 36 patents)

5. Hiroshi Wakabayashi (25 out of 124 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Nippon Kogaku K.k.. Retrieved from https://idiyas.com/company/nippon-kogaku-k-k

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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