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Asahi Kogaku Kogyo Kabushiki Kaisha

USPTO Granted Patents = 3,132

CIPO Patents = 28

Trademarks = 14

Forward Citations = 46,993

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793 inventors (with patents filed for the assignee):

Masahiro Kawasaki (107 out of 142 patents)

Hiroshi Nomura (105 out of 302 patents)

Takayuki Ito (90 out of 135 patents)

4. Teruo Ouchi (80 out of 138 patents)

5. Harumi Aoki (78 out of 87 patents)

6. Tetsuya Abe (70 out of 159 patents)

7. Takashi Iizuka (69 out of 116 patents)

8. Norio Numako (67 out of 78 patents)

9. Koichi Maruyama (65 out of 129 patents)

10. Takamitsu Sasaki (63 out of 115 patents)

11. Tahei Morisawa (63 out of 68 patents)

12. Masahiro Oono (53 out of 60 patents)

13. Kazuyoshi Azegami (51 out of 53 patents)

14. Shinsuke Kohmoto (50 out of 56 patents)

15. Takeo Kobayashi (49 out of 65 patents)

Core Competencies:

Semiconductor Devices

Optical Member Inspection

Endoscope Probes

Image Compression

Antivibration Microscopes

Digital Cameras

Stereoscopic Endoscopes

Automatic Focusing

Zoom Lens Systems

Thermal Ink Jet Printers

Photometry Devices

Optical Systems

3,132 patents: Sort by Forward Citations

1. 6841417 - Semiconductor device and semiconductor assembly apparatus for semiconductor device (2005-01-11),

2. 6804386 - Optical member inspecting apparatus and method of inspection thereof (2004-10-12),

3. 6790176 - Probe of endoscope (2004-09-14),

4. 6788804 - Optical member inspecting apparatus and method of inspection thereof (2004-09-07),

5. 6697526 - Image compression and expansion apparatus (2004-02-24),

6. 6697513 - Optical member inspecting apparatus and method of inspection thereof (2004-02-24),

7. 6636625 - Optical member inspecting apparatus and method of inspection thereof (2003-10-21),

8. 6628457 - Antivibration microscope (2003-09-30),

9. 6573922 - Thermal head driver system and thermal image-forming apparatus therewith (2003-06-03),

10. D474789 - Binoculars (2003-05-21),

11. D473884 - Binoculars (2003-04-30),

12. D473247 - Binoculars (2003-04-16),

13. 6545523 - Air delivery unit for endoscope including pressure detecting apparatus (2003-04-08),

14. D472257 - Binoculars (2003-03-26),

15. D472216 - Conversion cable (2003-03-26),

Asahi Kogaku Kogyo Kabushiki Kaisha, also known as Asahi Optical Co., Ltd., is a Japanese company specializing in optical equipment and camera manufacturing. Established in 1919, the company is renowned for its high-quality camera lenses and binoculars. Asahi Kogaku Kogyo has a rich history of innovation and renowned brands like Pentax and Takumar under its umbrella. With a commitment to precision and excellence, the company continues to develop cutting-edge optical technologies and products for various industries.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Jan 6 2026

3,132 Patents

#35 in Tokyo

#71 in Japan

#286 in the World

Asahi Kogaku Kogyo Kabushiki Kaisha

Forward Citations = 46,993

793 inventors:

Masahiro Kawasaki (107 out of 142 patents)

Hiroshi Nomura (105 out of 302 patents)

Takayuki Ito (90 out of 135 patents)

4. Teruo Ouchi (80 out of 138 patents)

5. Harumi Aoki (78 out of 87 patents)

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