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Trademarks = 1

Forward Citations = 70

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11 inventors (with patents filed for the assignee):

Koichiro Nishikawa (1 out of 29 patents)

Norio Numako (1 out of 78 patents)

Takao Nishida (1 out of 52 patents)

4. Atsumi Kaneko (1 out of 31 patents)

5. Masato Hara (1 out of 39 patents)

6. Takeo Kobayashi (1 out of 65 patents)

7. Yasuo Moriya (1 out of 12 patents)

8. Satoru Tachihara (1 out of 30 patents)

9. Isamu Hashimoto (1 out of 9 patents)

10. Tsukumo Nobusawa (1 out of 12 patents)

11. Kazunori Kagei (1 out of 1 patent)

7 patents: Sort by Forward Citations

1. 4868377 - Optical pickup for reading optical disk information provided with error (1989-09-19),

2. 4855782 - Display device for indicating the setting of a zoom lens (1989-08-08),

3. 4855772 - Electronically controlled camera (1989-08-08),

4. 4678910 - Reference position-detecting device for photoelectric encoder (1987-07-07),

5. 4590248 - Method for producing a plastic lens using tertiary alkyl peroxy allyl (1986-05-20),

6. 4550987 - Small size telephoto lens (1985-11-05),

7. 4008965 - Method and device for use in detecting a precise focusing point (1977-02-22),

Asahi Optical Co., Ltd. is a Japanese technology company that specializes in the manufacture of optical equipment. Founded in 1919, the company has a long history of producing high-quality cameras, lenses, and binoculars. Asahi Optical is known for its innovative designs and commitment to excellence in its products.

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Company Badge

USPTO Data Jan 1 1976 - Jan 6 2026

7 Patents

#2,027 in Tokyo

#5,307 in Japan

Tokyo, Japan

Asahi Optical Co., Ltd.