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),

Company Overview

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.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

7 Patents

#2,288 in Tokyo

#5,459 in Japan

Tokyo, Japan

Asahi Optical Co., Ltd.

Forward Citations = 70

11 inventors:

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)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Asahi Optical Co., Ltd.. Retrieved from https://idiyas.com/company/asahi-optical-company

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]