Seijiro Tokutomi

This inventor holds 18 USPTO granted patents, primarily in Camera Focus Detection. Top assignees: Asahi Kogaku Kogyo Kabushiki Kaisha, Asahi Kogaku Kogyo K.k.. Active years: 1976-1986.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Seijiro Tokutomi. Retrieved from https://idiyas.com/inventor/seijiro-tokutomi

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank

USPTO Granted Patents = 18

% Patents Active = 100.0

Average Co-Inventor Count = 2.2

ph-index = 6

Forward Citations = 164(Granted Patents)

Location History:

Kawagoe, JA (1976)
Tokyo, JA (1978)
Tokyo, JP (1979 - 1986)

Company Filing History:

17 out of 3,132

Asahi Kogaku Kogyo Kabushiki Kaisha

patents

1 out of 176

Asahi Kogaku Kogyo K.k.

patents

Years Active: 1976-1986

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Areas of Expertise:

Focus Detecting Device

Focusing Position Detection

SLR Camera

Automatic Focalizing

Display Device

Electrically Operated Camera

Camera Control

Abnormal Operation Warning

Dual Purpose Finder

Electronic Strobe

Sector Shaped Mirror

18 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 4600830 - Focus detecting device (1986-07-15),

2. 4580042 - Focusing position detecting device using a sector shaped mirror (1986-04-01),

3. 4408853 - Focus detecting device (1983-10-11),

4. 4384770 - Focus detecting device (1983-05-24),

5. 4313657 - Display device for focus detecting and indicating device for camera (1982-02-02),

6. 4293206 - Electrically operated automatic focalizing camera (1981-10-06),

7. 4293205 - Camera focus detecting device (1981-10-06),

8. 4265520 - Focus detecting device in single lens reflex camera (1981-05-05),

9. 4258989 - Focus detecting device (1981-03-31),

10. 4253751 - Camera focus detecting device (1981-03-03),

11. 4244643 - Manual setting device in digital type electrical control camera (1981-01-13),

12. 4230401 - Camera focus detecting device (1980-10-28),

13. 4192589 - Abnormal operation warning apparatus for a camera (1980-03-11),

14. 4180309 - Focal point detecting device for SLR camera (1979-12-25),

15. 4172645 - Dual purpose finder display for single lens reflex camera (1979-10-30),

Title: Seijiro Tokutomi: Pioneering Inventor from Tokyo

Introduction: Seijiro Tokutomi is a renowned inventor hailing from Tokyo, Japan, known for his groundbreaking contributions to various technological fields.

Latest Patents: Seijiro Tokutomi holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his innovative spirit and forward-thinking approach.

Career Highlights: Throughout his illustrious career, Seijiro Tokutomi has worked with leading research institutions and tech companies, spearheading projects that have revolutionized the way we interact with technology on a daily basis.

Collaborations: Seijiro Tokutomi has collaborated with top engineers, scientists, and designers from around the world, fostering a culture of innovation and creativity that has led to the development of cutting-edge products and solutions.

Conclusion: Seijiro Tokutomi's passion for innovation and his relentless pursuit of excellence have solidified his reputation as a trailblazer in the world of technology, inspiring future generations of inventors to push the boundaries of what is possible.

Profile summary based on public USPTO records.

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]