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Isamu Hirai

USPTO Granted Patents = 54 (Patent Applications = 1)

CIPO Patents = 5

Average Co-Inventor Count = 1.8

ph-index = 11

Forward Citations = 498(Granted Patents)

Forward Citations (Not Self Cited) = 476(Dec 10, 2025)

Inventors with similar research interests:

Location History:

Fuchu, JP (1992 - 1993)
Tokyo, JP (1986 - 2015)

Company Filing History:

38 out of 3,132

Asahi Kogaku Kogyo Kabushiki Kaisha

10 out of 1,056

Pentax Corporation

Hoya Corporation

Ricoh Imaging Company, Ltd.

Years Active: 1986-2015

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Areas of Expertise:

Optical Device

Single Lens Reflex Camera

Photographing Apparatus

Exposure Control System

Photometry Device

Auto Focus Camera

Strobe Control Device

Image Pickup Device

Distance Measuring Device

Illuminance Varying Apparatus

Camera Shake Elimination

Multi-Area Brightness Measuring

54 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 9179049 - Optical device and single lens reflex camera (2015-11-03),

2. 8072508 - Photographing apparatus having first and second operation devices (2011-12-06),

3. 7961250 - Photographing apparatus having an exposure mode selection function (2011-06-14),

4. 7961245 - Image surface illuminance varying apparatus, exposure correcting apparatus, and exposure correcting method (2011-06-14),

5. 7692708 - Photometric apparatus (2010-04-06),

6. 7683410 - Image pickup device (2010-03-23),

7. 6718134 - AF auxiliary light projector for AF camera (2004-04-06),

8. 6707997 - Flash control system (2004-03-16),

9. 6603928 - Photometry device (2003-08-05),

10. 6571058 - Photometry device (2003-05-27),

11. 6567617 - Photometry device with light and colorimetric sensors (2003-05-20),

12. 6556788 - Photometry device (2003-04-29),

13. 6535693 - Photometry device (2003-03-18),

14. 6510285 - Strobe control device (2003-01-21),

15. 6510284 - Photometry device for a camera including external light sensor (2003-01-21),

Title: The Innovative Journey of Isamu Hirai

Introduction: Isamu Hirai is a renowned inventor hailing from Tokyo, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Isamu Hirai holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his continuous dedication to pushing the boundaries of technological advancement.

Career Highlights: With a career spanning over two decades, Isamu Hirai has worked with leading tech companies in Japan, spearheading research and development projects that have led to significant technological breakthroughs.

Collaborations: Throughout his career, Isamu Hirai has collaborated with top researchers, engineers, and scientists both locally and internationally, fostering a culture of innovation and knowledge sharing.

Conclusion: Isamu Hirai's passion for innovation and his relentless pursuit of technological excellence have solidified his position as a pioneering inventor in the global tech industry.

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