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For the Inventor, By the Inventor

Sakai, Japan

Keiji Yamazaki

This inventor holds 13 USPTO granted patents. Top assignee: Minolta Camera Kabushiki Kaisha. Active years: 1978-1996.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keiji Yamazaki. Retrieved from https://idiyas.com/inventor/keiji-yamazaki

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

USPTO Granted Patents = 13

% Patents Active = 100.0

Average Co-Inventor Count = 2.3

ph-index = 6

Forward Citations = 91(Granted Patents)


Location History:

  • Osaka, JP (1985 - 1992)
  • Sakai, JP (1978 - 1996)

Company Filing History:

goldMedal13 out of 2,979 
 
Minolta Camera Kabushiki Kaisha
 patents

Years Active: 1978-1996

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13 patents (USPTO):Explore Patents
1. 5572361 - Binocular system with automatic diopter power adjustment (1996-11-05),
2. 5089834 - Mounting devices for removably mounting an accessory on a camera (1992-02-18),
3. 4853302 - Battery compartment (1989-08-01),
4. 4851868 - Flash device for use in photography (1989-07-25),
5. 4743929 - Flash device for use in photography (1988-05-10),
6. 4512647 - Automatic diaphragm control and mirror release devices for cameras (1985-04-23),
7. 4355875 - Automatic diaphragm control device for cameras (1982-10-26),
8. 4339186 - Automatic diaphragm control and mirror release devices for cameras (1982-07-13),
9. 4257697 - Projecting member carried by the base plate for cameras (1981-03-24),
10. 4217044 - Indicating devices for camera viewfinders (1980-08-12),
11. 4150889 - Indicating device for single lens reflex camera (1979-04-24),
12. 4140380 - Exposure indicating devices for single reflex cameras (1979-02-20),
13. 4118723 - Camera indicating means (1978-10-03),

Title: Keiji Yamazaki: Innovator in Optical Technology

Introduction

Keiji Yamazaki is a prominent inventor based in Sakai, Japan. He has made significant contributions to the field of optical technology, holding a total of 13 patents. His work focuses on enhancing user experience in optical devices, particularly in telescopes and cameras.

Latest Patents

One of his latest innovations is a binocular system with automatic diopter power adjustment. This system allows for the adjustment of dioptric power only after the distance between a pair of optical systems has been set. It features a memory that stores pupil distance and dioptric power correction amounts for each user. When a user operates the telescope, their specific adjustments are automatically made, enhancing usability.

Another notable patent is for mounting devices designed for removably attaching accessories to cameras. This device includes a mounting member that fits with an accessory, allowing it to be mounted by sliding. The member is molded from plastic and features eaves-like portions that help determine both the horizontal and vertical positions of the accessory relative to the camera. This innovative design streamlines the process of attaching accessories, making it more user-friendly.

Career Highlights

Keiji Yamazaki is currently associated with Minolta Camera Kabushiki Kaisha, where he continues to develop cutting-edge optical technologies. His work has significantly impacted the way users interact with optical devices, making them more accessible and efficient.

Collaborations

Throughout his career, Yamazaki has collaborated with notable colleagues, including Hiroshi Hosomizu and Makoto Kamiya. These partnerships have fostered a creative environment that has led to numerous advancements in optical technology.

Conclusion

Keiji Yamazaki's contributions to optical technology through his innovative patents have made a lasting impact on the industry. His work continues to enhance user experiences in the realm of telescopes and cameras.

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]
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