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For the Inventor, By the Inventor

Tokyo, Japan

Masaaki Haga

This inventor holds 24 USPTO granted patents, primarily in Camera Technology. Top assignees: Asahi Kogaku Kogyo Kabushiki Kaisha, Pentax Corporation, Asahi Kogaku Kogyo K.k.. Active years: 1993-2008.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masaaki Haga. Retrieved from https://idiyas.com/inventor/masaaki-haga

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

Calculating rank
USPTO Granted Patents = 24

% Patents Active = 100.0

Average Co-Inventor Count = 1.2

ph-index = 10

Forward Citations = 277(Granted Patents)


Location History:

  • Toky, JP (1998)
  • Tokyo, JP (1993 - 2008)

Company Filing History:

goldMedal12 out of 3,132 
 
Asahi Kogaku Kogyo Kabushiki Kaisha
 patents
silverMedal10 out of 1,056 
 
Pentax Corporation
 patents
bronzeMedal2 out of 176 
 
Asahi Kogaku Kogyo K.k.
 patents

Years Active: 1993-2008

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Areas of Expertise:
Convertible Lens
Single-Lens Reflex Camera
Digital Camera
Exposure-Condition Setting
Battery Grip
Camera Body
Learning Function
Built-In Strobe
Information Setting Dial
Electronic Flash
24 patents (USPTO):Explore Patents
1. D574026 - Convertible lens for single-lens reflex camera (2008-07-29),
2. D542825 - Digital single-lens reflex camera (2007-05-15),
3. D542824 - Digital single-lens reflex camera (2007-05-15),
4. D542823 - Digital single-lens reflex camera (2007-05-15),
5. D524351 - Digital camera (2006-07-04),
6. D524346 - Digital camera (2006-07-04),
7. D503185 - Battery grip for single-lens reflex camera (2005-03-22),
8. D491597 - Digital camera (2004-06-16),
9. D491596 - Digital camera (2004-06-16),
10. D491593 - Digital camera (2004-06-16),
11. 6427052 - Exposure-condition setting device for camera (2002-07-30),
12. D451940 - Single-lens reflex camera body (2001-12-12),
13. D449327 - Single-lens reflex digital camera body (2001-10-17),
14. D413346 - Single-lens reflex camera body (1999-08-31),
15. 5774746 - Camera with learning function (1998-06-30),

Title: Masaaki Haga – Innovator in Photography Technology

Introduction

Masaaki Haga, based in Tokyo, Japan, is a distinguished inventor known for his contributions to photography technology. With a remarkable portfolio of 24 patents, Haga has played a significant role in advancing the functionality and quality of cameras.

Latest Patents

Among his notable inventions are the Convertible Lens for Single-Lens Reflex Cameras and Digital Single-Lens Reflex Camera. These innovations have greatly enhanced the versatility and performance of modern photographic equipment.

Career Highlights

Haga's esteemed career includes important positions at companies such as Asahi Kogaku Kogyo Kabushiki Kaisha, which is known for its optical products, and Pentax Corporation, where he made significant strides in camera technology. His work has left a lasting impact on the industry.

Collaborations

Throughout his career, Haga has collaborated with talented professionals, including Hideaki Tsuji and Tadayuki Kirigaya. These collaborations have fostered a creative environment that has led to numerous advancements in imaging technology.

Conclusion

Masaaki Haga's innovative spirit and dedication to enhancing photographic technology have established him as a key figure in the field. His impressive array of patents and collaborations exemplify his commitment to pushing the boundaries of invention in photography.

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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