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For the Inventor, By the Inventor

Saitama, Japan

Naomasa Shiraishi

This inventor holds 106 USPTO granted patents and 5 EPO patents, primarily in Projection Exposure Apparatus (CPC class 355 53). Top assignee: Nikon Corporation. Active years: 1992-2017.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Naomasa Shiraishi. Retrieved from https://idiyas.com/inventor/naomasa-shiraishi

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

Calculating rank
USPTO Granted Patents = 106

% Patents Active = 73.6

 

Average Co-Inventor Count = 1.4

ph-index = 29

Forward Citations = 2,450(Granted Patents)

Forward Citations (Not Self Cited) = 2,298(Dec 10, 2025)


Inventors with similar research interests:

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Location History:

  • Kanagawa-ken, JP (1997)
  • Kanagawa, JP (1995 - 2001)
  • Yokohama, JP (2001)
  • Saitama-ken, JP (1998 - 2002)
  • Tokyo, JP (2003 - 2004)
  • Chiyoda-ku, JP (2004)
  • Kawasaki, JP (1993 - 2005)
  • Urawa, JP (1992 - 2010)
  • Saitama, JP (2003 - 2017)

Company Filing History:

goldMedal106 out of 9,002 
 
Nikon Corporation
 patents

Years Active: 1992-2017

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Areas of Expertise:
Projection Exposure Apparatus
Optical System
Exposure Method
Device Manufacturing
Photomask
Catadioptric Optical System
Position Detection
Luminous Flux Distribution
Temperature Control
Flat Panel Display
Microdevice Production
Intensity Distribution
106 patents (USPTO):Explore Patents
1. 9760014 - Illumination optical apparatus and projection exposure apparatus (2017-09-12),
2. 9423698 - Illumination optical apparatus and projection exposure apparatus (2016-08-23),
3. 9423697 - Illumination optical apparatus and projection exposure apparatus (2016-08-23),
4. 9244359 - Illumination optical apparatus and projection exposure apparatus (2016-01-26),
5. 9146476 - Illumination optical apparatus and projection exposure apparatus (2015-09-29),
6. 9140993 - Illumination optical apparatus and projection exposure apparatus (2015-09-22),
7. 9140992 - Illumination optical apparatus and projection exposure apparatus (2015-09-22),
8. 8440375 - Exposure method and electronic device manufacturing method (2013-05-14),
9. 8431328 - Exposure method, method for manufacturing flat panel display substrate, and exposure apparatus (2013-04-30),
10. 7884921 - Illumination optical apparatus, projection exposure apparatus, projection optical system, and device manufacturing method (2011-02-08),
11. 7656504 - Projection exposure apparatus with luminous flux distribution (2010-02-02),
12. 7432993 - Display device manufacturing method and display device (2008-10-07),
13. 7319508 - Projection exposure apparatus and method, catadioptric optical system and manufacturing method of devices (2008-01-15),
14. 7301605 - Projection exposure apparatus and method, catadioptric optical system and manufacturing method of devices (2007-11-27),
15. 7109508 - Method of detecting position of mark on substrate, position detection apparatus using this method, and exposure apparatus using this position detection apparatus (2006-09-19),

Title: Naomasa Shiraishi: A Trailblazer in Innovation

Introduction:

Naomasa Shiraishi, a prolific inventor based in Saitama, Japan, is a visionary whose passion for innovation and unwavering commitment to excellence have left an indelible mark on the world of technology. With 106 patents to his name, Shiraishi's groundbreaking work continues to inspire the next generation of inventors, shaping the future of innovation.

Latest Patents:

Among his latest patents are the Illumination Optical Apparatus and Projection Exposure Apparatus. These cutting-edge inventions showcase Shiraishi's expertise in optical technologies, particularly in optimizing the polarization state of illumination light to enhance the efficiency of optical integrators and reduce light quantity loss during mask illumination.

Career Highlights:

Shiraishi's illustrious career is primarily associated with Nikon Corporation, a renowned leader in imaging and optical technologies. His contributions to the company's research and development efforts have been instrumental in driving technological advancements in the field of optics.

Collaborations:

Throughout his career, Shiraishi has collaborated with esteemed colleagues such as Nobutaka Magome and Soichi Owa. Together, they have worked on innovative projects, pushing the boundaries of optical engineering and paving the way for groundbreaking solutions in the realm of projection and illumination systems.

Conclusion:

Naomasa Shiraishi's remarkable legacy as an inventor and innovator is a testament to his relentless pursuit of excellence and his dedication to pushing the boundaries of technological innovation. His visionary work will continue to inspire and shape the future of the industry for years to come, leaving a lasting impact on the world of technology.

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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