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For the Inventor, By the Inventor

Sayama, Japan

Hiroo Fujita

This inventor holds 13 USPTO granted patents. Top assignee: Citizen Watch Company, Ltd.. Active years: 1978-2006.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroo Fujita. Retrieved from https://idiyas.com/inventor/hiroo-fujita

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 = 84.6

Average Co-Inventor Count = 1.3

ph-index = 9

Forward Citations = 146(Granted Patents)


Location History:

  • Tanashi, JP (1986 - 1987)
  • Tokorozawa, JP (2002)
  • Sayama, JP (1978 - 2006)

Company Filing History:

goldMedal13 out of 2,004 
 
Citizen Watch Company, Ltd.
 patents

Years Active: 1978-2006

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13 patents (USPTO):Explore Patents
1. 7009718 - Grating pattern projection apparatus using liquid crystal grating (2006-03-07),
2. 6492637 - Dimension measuring device (2002-12-10),
3. 5481360 - Optical device for measuring surface shape (1996-01-02),
4. 5166820 - Light beam scanning apparatus (1992-11-24),
5. 5121247 - Two-dimensional optical scanning system (1992-06-09),
6. 4994990 - Micro-dimensional measurement apparatus (1991-02-19),
7. 4910690 - Micro-dimensional measurement apparatus (1990-03-20),
8. 4679941 - Micro-dimensional measurement apparatus (1987-07-14),
9. 4650330 - Surface condition measurement apparatus (1987-03-17),
10. 4577967 - Surface shape measurement apparatus (1986-03-25),
11. 4356483 - Matrix drive system for liquid crystal display (1982-10-26),
12. 4300137 - Matrix driving method for electro-optical display device (1981-11-10),
13. 4100540 - Method of driving liquid crystal matrix display device to obtain maximum (1978-07-11),

Title: Hiroo Fujita: A Pioneer in Dimension Measurement Technology

Introduction

Hiroo Fujita, an accomplished inventor based in Sayama, Japan, has made significant contributions to the field of measurement technology. With a total of 13 patents to his name, Fujita's work showcases his innovative spirit and dedication to advancing precision in various applications.

Latest Patents

Among his most notable inventions is the "Grating pattern projection apparatus using liquid crystal grating." This cutting-edge lattice pattern projector is designed to measure three-dimensional shapes with enhanced accuracy while reducing measurement time. Its unique configuration includes a light source section, a liquid crystal lattice, a projection section for directing the lattice pattern onto measurement objects, and a detection section to capture deformed lattice patterns for analysis. Another significant patent, the "Dimension measuring device," consists of a moving member for measurement, a grid device that moves with it, and an optical device that irradiates the grid. This invention generates non-sinusoidal wave signals based on the moving distance, providing a high level of precision.

Career Highlights

Fujita is affiliated with Citizen Watch Company, Ltd., where he applies his innovative thinking and technical expertise. His work at this renowned company emphasizes the importance of accuracy and efficiency within the realm of measuring technologies, thereby furthering Citizen's reputation for precision engineering.

Collaborations

In his professional journey, Hiroo Fujita has worked alongside esteemed colleagues such as Akira Tsuzuki and Shigeru Morokawa. Their collaborations have enabled the development of groundbreaking technologies, enriching the field of measurement and reinforcing the innovative culture at Citizen Watch Company.

Conclusion

Hiroo Fujita stands out as a prolific inventor whose contributions to measurement technology reflect his commitment to accuracy and innovation. Through his patents and collaborations, he continues to influence advancements in this important field, paving the way for future developments in dimension measurement and beyond.

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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