Yokohama, Japan

Hiroshi Itoh

This inventor holds 100 USPTO granted patents and 1 published patent application and 4 EPO patents, primarily in Information Processing (CPC class A61B3-14). Top assignees: Canon Kabushiki Kaisha, Lenovo (Singapore) Pte. Ltd., Mitsui Toatsu Chemicals, Incorporated. Active years: 1981-2026.

USPTO Granted Patents = 100 

% Patents Active = 77.0


Average Co-Inventor Count = 2.2

ph-index = 14

Forward Citations = 824(Granted Patents)

Forward Citations (Not Self Cited) = 790(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Numazu, JP (1989)
  • Yohkaichi, JP (1991 - 1996)
  • Komatsubara, JP (1998)
  • Zama, JP (1998)
  • Kamakura, JP (1995 - 2000)
  • Fuchu, JP (1995 - 2002)
  • Sodegaura, JP (2003)
  • Tochigi, JP (1992 - 2009)
  • Kyoto, JP (2009)
  • Utsunomiya, JP (1990 - 2010)
  • Machida, JP (2017)
  • Kanagawa-ken, JP (1997 - 2019)
  • Yokohama, JP (1981 - 2021)
  • Kanagawa, JP (1991 - 2021)
  • Sagamihara, JP (2004 - 2021)

Company Filing History:

goldMedal28 out of 92,901 
 
Canon Kabushiki Kaisha
 patents
silverMedal20 out of 4,433 
 
Lenovo (Singapore) Pte. Ltd.
 patents
bronzeMedal20 out of 1,379 
 
Mitsui Toatsu Chemicals, Incorporated
 patents
4. 6 out of 166,325 
 
International Business Machines Corporation
 patents
5. 5 out of 6,913 
 
Kyocera Corporation
 patents
6. 5 out of 1,816 
 
Mitsui Chemicals, Inc.
 patents
7. 4 out of 28,934 
 
Ricoh Company, Ltd.
 patents
8. 3 out of 3 
 
Oji Kako Co., Ltd.
 patents
9. 2 out of 1,010 
 
Central Glass Company, Limited
 patents
10. 2 out of 53,250 
 
Kabushiki Kaisha Toshiba
 patents
11. 2 out of 58,145 
 
Sony Corporation
 patents
12. 1 out of 1,430 
 
Agency of Industrial Science and Technology
 patents
13. 1 out of 13 
 
Denki Kogyo Company, Limited
 patents
14. 1 out of 864 
 
Kansai Paint Company, Ltd.
 patents
15. 1 out of 263 
 
Mitsubishi Tanabe Pharma Corporation
 patents
16. 1 out of 1 
 
Ojo Kako Co., Ltd.
 patent
17. 1 out of 746 
 
Toshiba Kikai Kabushiki Kaisha
 patents
18. 1 out of 113 
 
Toshiba Machine Co., Ltd.
 patents
19. 4 out of 834,453 
Other
 patents
where one patent can have more than one assignee

Years Active: 1981-2026

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Areas of Expertise:
Information Processing
Portable Devices
Ophthalmologic Imaging
Keyboard Input
Cloud Storage
Memory Management
False Input Reduction
Electronic Apparatus
Fundus Camera
Software Keyboards
Machine Translation
Biochemical Reaction
100 patents (USPTO):Explore Patents

Title: **Hiroshi Itoh: Innovator and Patent Holder**

Introduction

Hiroshi Itoh, based in Yokohama, Japan, is a prolific inventor recognized for his significant contributions to technology with a remarkable total of 98 patents. His innovative spirit and dedication to advancing portable technology have made him a respected figure in the field of information devices.

Latest Patents

Among his latest inventions, Itoh has developed a *Portable Information Device*, which features a unique design incorporating two chassis with displays interconnected by a sophisticated hinge mechanism. This design enhances functionality while maintaining portability. Additionally, his invention of a *Keyboard Input Mode Switching Apparatus* showcases his ability to integrate advanced technology. This apparatus intelligently determines the operational state of a keyboard and switches input modes accordingly, enhancing user experience in information handling devices.

Career Highlights

Itoh has had a distinguished career, working with renowned companies such as Canon and Mitsui Toatsu Chemicals, Incorporated. His tenure in these organizations has allowed him to apply his inventive skills and contribute to groundbreaking technologies in the consumer electronics and chemical industries.

Collaborations

Throughout his career, Itoh has collaborated with notable colleagues including Atsuhiko Nitta and Hideo Kamio. These partnerships have fostered a creative environment that has led to innovative solutions and advancements in their respective fields.

Conclusion

Hiroshi Itoh's expansive portfolio of patents and his impactful career exemplify his role as a leading inventor in the technology sector. His dedication to innovation continues to inspire future developments in portable information devices and beyond. As he moves forward, the impact of his work will undoubtedly resonate through future technological advancements.

Profile summary based on public USPTO records.
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