Tokyo, Japan

Hiroshi Satoh

This inventor holds 89 USPTO granted patents, plus 1 CIPO patent and 14 EPO patents, primarily in Image Processing Technology (CPC class B41J2-1752). Top assignees: Nissan Motor Company Limited, Seiko Epson Corporation, Canon Kabushiki Kaisha. Active years: 1981-2024.


% Patents Active = 78.7


 

Average Co-Inventor Count = 2.7

ph-index = 18

Forward Citations = 1,222(Granted Patents)

Forward Citations (Not Self Cited) = 719(Dec 10, 2025)


Inventors with similar research interests:

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Location History:

  • Seto, JP (1989)
  • Stanford, CA (US) (1989)
  • Palo Alto, CA (US) (1990)
  • Kodaira, JP (1994 - 1997)
  • Yokosuka, JP (1990 - 1998)
  • Suginami, JP (1998)
  • Kanagawa Pref., JP (1998)
  • Hitachi, JP (1991 - 2000)
  • Chiyoda-ku, JP (2000)
  • Moriya-machi, JP (2000 - 2001)
  • Ibaraki-ken, JP (2002)
  • Kitasomua-gun, JP (2003)
  • Mishima, JP (2001 - 2005)
  • Toride, JP (2005)
  • Kanagawa-ken, JP (2007)
  • Niraski, JP (2008)
  • Yamanashi-ken, JP (2007 - 2009)
  • Yamanashi, JP (2009 - 2015)
  • Yokohama, JP (2004 - 2016)
  • Kanagawa, JP (2008 - 2017)
  • Atsugi, JP (2015 - 2018)
  • Tokyo, JP (1981 - 2019)
  • Nirasaki, JP (2013 - 2024)

Company Filing History:

goldMedal22 out of 13,420 
 
Nissan Motor Company Limited
 patents
silverMedal13 out of 34,176 
 
Seiko Epson Corporation
 patents
bronzeMedal10 out of 92,750 
 
Canon Kabushiki Kaisha
 patents
48 out of 42,713 
 
Hitachi, Ltd.
 patents
54 out of 25 
 
Asai Germanium Research Institute
 patents
64 out of 817 
 
Mitsui Minings & Melting Co., Ltd.
 patents
73 out of 328 
 
Hodogaya Chemical Co., Ltd.
 patents
83 out of 331 
 
Jx Nippon Oil Energy Corporation
 patents
93 out of 1,256 
 
Kawasaki Steel Corporation
 patents
103 out of 2,861 
 
Pioneer Electronic Corporation
 patents
111 out of 1 
 
Hitachi Machinery and Engineering, Ltd.
 patent
121 out of 105 
 
Kawasaki Microelectronics, Inc.
 patents
131 out of 142 
 
Koganei Corporation
 patents
141 out of 1,648 
 
Mitsubishi Jidosha Kogyo Kabushiki Kaisha
 patents
151 out of 1,326 
 
Mitsubishi Jukogyo Kabushiki Kaisha
 patents
161 out of 36,624 
 
Nec Corporation
 patents
171 out of 2,676 
 
Pioneer Corporation
 patents
181 out of 28,906 
 
Ricoh Company, Ltd.
 patents
191 out of 1 
 
Ryuichi Sato
 patent
201 out of 116 
 
Shimizu Construction Co., Ltd.
 patents
211 out of 8,227 
 
Tdk Corporation
 patents
221 out of 14 
 
Unisia Jkc Steering Systems Co., Ltd.
 patents
237 out of 834,307 
Other
 patents
where one patent can have more than one assignee

Years Active: 1981-2024

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Areas of Expertise:
Image Processing
Printing Systems
Traffic Signal Recognition
Target Detection
Antenna Devices
Fermentation Methods
Vehicle Detection
Data Communication
Road Surface Detection
Liquid Ejecting Apparatus
Pressure State Indicator
Electrophotographic Apparatus
89 patents (USPTO):Explore Patents

Title: Hiroshi Satoh: A Pioneer in Astaxanthin Production

Introduction

Hiroshi Satoh is a prominent inventor based in Tokyo, Japan, known for his significant contributions to the field of biotechnology. With an impressive portfolio of 41 patents, Satoh has made substantial advancements, particularly in the production of carotenoids, including astaxanthin. His innovative approaches have aimed at improving the efficiency and cost-effectiveness of biotechnological processes.

Latest Patents

Among his most recent inventions, Satoh has developed a method for producing astaxanthin by fermentation. The objective of this invention is to microbiologically create astaxanthin at high concentrations while minimizing the production of canthaxanthin. This technique involves culturing a bacterium that produces both astaxanthin and canthaxanthin in a biotin-rich medium. Notably, the resulting ratio of canthaxanthin to astaxanthin is significantly lower compared to cultures grown in biotin-free environments. This innovation not only enhances the production process but also contributes to more sustainable practices in carotenoid manufacturing.

Career Highlights

Hiroshi Satoh has had a successful career with esteemed organizations, including Canon Kabushiki Kaisha. His extensive experience in research and development within these institutions has bolstered his credibility as a leading innovator in his field.

Collaborations

Throughout his career, Satoh has collaborated with various professionals, including notable coworkers Yasushi Shimizu and Akira Ishikawa. These partnerships have helped foster collaborative innovation and have led to groundbreaking advancements in the production of valuable compounds like astaxanthin.

Conclusion

Hiroshi Satoh's contributions to the field of biotechnology, particularly in the efficient production of astaxanthin, underscore the importance of innovation in addressing modern challenges. His extensive patent portfolio reflects a commitment to advancing scientific understanding and practical applications. As technologies continue to evolve, Satoh remains a key figure in the ongoing quest for sustainable and efficient bioprocessing methods.

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