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For the Inventor, By the Inventor

Niigata, Japan

Hitoshi Sakamoto

This inventor holds 13 USPTO granted patents and 1 EPO patent. Top assignees: Mitsubishi Gas Chemical Company, Inc., Akebono Research and Developement Centre Ltd., Mitsubishi Gas Chemical Company Co., Inc.. Active years: 1994-2017.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hitoshi Sakamoto. Retrieved from https://idiyas.com/inventor/hitoshi-sakamoto-i2nztoeu

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

Calculating rank
USPTO Granted Patents = 13

% Patents Active = 92.3

 

Average Co-Inventor Count = 3.6

ph-index = 3

Forward Citations = 24(Granted Patents)


Location History:

  • Ibaraki-ken, JP (1997)
  • Tukuba, JP (1999 - 2002)
  • Ibaraki, JP (1994 - 2007)
  • Tsukuba, JP (1996 - 2015)
  • Niigata, JP (2015 - 2017)

Company Filing History:

goldMedal12 out of 2,304 
 
Mitsubishi Gas Chemical Company, Inc.
 patents
silverMedal1 out of 73 
 
Akebono Research and Developement Centre Ltd.
 patents
bronzeMedal1 out of 1 
 
Mitsubishi Gas Chemical Company Co., Inc.
 patent
where one patent can have more than one assignee

Years Active: 1994-2017

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13 patents (USPTO):Explore Patents
1. 9604979 - Pyrroloquinoline quinone alcohol adduct (2017-03-28),
2. 9321770 - Crystals of pyrroloquinolinequinone sodium salts (2016-04-26),
3. 9174983 - Pyrroloquinoline quinone disodium salt crystal and method for producing the same (2015-11-03),
4. 9163014 - Crystals of pyrroloquinolinequinone sodium salts (2015-10-20),
5. 7256157 - Carbon material for electric double layer capacitor electrodes (2007-08-14),
6. 6488720 - Anode material for non-aqueous lithium secondary batteries, a method for the production thereof, and batteries using such anode materials (2002-12-03),
7. 6228343 - Method for producing isotropic pitch, activated carbon fibers and carbon materials for non-aqueous secondary battery anodes (2001-05-08),
8. 5944980 - Method for producing isotropic pitch, activated carbon fibers and carbon (1999-08-31),
9. 5609800 - Process for producing high-density and high-strength carbon artifacts (1997-03-11),
10. 5547654 - Self-adhesive carbonaceous grains and high density carbon artifacts (1996-08-20),
11. 5484520 - Self-adhesive carbonaceous grains and process for producing high-density (1996-01-16),
12. 5372702 - Composition for use in the production of composite carbon materials, (1994-12-13),
13. 5279777 - Process for the production of friction materials (1994-01-18),

Title: Hitoshi Sakamoto: Innovator in Pyrroloquinoline Quinone Technologies

Introduction

Hitoshi Sakamoto is a notable inventor based in Niigata, Japan, renowned for his contributions to the field of pyrroloquinoline quinone (PQQ) technologies. With a robust portfolio of 13 patents, Sakamoto's work focuses on enhancing the properties and manufacturing processes of PQQ-related compounds, showcasing his innovative spirit and commitment to advancing scientific research.

Latest Patents

Sakamoto's recent patents highlight his dedication to improving the functionalities of pyrroloquinoline quinone. One of his latest inventions involves a compound designed to enrich the red color of PQQ while maintaining its original functions. This invention includes a method for efficiently manufacturing the compound represented by the formulas (A) and (B), where R is selected from various alkyl and hydroxyalkyl groups.

Another significant patent involves the development of crystals of pyrroloquinoline quinone disodium and trisodium salts. These crystals demonstrate distinct peaks in powder X-ray diffractometry, indicating their unique structural properties, which could have substantial implications for various applications in research and industry.

Career Highlights

Throughout his career, Sakamoto has worked with esteemed organizations such as Mitsubishi Gas Chemical Company, Inc. and Akebono Research and Development Centre Ltd. His roles in these companies have allowed him to collaborate with leading experts and further his research in PQQ technologies.

Collaborations

Sakamoto's innovative journey has been enriched by collaborations with notable colleagues, including Takashi Kojima and Kazuto Ikemoto. These partnerships have fostered a collaborative environment that promotes the exchange of ideas and advancements in the field of chemical research.

Conclusion

Hitoshi Sakamoto stands out as a significant inventor in the realm of pyrroloquinoline quinone technologies. His 13 patents reflect his deep understanding of chemical compounds and their applications, while his collaborations underscore the importance of teamwork in driving innovation. Through his work, Sakamoto continues to contribute to scientific advancements that hold great promise for various industries.

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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