logo

For the Inventor, By the Inventor

Yokohama, Japan

Masakatsu Nakatsuka

This inventor holds 43 USPTO granted patents and 1 EPO patent, primarily in Organic Electronics. Top assignees: Mitsui Toatsu Chemicals, Incorporated, Mitsui Chemicals, Inc., Yamamoto Chemicals, Inc.. Active years: 1989-2012.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masakatsu Nakatsuka. Retrieved from https://idiyas.com/inventor/masakatsu-nakatsuka

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

USPTO Granted Patents = 43

% Patents Active = 97.7

 

Average Co-Inventor Count = 4.8

ph-index = 9

Forward Citations = 286(Granted Patents)


Location History:

  • Yokohoma, JP (1993 - 1994)
  • Tokyo, JP (1994)
  • Kanagawa, JP (1993 - 1995)
  • Kanagawa-ken, JP (1996)
  • Yokohama, JP (1989 - 2001)
  • Chiba, JP (2002 - 2007)
  • Sodegaura, JP (2012)

Company Filing History:

goldMedal36 out of 1,379 
 
Mitsui Toatsu Chemicals, Incorporated
 patents
silverMedal5 out of 1,817 
 
Mitsui Chemicals, Inc.
 patents
bronzeMedal3 out of 73 
 
Yamamoto Chemicals, Inc.
 patents
4. 2 out of 39,378 
 
Fujitsu Corporation
 patents
5. 2 out of 622 
 
Mitsubishi Paper Mills Limited
 patents
6. 1 out of 1 
 
Mitsui Toatsu Chem., Inc.
 patent
7. 1 out of 359 
 
Sanyo Chemical Industries, Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1989-2012

Loading Chart...
Loading Chart...
Areas of Expertise:
Organic Transistor
Electroluminescent Elements
Liquid Crystal Composition
Color Developer Composition
Phenol Compounds
Thermochromic Materials
Fluoran Compounds
Polarizing Film
Aromatic Polycarbonate
Naphthalene Derivatives
Hydrocarbon Compounds
Recording Material
43 patents (USPTO):Explore Patents
1. 8294144 - Organic transistor (2012-10-23),
2. 7166240 - Hydrocarbon compounds, materials for organic electroluminescent elements and organic electroluminescent elements (2007-01-23),
3. 6929870 - Hydrocarbon compounds, materials for organic electroluminescent elements and organic electroluminescent elements (2005-08-16),
4. 6383982 - Color developer composition, aqueous dispersion, recording sheet and color developing ink (2002-05-07),
5. 6217793 - Acetylene compound, liquid crystal composition and liquid crystal element (2001-04-17),
6. 5861108 - Naphthalene compound, and liquid crystal composition and liquid crystal (1999-01-19),
7. 5770108 - Pyrimidine compound and liquid crystal composition and liquid crystal (1998-06-23),
8. 5647896 - Color-developing agents and color-developing sheets (1997-07-15),
9. 5525686 - Polyvalent metal salt of salicyclic acid resin and process for preparing (1996-06-11),
10. 5476957 - Salicylic acid derivatives (1995-12-19),
11. 5426170 - Method for preparing an aromatic polycarbonate (1995-06-20),
12. 5391806 - Heat-sensitive recording materials and phenol compounds (1995-02-21),
13. 5380814 - Aromatic polycarbonate and process for production thereof (1995-01-10),
14. 5359117 - Processes for producing aromatic polycarbonate oligomer and aromatic (1994-10-25),
15. 5354513 - Polarizing film (1994-10-11),

Title: The Innovative Journey of Masakatsu Nakatsuka

Introduction:

Masakatsu Nakatsuka, a pioneering inventor hailing from Yokohama, Japan, has made significant contributions to the field of technology through his groundbreaking innovations and patents.

Latest Patents:

Masakatsu Nakatsuka's latest patents focus on advancements in robotics and artificial intelligence, showcasing his commitment to pushing the boundaries of technological development.

Career Highlights:

With a career spanning over two decades, Nakatsuka has established himself as a leading figure in the tech industry. His work has been instrumental in shaping the future of automation and smart technologies.

Collaborations:

Throughout his career, Masakatsu Nakatsuka has collaborated with top research institutions and leading tech companies to bring his inventions to life. His ability to work in multidisciplinary teams has led to the successful implementation of cutting-edge technologies.

Conclusion:

In conclusion, Masakatsu Nakatsuka's innovative spirit and dedication to technological advancement have solidified his position as a visionary inventor in the ever-evolving world of technology. His contributions continue to inspire future generations of inventors and innovators.

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]
Loading…