Enter inventor name

Kei Sakamoto

This inventor holds 68 USPTO granted patents and 21 published patent applications and 19 EPO patents, primarily in Optical Materials (CPC class C08F). Top assignees: Zeon Corporation, Kabushiki Kaisha Toshiba, Nippon Zeon Company, Ltd.. Active years: 1998-2024.

USPTO Granted Patents = 68 (Patent Applications = 21)

% Patents Active = 67.6

EPO Patents = 19 (Patent Applications = 29)

Average Co-Inventor Count = 2.5

ph-index = 8

Forward Citations = 243(Granted Patents)

Forward Citations (Not Self Cited) = 193(Dec 10, 2025)

Inventors with similar research interests:

Location History:

Kanagawa, JP (2001)
Kawasaki, JP (1998 - 2006)
Hamura, JP (2007 - 2012)
Nagoya, JP (2013 - 2018)
Yokkaichi, JP (2019)
Aichi, JP (2019)
Chuo, JP (2021)
Tokyo, JP (2009 - 2024)

Company Filing History:

Kabushiki Kaisha Toshiba

patents

4 out of 598

Nippon Zeon Company, Ltd.

patents

4. 4 out of 2,955

Toshiba Memory Corporation

Toshiba Digital Solutions Corporation

8. 1 out of 834,411

Other

patents

where one patent can have more than one assignee

Years Active: 1998-2024

Loading Chart...

Areas of Expertise:

Optically Anisotropic Body

Polymerizable Compound

Polymerizable Composition

Display Device

Polarizing Plate

Semiconductor Memory Device

Liquid Crystal Material

Anti-Reflection Film

Vehicle-Mounted Gateway

Binder Composition

Electrolyte Solution

Copolymers

68 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12038650 - Multilayer phase difference plate, polarizing plate, and image display device (2024-07-16),

2. 11492552 - Polymerizable liquid crystal material, polymerizable liquid crystal composition, polymer, optical film, optically anisotropic body, polarizing plate, anti-reflection film, display device, and method of producing polymerizable liquid crystal composition (2022-11-08),

3. 11203716 - Compound, polymerizable compound, mixture, polymerizable liquid crystal composition, polymer, optical film, optically anisotropic product, polarizing plate, flat panel display device, organic electroluminescence display device, and anti-reflection film (2021-12-21),

4. 11091452 - Polymerizable compound, polymerizable composition, polymer, optically anisotropic body, and method for producing polymerizable compound (2021-08-17),

5. 10954443 - Polymerizable compound, polymerizable composition, polymer, and optically anisotropic product (2021-03-23),

6. 10945199 - Vehicle-mounted gateway apparatus and vehicle mounted gateway system (2021-03-09),

7. 10934246 - Mixture of polymerizable compound and method of producing the same (2021-03-02),

8. 10730844 - Polymerizable compound, polymerizable composition, polymer, and optically anisotropic product (2020-08-04),

9. 10647794 - Polymerizable compound, polymerizable composition, polymer, and optically anisotropic material (2020-05-12),

10. 10633323 - Method of producing acid halide solution and method of producing monoester compound (2020-04-28),

11. 10633319 - Method of producing solution composition containing monoetherified product, solution composition, and method of producing polymerizable compound (2020-04-28),

12. 10577306 - Mixture of polymerizable compound and method of producing the same (2020-03-03),

13. 10538477 - Production intermediate of polymerizable compound, production method for same, composition, and stabilization method (2020-01-21),

14. 10508072 - Method for producing acid halide solution, mixed solution, and method for producing monoester compound (2019-12-17),

15. 10487065 - Polymerizable compound, polymerizable composition, polymer, optically anisotropic body, and method for producing polymerizable compound (2019-11-26),

As a specialized AI assistant in the sphere of innovations, inventions, inventors, patent attorneys, assignees, and patents, I'll create an article about inventor Kei Sakamoto based on the provided data.

Title: The Innovative Work of Kei Sakamoto in Tokyo, Japan

Introduction: Kei Sakamoto, a prolific inventor based in Tokyo, Japan, has made significant contributions to the field of polymer materials and optical technologies over the years.

Latest Patents: Sakamoto's latest patents include a range of groundbreaking innovations such as polymerizable liquid crystal materials, polymer compositions, optical films, polarizing plates, anti-reflection films, and display devices. One notable patent involves a novel polymerizable liquid crystal material designed to enhance optical performance.

Career Highlights: With an impressive portfolio of 67 patents, Kei Sakamoto has established himself as a leading figure in the industry. He has worked with renowned companies such as Zeon Corporation and Toshiba, where his expertise has been instrumental in the development of cutting-edge technologies.

Collaborations: Throughout his career, Sakamoto has collaborated closely with esteemed colleagues such as Kumi Okuyama and Satoshi Kiriki. Together, they have pushed the boundaries of innovation and set new standards in the field of polymer science and display technologies.

Conclusion: Kei Sakamoto's innovative spirit and dedication to pushing the boundaries of technology have earned him a well-deserved reputation as a pioneering inventor in Tokyo, Japan. His groundbreaking patents and collaborative efforts continue to shape the future of materials science and optical engineering.

Profile summary based on public USPTO records.

Please report any incorrect information to [email protected]