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For the Inventor, By the Inventor

Ibaraki, Japan

Akiko Shimizu

USPTO Granted Patents = 13

Average Co-Inventor Count = 2.6

ph-index = 8

Forward Citations = 141(Granted Patents)


Location History:

  • Osaka, JP (1994)
  • Osaka-fu, JP (1999)
  • Ibaraki, JP (1995 - 2001)
  • Niihama, JP (2007)

Company Filing History:

goldMedal13 out of 6,892 
 
Sumitomo Chemical Company, Limited
 patents

Years Active: 1994-2007

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13 patents (USPTO):Explore Patents
1. 7247380 - Laminated phase retarder film and a liquid crystal display using the same (2007-07-24),
2. 6208396 - Normally white mode twisted nematic liquid crystal display device having improved viewing angle characteristics (2001-03-27),
3. 6097460 - Phase retarder film containing TiO.sub.2 (2000-08-01),
4. 6060183 - Phase retarder and liquid crystal display device using the same (2000-05-09),
5. 5926313 - Phase retarder film (1999-07-20),
6. 5888634 - Phase retarder film (1999-03-30),
7. 5886760 - Microlens-array, production method thereof, and liquid crystal display (1999-03-23),
8. 5693253 - Optically anisotropic material, process for producing it, and (1997-12-02),
9. 5688436 - Optically anisotropic material, process for producing it, and (1997-11-18),
10. 5658505 - Process for making a phase retarder film (1997-08-19),
11. 5631755 - Layered inorganic compound-containing phase retarder (1997-05-20),
12. 5430566 - Liquid crystal device with phase retarder having layered inorganic (1995-07-04),
13. 5285303 - Phase retarder and process for producing the same (1994-02-08),

Title: Innovations by Akiko Shimizu: A Trailblazer in Liquid Crystal Technology

Introduction

Akiko Shimizu, an accomplished inventor based in Ibaraki, Japan, has made significant contributions to the field of liquid crystal technology. With a remarkable portfolio of 13 patents, she is recognized for her innovative approaches to enhancing optical properties in display technologies.

Latest Patents

Among her latest inventions are the laminated phase retarder film and a liquid crystal display utilizing this film. The laminated phase retarder film aims to provide superior evenness and exceptional biaxial optical properties, enabling a wide range of optical adjustments. This invention comprises a transparent resin film substrate with a coated layer that has specific refractive-index anisotropy, ensuring an in-plane retardation value of not less than 20 nm.

Furthermore, her normally white mode twisted nematic liquid crystal display device stands out for its improved viewing angle characteristics, display contrast, and gray scale inversion. This advanced display includes a twisted nematic liquid crystal cell paired with optical compensation layers and light polarizing films arranged in a strategic order to deliver optimal performance.

Career Highlights

Akiko Shimizu is employed at Sumitomo Chemical Company, Limited, where she continues to drive technological advancements. Her career is marked by her dedication to innovation and her impactful contributions to liquid crystal technologies.

Collaborations

Throughout her tenure, Akiko has collaborated with notable colleagues, including Koji Higashi and Takahiro Hishinuma. These partnerships have played a vital role in her research and development efforts, leading to groundbreaking advancements in her field.

Conclusion

Akiko Shimizu stands out as a pioneering inventor in the liquid crystal technology space. Her work not only showcases her technical expertise but also reflects her commitment to advancing display technologies. Through her patents and collaborations, she continues to inspire future innovations in this dynamic field.

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