This inventor holds 42 USPTO granted patents and 5 published patent applications and 10 EPO patents, primarily in Optical Devices. Top assignees: Hitachi, Ltd., Dexerials Corporation, Adin Research, Inc.. Active years: 1980-2025.
Location History:
- Minato, JP (1987)
- Hitachi, JP (1980 - 1993)
- Ibaraki-ken, JP (2003)
- Mito, JP (2001 - 2013)
- Tsuchiura, JP (2007 - 2013)
- Tokyo, JP (1987 - 2022)
- Shinagawa-ku, JP (2018 - 2022)
- Miyagi, JP (2016 - 2023)
Company Filing History:
23 out of 42,719 
14 out of 716 
1 out of 4 
Years Active: 1980-2025
Areas of Expertise:
Title: **Innovative Contributions of Koji Sasaki**
Introduction
Koji Sasaki, based in Tokyo, Japan, has made significant strides in the field of optical technology. With an impressive portfolio of 40 patents, Sasaki's innovations stand out for their ingenuity and practical application in various technologies.
Latest Patents
Sasaki's latest patents showcase his commitment to advancing optical materials. One of his notable inventions is a **depolarizing plate** that boasts a superior degree of depolarization compared to conventional options. This depolarizing plate incorporates a light-transmitting substrate featuring a surface layer with a unique fine pattern comprised of randomly disposed curved lines. This innovation allows for enhanced structural birefringence, improving light quality.
In addition, he has developed an innovative **optical body**, along with methods for manufacturing it. This optical body is designed for use in **light-emitting apparatus** and **display apparatus** specifically for amusement equipment. Notably, the invention improves emitted luminance and transparency and includes a base material with a specialized light extraction section that features a concave-convex structure designed for optimal light transmittance.
Career Highlights
Sasaki has held positions at prestigious organizations such as Hitachi, Ltd. and Dexerials Corporation. His work at these companies has been pivotal in integrating cutting-edge technologies into practical applications, solidifying his reputation as a leading inventor in optical systems.
Collaborations
Throughout his career, Sasaki has worked alongside talented individuals, including coworkers such as Akio Takada and Nobuyuki Koike. These collaborations have enabled the cross-pollination of ideas, fostering an environment ripe for innovation.
Conclusion
Koji Sasaki's contributions to optical technology through his numerous patents reflect his expertise and dedication to progress in the field. His work continues to influence the industry and inspire future innovations.