Location History:
- Kaisei, JP (1986)
- Kanagawa, JP (1985 - 1989)
- All of Kanagawa, JP (1989)
- Oumiya, JP (1999)
- Saitama-ken, JP (2004 - 2005)
- Asaka, JP (2001 - 2010)
- Kumagaya, JP (2013)
- Saitama, JP (2003 - 2014)
- Tsukuba, JP (2016)
- Ibaraki, JP (1992 - 2020)
- Tokyo, JP (1994 - 2020)
Company Filing History:
16 out of 16,458 
9 out of 16,115 
7 out of 2,333 
Years Active: 1985-2025
Title: **Koji Ichikawa: A Pioneer in Liquid Crystal Technology**
Introduction
Koji Ichikawa, a remarkable inventor based in Asaka, Japan, holds an impressive portfolio of 37 patents. His contributions to the field of liquid crystal technology and anti-counterfeiting measures have positioned him as a significant figure in the industry. With a career spanning several reputable companies, Ichikawa's innovations continue to impact various technological advancements.
Latest Patents
Among his noteworthy inventions, two recent patents stand out:
1. **Liquid Crystal Laminate and Method for Manufacturing a Liquid Crystal Laminate**: This patent describes a liquid crystal laminate that includes a substrate with a first diffraction surface and a second base material surface, characterized by optical transparency. The invention integrates a metal layer on part of the first diffraction layer, an adhesion layer made of photocured resin on the second base material layer, and a liquid crystal layer positioned on the adhesion layer's surface opposite to the substrate contact area.
2. **Anti-Counterfeiting Medium and Method for Fabricating Anti-Counterfeiting Medium**: This invention focuses on an anti-counterfeiting medium comprising a recording medium and a polarizer layer. The polarizer layer features a low extinction-ratio area that creates an image portion with a distinct extinction ratio compared to other regions. Additionally, the recording medium showcases an image portion with physical traits that deviate from the rest of the medium.
Career Highlights
Koji Ichikawa's professional journey includes crucial roles in esteemed organizations such as Fuji Photo Film Company, Limited and Fujifilm Corporation. His experience at such leading companies has greatly influenced his development of innovative technologies that drive the industry forward.
Collaborations
Throughout his career, Ichikawa has collaborated with notable coworkers, including Koichi Sakamoto and Masahiko Sugimoto. These collaborations highlight the synergy and creativity fostered in his work environment, leading to pioneering inventions.
Conclusion
Koji Ichikawa remains an influential inventor with a strong legacy in the realms of liquid crystal technology and anti-counterfeiting solutions. His extensive patent portfolio and collaborations reflect his commitment to innovation and technological progress. As he continues to develop cutting-edge solutions, the impact of his work will likely resonate within the tech industry for years to come.