Location History:
- Fuchu, JP (1990 - 1995)
- Tokyo, JP (2016)
- Shinjuku-ku, JP (2011 - 2017)
Company Filing History:
12 out of 2,529 
1 out of 1,235 Years Active: 1990-2017
Title: Innovations of Eiichi Yajima
Introduction
Eiichi Yajima is a prominent inventor based in Shinjuku-ku, Japan. He has made significant contributions to the field of photochromic materials, holding a total of 12 patents. His work focuses on developing advanced optical technologies that enhance the functionality and performance of lenses.
Latest Patents
Yajima's latest patents include innovations such as a photochromic film and a photochromic lens comprising the same. The photochromic film features a photochromic dye and a resin component, achieving a nanoindentation hardness of equal to or greater than 800 nm on at least one of its surfaces. Additionally, he has developed a method for manufacturing photochromic lenses, which involves forming a photochromic film with specific hardness characteristics through a curing treatment. Another notable invention is a polarizing lens that includes a polarizing layer with a dichroic dye and a functional film, enhanced by a waterborne resin layer.
Career Highlights
Throughout his career, Yajima has worked with notable companies such as Hoya Corporation and Nissan Chemical Industries Limited. His experience in these organizations has allowed him to refine his expertise in optical materials and lens technology.
Collaborations
Yajima has collaborated with esteemed colleagues, including Yoshifumi Watanabe and Osamu Asai. These partnerships have contributed to the advancement of his innovative projects and patents.
Conclusion
Eiichi Yajima's contributions to the field of photochromic materials and lens technology are noteworthy. His innovative patents and collaborations reflect his commitment to advancing optical technologies.