Company Filing History:
Years Active: 2002
Title: **The Innovations of Tohru Shirafuji: A Pioneer in Contact Lens Technology**
Introduction
Tohru Shirafuji, an innovative inventor based in Tokyo, Japan, has made significant contributions to the field of optometry through his groundbreaking work on gas-permeable hard contact lenses. With one patented invention under his belt, he has demonstrated a keen ability to enhance the comfort and durability of contact lens technology.
Latest Patents
Shirafuji holds a patent for a unique method of producing gas-permeable hard contact lenses. This innovative production process involves hot press-stretching a crosslinked gas-permeable hard contact lens material, followed by precise machining of the press-stretched material. The resulting contact lenses are characterized by a compression ratio of 5 to 50%, as well as a compression-flexure fracture strength ranging from 300 to 1,500 g. This invention leads to the efficient production of lenses that are free of optical strains, possess excellent transparency, and exhibit minimal internal stress, thus providing a comfortable wearing experience and improved durability.
Career Highlights
Tohru Shirafuji is currently associated with Hoya Healthcare Corporation, where he continues to push the boundaries of contact lens technology. His career has been marked by a commitment to enhancing visual comfort and innovation in eye care products, making him a respected figure in the industry.
Collaborations
Throughout his career, Shirafuji has collaborated with notable colleagues, including Kikuo Mitomo and Hideo Suda. Together, they work on advancing the development of optical products, sharing insights and expertise that foster innovation.
Conclusion
Tohru Shirafuji's contributions to the field of contact lens technology exemplify the spirit of innovation. His patented method for producing gas-permeable hard contact lenses showcases his dedication to creating comfortable and durable optical solutions. With a bright future ahead, Shirafuji continues to be an influential force in the advancement of eye care technologies.