Ian M Threlfall

Title: Ian M Threlfall: Innovator in Photochromic Technology

Introduction

Ian M Threlfall is a notable inventor based in Wigan, GB. He has made significant contributions to the field of synthetic plastics, particularly in the development of photochromic articles. His innovative approach has led to advancements in the manufacturing processes of ophthalmic lenses.

Latest Patents

Threlfall holds a patent for a "Process for manufacturing photochromic articles." This patent describes a direct casting process for creating shaped synthetic plastic articles, such as ophthalmic lenses, with photochromic properties. The process involves incorporating a photochromic spiro-oxazine compound into a mixture of a highly reactive polyfunctional monomer and a minimal amount of a polymerization catalyst. The composition is then cured in a mold to form the final product.

Career Highlights

Ian M Threlfall is associated with Pilkington Brothers P.L.C., a company known for its expertise in glass and glazing solutions. His work at Pilkington has allowed him to focus on innovative manufacturing techniques that enhance the functionality of plastic articles.

Collaborations

Threlfall has collaborated with William Ramsey Maltman, contributing to the development of advanced materials and processes in their field.

Conclusion

Ian M Threlfall's contributions to photochromic technology exemplify the impact of innovation in the manufacturing sector. His work continues to influence the development of synthetic plastic articles, showcasing the importance of research and collaboration in driving advancements.