This inventor holds 2 USPTO granted patents. Top assignees: Essilor International (Compagnie Generale D'optique), Transitions Optical, Inc.. Active years: 2012-2013.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
2 out of 719 
2 out of 220 
Years Active: 2012-2013
Title: Innovations of Leo Charles Collett
Introduction
Leo Charles Collett is a notable inventor based in Dunedin, Florida. He has made significant contributions to the field of optical coatings, particularly in the development of photochromic materials. With a total of 2 patents, Collett's work has advanced the performance and durability of photochromic lenses.
Latest Patents
Collett's latest patents include a photochromic coating that exhibits improved performance and reduced yellowness. This innovative acrylate-based optical coating composition contains a blend of monomers, a metal salt, a Hindered Amine Light Stabilizer (HALS), an antioxidant, an initiator, and a photochromic dye. The initiator is designed to operate below a predetermined energy level, ensuring that the curing process is controlled to prevent reactions that could increase yellowness. This composition is particularly well-suited for application to lenses, resulting in a coating that boasts high adhesion and abrasion-resistant properties. Additionally, he has developed a photochromic segmented bifocal lens that demonstrates low photochromic fatigue and favorable transmission values.
Another significant patent focuses on a photochromic coating that showcases excellent darkening and fatigue properties. This formulation is created from a blend of at least two different types of monomers, utilizing a metal salt catalyst and an initiator. The combination of an antioxidant and a hindered amine light stabilizer enhances the coating's performance, making it suitable for in-mold coating processes.
Career Highlights
Throughout his career, Collett has worked with prominent companies in the optical industry, including Essilor International and Transitions Optical, Inc. His expertise in photochromic technology has positioned him as a key player in the development of advanced optical solutions.
Collaborations
Collett has collaborated with various professionals in the field, including Ronald A. Berzon, further enhancing the innovation and effectiveness of his projects.
Conclusion
Leo Charles Collett's contributions to the field of optical coatings have significantly impacted the performance of photochromic lenses. His innovative patents and collaborations reflect his dedication to advancing technology in this area.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile