Introduction: Donald J Ratkowski is a notable inventor based in Mesa, AZ (US), recognized for his contributions to the field of optical materials and contact lenses. He holds a total of 11 patents, showcasing his innovative spirit and dedication to advancing technology in his area of expertise.

Latest Patents: Among his latest patents is a method for producing contact lenses and materials, which involves creating an interpenetrating network copolymer. This method includes the preparation of first and second mixtures of polymerizable vinyl monomers, where the polymerization of the first mixture is interrupted at a relative viscosity of about 1.05 to 10. By admixing the partially polymerized first mixture with the second mixture, a casting solution is created, which can then be polymerized in heat to form solid lens material.

Career Highlights: Throughout his career, Donald has worked with prominent companies in the optical industry, including Paragon Optical, Inc. and Sola USA, Inc. His work has significantly impacted the development of advanced optical products.

Collaborations: Donald has collaborated with esteemed colleagues such as William J Burke and Lisa A Folk, contributing to various projects that have furthered innovation in optical technologies.

Conclusion: Donald J Ratkowski's work exemplifies the spirit of innovation in the field of contact lenses and optical materials. His

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