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Optical Products > CR-39 > The History of CR-39™
The History of CR-39™
| PPG's patented CR-39™ monomer today represents the largest category of lenses sold worldwide. The history of CR-39 monomer and the emergence of plastic lenses is told in the following excerpts from PPG's commemorative booklet, "More Than Meets the Eye: The Stories Behind the Development of Plastic Lenses". The booklet was written by Joseph L. Burneni and published in 1997 during our 50th anniversary celebration of CR-39 monomer. |
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CR-39 (Reg. U.S.Pat. & Tm. Off.) is a trademark of PPG Industries, Inc. | |
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