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Patent applications and USPTO patent grants for Turpen; Joseph David.The latest application filed is for "method of preparing a photochromic optical article using an organic solvent pretreatment and photochromic coating".
Patent | Date |
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Method of preparing a photochromic optical article using an organic solvent pretreatment and photochromic coating Grant 10,281,628 - Koenig, II , et al. | 2019-05-07 |
Photochromic optical article having allophanate protective coating and process for making same Grant 9,690,021 - Turpen , et al. June 27, 2 | 2017-06-27 |
Method Of Preparing A Photochromic Optical Article Using An Organic Solvent Pretreatment And Photochromic Coating App 20160245967 - Koenig, II; Jerry L. ;   et al. | 2016-08-25 |
Photochromic Optical Article Having Allophanate Protective Coating And Process For Making Same App 20160238758 - Turpen; Joseph David ;   et al. | 2016-08-18 |
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