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Patent applications and USPTO patent grants for Piacenti; Franco.The latest application filed is for "process for the protection of stone materials, marble, bricks and concrete from atmospheric agents and pollutants and for the protection of the surface of such materials from the decay caused by mural writings with paints, and the like".
Patent | Date |
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Process for the protection of stone materials, marble, bricks and concrete from atmospheric agents and pollutants and for the protection of the surface of such materials from the decay caused by mural writings with paints, and the like Grant 4,902,538 - Piacenti , et al. February 20, 1 | 1990-02-20 |
Process for protecting and consolidating stone materials Grant 4,764,431 - Piacenti , et al. August 16, 1 | 1988-08-16 |
Use of perfluoropolyether derivatives for protecting stone materials from atmospheric agents Grant 4,746,550 - Strepparola , et al. May 24, 1 | 1988-05-24 |
Method for protecting stone materials from atmospheric agents by means of perfluoropolyether derivatives Grant 4,745,009 - Piacenti , et al. May 17, 1 | 1988-05-17 |
Protecting materials subject to degradation by atmospheric and polluting agents by means of perfluoropolyethers Grant 4,499,146 - Piacenti , et al. February 12, 1 | 1985-02-12 |
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