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Plastomedical Sciences, Inc. Patents |
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Assignee: Plastomedical Sciences, Inc.
Address: Briarcliff Manor, NY
No. of patents: 6
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 4426492 |
Disposable, hydrogel soft contact lenses |
January 17, 1984 |
| Stable three dimensional hydrogels which absorb water, but are insoluble in water, and are particularly useful for the making of soft contact lenses, are prepared by reacting a water insoluble polyvinyl resin which contains reactive hydroxyl groups in its polymer chain, with a di- or pol |
| 4163092 |
Cationic hydrogels based on hydroxyalkyl acrylates and methacrylates |
July 31, 1979 |
| Novel cationic hydrogels, containing basic (cationic) groups in their molecular structure, and processes for their preparation are described. These novel hydrogels are three-dimensional polymer networks, having good water permeability and mechanical properties, and are obtained by si |
| 4071508 |
Anionic hydrogels based on hydroxyalkyl acrylates and methacrylates |
January 31, 1978 |
| Novel anionic hydrogels, containing acidic groups in their molecular structure, and processes for their preparation are described. These novel hydrogels are stable three-dimensional polymer networks, having good water permeability and mechanical properties, and are obtained by simultaneo |
| 4060678 |
Cationic hydrogels based on hydroxyalkyl acrylates and methacrylates |
November 29, 1977 |
| Novel cationic hydrogels, containing basic (cationic) groups in their molecular structure, and processes for their preparation are described. These novel hydrogels are three-dimensional polymer networks, having good water permeability and mechanical properties, and are obtained by si |
| 4058491 |
Cationic hydrogels based on heterocyclic N-vinyl monomers |
November 15, 1977 |
| Novel cationic hydrogels, containing basic (cationic) groups in their molecular structure, and processes for their preparation are described. These novel hydrogels are stable, three-dimensional polymer networks, having good water permeability and mechanical properties. They are obtai |
| 4036788 |
Anionic hydrogels based on heterocyclic N-vinyl monomers |
July 19, 1977 |
| Novel anionic hydrogels, containing acidic groups, and their preparation are described. These novel hydrogels are stable, three-dimensional polymer networks, having good water permeability and mechanical properties. They are obtained by simultaneous polymerization and cross-linking, in t |
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