Coating processes – With pretreatment of the base – Etching – swelling – or dissolving out part of the base
Reexamination Certificate
2006-04-04
2006-04-04
Cameron, Erma (Department: 1762)
Coating processes
With pretreatment of the base
Etching, swelling, or dissolving out part of the base
C427S407100, C427S393500
Reexamination Certificate
active
07022379
ABSTRACT:
A method of forming a coating of polyionic materials in a layer-by-layer-like manner onto a polymeric material is provided. A polymeric material, such as a contact lens, can be dipped once into a solution of polyionic materials such that layers of polyionic material can be formed thereon. A single dip solution of the present invention typically contains a polyanionic material and a polycationic material in a non-stoichiometric amount and maintained within a certain pH range.
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Lally John Martin
Qiu Yongxing
Rubner Michael
Winterton Lynn Cook
Cameron Erma
Novartis AG
Zhou Jian S.
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