In one embodiment, the sensing composition precursor comprises a dispersed aqueous liquid including a sensing component dissolved therein,...http://www.google.es/patents/US5284775?utm_source=gb-gplus-sharePatente US5284775 - Blends of sensing component, polymer precursor amd hydroxy-alkylcellulose dispersants; detecting carbon dioxIde in blood B???squeda avanzada de patentes N???mero de publicaci?