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COLCHON CARDENAS RAFAEL
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COLCHON CARDENAS RAFAEL
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Application filed by COLCHON CARDENAS RAFAELfiledCriticalCOLCHON CARDENAS RAFAEL
Priority to ES1984278518UpriorityCriticalpatent/ES278518Y/en
Publication of ES278518UpublicationCriticalpatent/ES278518U/en
Application grantedgrantedCritical
Publication of ES278518YpublicationCriticalpatent/ES278518Y/en
Check valve, characterized by being constituted by an external circular structure provided with an interior emptying, in whose central part and concentric with respect thereto, a solid cylindrical element of equal height and joined to it by regularly arranged walls appears, of which lower base emerges a projection of inverted frustoconical tendency, also foreseeing the existence of a disc of flexible material placed embracing said projection and making a stop against the lower base of the central element and a block of similarly flexible material, which retains said disc and which it is also placed under pressure, around said projection. (Machine-translation by Google Translate, not legally binding)
PROCEDURE FOR PREPARING MICROCAPSULES WITH CONTROLLED RELEASE OF ACTIVE SUBSTANCES, CONTAINING PEPTIDES, REGULATORS AND A BIOLOGICALLY DEGRADABLE SUPPORT MATERIAL.