The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 31, 1996
Filed:
Jun. 24, 1994
Alberto Vallet Mas, Barcelona, ES;
Francesc X Gimenez Guasch, Premia de Mar, ES;
Laboratorios Cusi, S.A., El Masnou, ES;
Abstract
A dispenser for pharmaceutical solutions which includes membranes which are placed in a dropper of the dispenser and are used to achieve the flow of essentially all the active product and the retention of essentially all the preservative during pharmacological treatment. The membrane is coupled between two cylinder units on parts of the dropper, which remain in a relatively movable position, owing to the existence of a certain play between the cylinder units; or the cylinder units may be in a relatively fixed position, owing to the lack of such play. The cylinder unit may also be in a fixed position but with a membrane treated adequately so as to have a small area or 'stain' that permits the flow of air.