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:
Oct. 13, 2015
Filed:
Dec. 21, 2011
Celestino Ronchi, Milan, IT;
Giancarlo Ceschel, Milan, IT;
Celestino Ronchi, Milan, IT;
Giancarlo Ceschel, Milan, IT;
CHIESI FARMACEUTICI S.p.A., Parma, IT;
Abstract
Process for preparing sterile suspensions for inhalation comprising an active ingredient insoluble in water and wherein at least 80% of the particles of said active ingredient have a diameter between 3 and 5 μm, comprising the following stages: dissolving the active ingredient in the minimum quantity of an alcoholic solvent, optionally in the presence of a polyol and adding at least one surfactant, filtering the solution obtained in the previous stage through a sterilizing filter, adding the solution from stage (b) to sterile water under sonication to directly obtain a suspension wherein the particles have a reduced diameter.