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. 08, 2009
Filed:
Jul. 07, 2000
Susanne Kessler, Ergolding, DE;
Sean Lee, Karlsruhe, DE;
Susanne Kessler, Ergolding, DE;
Sean Lee, Karlsruhe, DE;
Schott AG, Mainz, DE;
Abstract
The method of preserving a perishable cosmetic and/or pharmaceutical preparation includes adding bioactive glass particles to the preparation, preferably in amounts up to 10 percent by weight. The bioactive glass particles preferably have particle sizes (d) less than or equal to 10 μm and contain from 40 to 60 wt. % SiO, 10 to 30 wt. % CaO, 10 to 35 wt. % NaO, 2 to 8 wt. % PO, 0 to 25 wt. % CaF, 0 to 10 wt. % BO, 0 to 8 wt. % KO and/or 0 to 5 wt. % MgO. A liquid cosmetic preparation with alcohol content insufficient for preservation is preserved in an inconspicuous manner by adding bioactive glass particles with particle sizes less than or equal to 10 μm and with a refractive index close enough to that of the liquid cosmetic preparation so that bioactive glass particles are substantially invisible to an observer.