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:
Mar. 21, 2017
Filed:
Apr. 17, 2013
J. Michael Ramstack, Lunenberg, MA (US);
Thomas C. Crawford, Essex, CT (US);
J. Michael Ramstack, Lunenberg, MA (US);
Thomas C. Crawford, Essex, CT (US);
CERULEAN PHARMA INC., Waltham, MA (US);
Abstract
Processes for precipitating a polymer from a polymer-containing fluid are disclosed, which include providing a vessel housing a medium that provides one or more precipitation surfaces. A polymer-containing fluid, e.g., a polymer solution, dispersion or mixed solution/dispersion, and an anti-solvent can be introduced into the vessel so as to cause precipitation of at least a portion of the polymer on at least one of the precipitation surfaces. In some embodiments, the polymer contains one or more cyclic oligosaccharide moieties, such as one or more cyclodextrin moieties (e.g., α-cyclodextrin, β-cyclodextrin, and γ-cyclodextrin). The polymer can be any of a linear or branched polymer. The polymer can be any of polycation, a polyanion, or a non-ionic polymer. Also disclosed herein are precipitation surfaces with polymer precipitated thereon.