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. 03, 2023
Filed:
Aug. 02, 2022
Applicant:
Cytodigm, Inc., Natick, MA (US);
Inventor:
Bin Wu, Lexington, MA (US);
Assignee:
Cytodigm, Inc., Natick, MA (US);
Primary Examiner:
Int. Cl.
CPC ...
A61K 9/14 (2006.01); A61K 9/19 (2006.01); A61K 9/51 (2006.01); A61K 47/61 (2017.01); A61K 47/59 (2017.01); A61K 47/69 (2017.01); A61K 47/58 (2017.01); A61K 9/16 (2006.01); B82Y 5/00 (2011.01);
U.S. Cl.
CPC ...
A61K 9/146 (2013.01); A61K 9/1635 (2013.01); A61K 9/1647 (2013.01); A61K 9/1652 (2013.01); A61K 9/1682 (2013.01); A61K 9/19 (2013.01); A61K 9/5153 (2013.01); A61K 9/5161 (2013.01); A61K 9/5192 (2013.01); A61K 47/58 (2017.08); A61K 47/593 (2017.08); A61K 47/61 (2017.08); A61K 47/6931 (2017.08); A61K 47/6933 (2017.08); A61K 47/6937 (2017.08); B82Y 5/00 (2013.01); Y02A 50/30 (2018.01);
Abstract
This invention provides methods for producing a polymer particle which contains unusually high negative charges on the surface of the particle. Preferably, the polymer is pharmaceutically acceptable. The negative charges can be conferred by chemical groups such as carboxyl, sulfonate, nitrate, fluorate, chloride, iodide, persulfate, and many others, with carboxyl group being preferred. The invention also provides polymer particle produced by the methods of the invention.