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:
May. 26, 2020
Filed:
Sep. 22, 2017
Applicant:
Elc Management Llc, Melville, NY (US);
Inventor:
Wilson A. Lee, Hauppauge, NY (US);
Assignee:
ELC Management LLC, Melville, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01J 13/04 (2006.01); B01J 13/22 (2006.01); A61K 8/11 (2006.01); A61K 8/06 (2006.01); A61K 8/02 (2006.01); A61Q 13/00 (2006.01); A61Q 19/00 (2006.01); A61K 8/894 (2006.01);
U.S. Cl.
CPC ...
B01J 13/04 (2013.01); A61K 8/0279 (2013.01); A61K 8/062 (2013.01); A61K 8/064 (2013.01); A61K 8/068 (2013.01); A61K 8/11 (2013.01); A61K 8/894 (2013.01); A61Q 13/00 (2013.01); A61Q 19/00 (2013.01); B01J 13/043 (2013.01); B01J 13/22 (2013.01); A61K 2800/412 (2013.01); A61K 2800/56 (2013.01); A61K 2800/624 (2013.01);
Abstract
A delayed release delivery system comprises a hydrophilic core particle having surface pores and containing a liquid. The particle is encapsulated in a polymer having a hydrophobic backbone and hydrophilic pendant groups. At least some of the surface pores adjacent the hydrophilic pendant groups are blocked in the presence of water and unblocked in the absence of water. The treated particle contains liquid in a weight ratio of the liquid to the porous core particle of at least 400:1.