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:
Nov. 06, 2001
Filed:
May. 01, 1998
Applicant:
Inventors:
Adam S. Cantor, St. Paul, MN (US);
Hye-ok Choi, Woodbury, MN (US);
Joaquin Delgado, St. Paul, MN (US);
Chan U. Ko, Arcadia, MN (US);
Thu-Van Tran, Maplewood, MN (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61F 1/302 ; A61F 1/300 ; A61L 1/516 ; A61K 9/70 ; A61K 9/14 ;
U.S. Cl.
CPC ...
A61F 1/302 ; A61F 1/300 ; A61L 1/516 ; A61K 9/70 ; A61K 9/14 ;
Abstract
Transdermal drug delivery compositions comprising pressure sensitive adhesive microspheres that contain a softening agent and/or a drug. Typically the microspheres contain at least 10 wt-% of a softening agent. The drug and/or softening agent can be incorporated into the microspheres during or after their formation.