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. 10, 2005
Filed:
Mar. 30, 1998
Samuel J. Tremont, Manchester, MO (US);
Samuel J. Tremont, Manchester, MO (US);
Monsanto Company, St. Louis, MO (US);
Abstract
This invention provides a method of preparing a polymeric delivery system for active ingredients. The delivery system is formed either by attaching the active ingredient to a linker through a hydrolyzable covalent bond, then forming a covalent bond between the linker and a portion of the subunits of a cross-linked polymer, or by attaching a linker to a portion of the subunits of a cross-linked polymer, then attaching the active ingredient to the polymer-linker combination through a hydrolyzable covalent bond. The invention also provides a delivery system comprising an active ingredient covalently bonded through a hydrolyzale covalent bond to a linker, which is in turn covalently bonded to a portion of subunits of a cross-linked polymer.