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Details for Patent: 5,599,552

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Summary for Patent: 5,599,552

Title: Biodegradable polymer composition
Abstract:The invention is directed to a composition composed of a thermoplastic or thermosetting polymer which is capable of forming a biodegradable and/or bioerodible microporous, solid or gelatinous polymer matrix. The matrix is useful as an implant in animals for enhancing regeneration of cells and tissue, such as bone and nerve cells, or for delivery of biologically-active substances to tissue or organs. The composition is administered to an implant site as a liquid. The invention also includes a method of preventing and treating disorders and diseases, such as bone or nerve growth disorders, or of altering body functions such as birth control, using the compositions and implants of the invention.
Inventor(s): Dunn; Richard L. (Fort Collins, CO), Tipton; Arthur J. (Fort Collins, CO), Southard; George L. (Fort Collins, CO), Rogers; Jack A. (Fort Collins, CO)
Assignee: Atrix Laboratories, Inc. (Fort Collins, CO)
Application Number:08/249,630
Patent Claim Types:
see list of patent claims
Composition; Formulation; Device; Use;
Patent PDF download available with subscription

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International Patent Family for Patent: 5,599,552

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria100308<disabled in preview>
Austria163261<disabled in preview>
Austria212866<disabled in preview>
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.

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