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:
Sep. 15, 1987
Filed:
Sep. 23, 1985
Lorne C Scharnberg, Des Moines, IA (US);
Deva Devanathan, Warsaw, IN (US);
Katecho, Incorporated, Des Moines, IA (US);
Abstract
The present invention comprises a flexible planar sheet having perimetric edges, the sheet being formed from a plurality of multi-fiber carbon filaments. The sheet is coated with a first solution of biodegradable polymer dissolved in a solvent, and the solvent is permitted to evaporate thereby leaving a first film of biodegradable polymer on the flexible sheet member. A second solution is applied to the sheet and contains a biodegradable polymer dissolved in a solvent, the concentration by weight of the polymer with respect to the solvent being greater in the second solution than in the first solution. When the solvent of the second solution evaporates it leaves a second film of biodegradable polymer on the planar sheet adjacent to the perimetric edges thereof. An alternative method of applying the polymer to the sheet is to lay polymer strips on the sheet and to apply heat to those polymer strips.