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:
Oct. 16, 2012
Filed:
Dec. 17, 2008
David P. Martin, Arlington, MA (US);
Said Rizk, Salem, NH (US);
Kicherl Ho, Acton, MA (US);
Simon F. Williams, Sherborn, MA (US);
David P. Martin, Arlington, MA (US);
Said Rizk, Salem, NH (US);
Kicherl Ho, Acton, MA (US);
Simon F. Williams, Sherborn, MA (US);
Tepha, Inc., Lexington, MA (US);
Abstract
Continuous processing methods for making absorbable polymeric non-wovens with one or more of the following properties: high burst strength, fine fibers of average diameter from 1 μm to 50 μm, and thickness from 10 μm to 50 mm, have been developed. Improved fiber cohesion is made possible by allowing the fibers of the non-woven to initially remain molten during web collection. In the preferred embodiment, the polymer is a polyhydroxyalkanoate, and in the most preferred embodiment, the polymer comprises 4-hydroxybutyrate. A particularly preferred embodiment is a non-woven of poly-4-hydroxybutyrate or copolymer thereof, wherein the non-woven has a burst strength greater than 0.1 Kgf, wherein the non-woven is derived by a continuous melt-blown process. The non-wovens can be used for a variety of purposes including fabrication of medical devices.