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. 07, 2023
Filed:
Jan. 22, 2019
Applicant:
Tepha, Inc., Lexington, MA (US);
Inventors:
David P. Martin, Arlington, MA (US);
Simon F. Williams, Cambridge, MA (US);
Kai Guo, Belmont, MA (US);
Assignee:
Tepha, Inc., Lexington, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61L 31/06 (2006.01); A61L 31/10 (2006.01); C12P 7/625 (2022.01); G01N 33/50 (2006.01); A61L 27/18 (2006.01); C08G 63/06 (2006.01); A61L 27/34 (2006.01); A61L 17/10 (2006.01); C08G 63/90 (2006.01);
U.S. Cl.
CPC ...
A61L 31/06 (2013.01); A61L 17/105 (2013.01); A61L 27/18 (2013.01); A61L 27/34 (2013.01); A61L 31/10 (2013.01); C08G 63/06 (2013.01); C08G 63/90 (2013.01); C12P 7/625 (2013.01); G01N 33/5088 (2013.01); Y10T 436/201666 (2015.01);
Abstract
Compositions of P4HB with high purity have been developed. The compositions are prepared by washing P4HB biomass prior to solvent extraction, and precipitating P4HB from solution. The same solvent is preferably used to wash the P4HB biomass, and as a non-solvent to precipitate the polymer from a P4HB solvent solution. The highly pure P4HB compositions are suitable for preparing implants. The implants may be used for the repair of soft and hard tissues.