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:
Apr. 01, 2003
Filed:
Oct. 16, 1996
Applicant:
Inventors:
Assignee:
Etex Corporation, Cambridge, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 3/342 ; A61K 3/800 ; C01B 2/526 ;
U.S. Cl.
CPC ...
A61K 3/342 ; A61K 3/800 ; C01B 2/526 ;
Abstract
The present invention provides delivery vehicles comprising a synthetic, poorly crystalline apatite (PCA) calcium phosphate and a biologically active agent. The PCA calcium phosphate offers many advantages over known delivery materials and is particularly useful for delivery of agents to bone sites, the central nervous system, intramuscular sites, subcutaneous sites, interperitoneal sites, and occular sites. The invention also provides methods of preparing delivery vehicles, of altering delivery vehicle characteristics, and of delivering biologically active agents to a site. The invention is useful for both medical and veterinary applications.