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. 14, 1997
Filed:
Jun. 06, 1995
Applicant:
Inventor:
Shu-Tung Li, Oakland, NJ (US);
Assignee:
ReGen Biologics, Inc., Menlo Park, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; A61K / ; A61F / ;
U.S. Cl.
CPC ...
514 21 ; 514801 ; 530356 ; 424422 ; 424423 ; 424484 ; 424491 ;
Abstract
A collagen-based delivery matrix including collagen particles, wherein each of the particles has a diameter between 5 .mu.m and 850 .mu.m and, when suspended in an aqueous solution at a pH of about 7.0, has a net charge density between -20 moles/mole collagen and -500 moles/mole collagen, or between +20 moles/mole collagen and +250 moles/mole collagen. Also disclosed are methods of preparing and using such a delivery matrix.