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. 07, 1987
Filed:
Sep. 12, 1985
Leslie L Balassa, Blooming Grove, NY (US);
Lescarden Inc, New York, NY (US);
Abstract
Disclosed is a method of preparing finely divided cartilage powder from raw cartilage including the steps of mechanically trimming raw cartilage from an animal body, and granulating the raw cartilage into granules having an average size of from about 4 mm to 8 mm diameter. The granules are then subjected to azeotropic extraction, the extraction conducted with an extracting agent which both forms an azeotrope with water and solubilizes fat. The granules are then separated from the extracting agent, and milled to an average size of from about 40 to 70.mu. diameter. Also disclosed is a method of separating calcium compounds from cartilage including the steps of mechanically trimming raw cartilage from an animal body, granulating the raw cartilage into granules having an average size of from about 4 to 8 mm diameter, and partially drying the granules to produce a friable calcified outer layer on each granule. The granules are then subjected to mechanical agitation to pulverize the friable calcified outer layer and separated from the pulverized calcified outer layer. Also disclosed is a method of preparing finely divided cartilage powder involving a freeze-drying step.