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. 24, 1995
Filed:
May. 27, 1994
David J Fink, Shaker Heights, OH (US);
Richard S Brody, Worthington, OH (US);
Ranpak Corp., Concord Township, OH (US);
Abstract
The invention includes a method that produces a low cost aqueous solution of solubilized collagen by the steps of: (a) providing an aqueous ground slurry of insoluble collagen and adjusting the pH of said slurry to obtain activity for a proteolytic enzyme added in Step b; (b) adding said proteolytic enzyme to said pH adjusted slurry; (c) reacting the slurry and enzyme of Step b and/or recycled insoluble collagen and enzyme from Step e at a temperature, T, and for a time, t, effective for forming a solution increased in solubilized collagen; (d) adding additional water and insoluble collagen to said solution of Step c and mixing; (e) separating at least some of the solution of Step d containing solubilized collagen from insoluble collagen, whereby at least a portion of said insoluble collagen and proteolytic enzyme is recycled to Step c, and the separated solution containing solubilized collagen is withdrawn as product; an alternative embodiment provides for the direct production of solubilized collagen without the recycle step.