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:
Feb. 06, 1979
Filed:
Aug. 03, 1977
Applicant:
Inventor:
Francis J Ziolko, Somerville, NJ (US);
Assignee:
Devro, Inc., Somerville, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A22C / ; A23P / ;
U.S. Cl.
CPC ...
426514 ; 1381181 ; 138130 ; 138137 ; 264173 ; 264209 ; 2642 / ; 426513 ; 426516 ;
Abstract
A method of making a tubular collagen casing includes extruding collagen gel into two sets of gel ropes, each of the sets comprising a plurality of ropes. The ropes in one of the sets are directed radially outwardly and helically in one direction to form a first tubular layer. In the other set, the ropes are directed radially inwardly and helically in the opposite direction to form a second tubular layer concentric with the first layer. Following this, the layers are hardened in united relationship with one another.