| US 7,581,407 B1 | ||
| Method of using dry cryogenic shipping container | ||
| John Lawrence Romanos, Mobile, Ala. (US); and Norman Braxton Breighner, Theodore, Ala. (US) | ||
| Assigned to TW Cryogenics LLC, Theodore, Ala. (US) | ||
| Filed on Oct. 25, 2007, as Appl. No. 11/977,597. | ||
| Application 11/977597 is a division of application No. 11/257936, filed on Oct. 25, 2005, granted, now 7,299,650. | ||
| Int. Cl. F24F 3/16 (2006.01) | ||
| U.S. Cl. 62—78 [62/371; 220/560.04] | 4 Claims |
| 1. A method of using a cryogenic shipping container, said shipping container having a first, outer shell assembly with a body
defining an enclosed space and an opening, a second, inner shell assembly with a body defining an inner space and an opening,
said second, inner shell assembly body opening coupled to said first, outer shell assembly body opening, thereby defining
a passage from outside said container to said inner space, said second, inner shell assembly body generally disposed within,
and spaced from, said first, outer shell assembly body, thereby forming a plenum within said enclosed space, having a vacuum
drawn in said plenum, a removable shipper core structured to be disposed in said inner space, and an absorbent assembly having
a plurality of removable absorbent assembly elements wherein said elements are sized to pass through said passage, said method
comprising the steps:
inserting said removable absorbent assembly elements into said inner space;
inserting said shipper core into said inner space;
filling said inner space with a cryogenic liquid;
disposing a use material in said shipper core for a period of time;
removing said use material from said shipper core;
removing said shipper core;
removing said absorbent assembly elements from said inner space; and
sterilizing said inner space of said inner shell assembly body.
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