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:
Dec. 11, 2007
Filed:
Sep. 16, 2004
Applicant:
Norman Henry White, Tonawanda, NY (US);
Inventor:
Norman Henry White, Tonawanda, NY (US);
Assignee:
Praxair Technology, Inc., Danbury, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F17C 13/00 (2006.01); F16L 9/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for improving the insulation characteristics of a cryogenic piping system wherein an insulation volume defined by a jacket coaxial to an inner pipe is evacuated to a moderate vacuum and then filled with a condensable gas in one or more evacuation and filling cycles, and then, after evacuation to a moderate vacuum, the condensable gas is condensed to effect a high vacuum within the insulation volume.