Patent · US Expired

Apparatus for cryogenic treatment, such as air distillation

US5412954A · kind A · utility

14Cited by

7References

12Claims

0Family size

Assignee

L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude · FR

Inventor

Maurice Grenier · Paris, FR

Key dates

Filing date	Sep 10, 1993
Grant date	May 9, 1995
Priority date	—
Expiry date	Sep 10, 2013

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S62/907
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

In this apparatus, the treatment column is insulated by means of a sheath under vacuum while the heat exchange line is insulated by means of a cold box under atmospheric pressure containing a solid insulating material such as a material in particulate form.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.