Patent · US Expired

Device for dehydrating and/or embedding samples

US5469712A · kind A · utility

4Cited by

3References

17Claims

0Family size

Assignee

Leica AG · AT

Inventors

Hellmuth Sitte · Laa an der Thaya, AT
Klaus Neumann · Niederwerrn, DE
Ludwig Edelmann · Premich, DE
Helmut Haessig · Homburg, DE
Anton Lang · Wien, AT
Heinrich Kleber · Wien, AT

Key dates

Filing date	May 31, 1994
Grant date	Nov 28, 1995
Priority date	—
Expiry date	May 31, 2014

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF17C2223/0161
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Device for dehydrating and/or embedding preferably frozen samples, comprising a Dewar vessel (1) filled with liquid nitrogen (2) and a metallic element (4), anchored to the floor (3), of material of good thermal conductivity, which exhibits at its upper end in the region of attachment of the Dewar neck a cover (5) with a metallic cooling surface (6, 7) which corresponds with the complementarily designed lower contact surfaces of the thermostatically heated (9, 10) substitution (PLT) containers (8) or respectively of the lower part of a freeze-drying chamber in a manner which ensures a good heat transfer between the corresponding surfaces.

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