Patent · US Expired

Process for drying of natural extracts prepared by high pressure extraction

US4511508A · kind A · utility

9Cited by

0References

8Claims

0Family size

Assignee

SKW Trostberg Aktiengesellschaft · DE

Inventors

Heinz-Rudiger Vollbrecht · Cham, DE
Erwin Schutz · Palling, DE
Klaus Sandner · Trostberg, DE

Key dates

Filing date	Apr 27, 1982
Grant date	Apr 16, 1985
Priority date	—
Expiry date	Apr 27, 2002

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D11/0203
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method is described for drying extracts of natural substances obtained by high-pressure extraction with liquefied gases or gases in the supercritical state; it consists in treating the gas stream that is charged with the extract with a solid drying agent, preferably calcium sulfate, in powder or granular form.

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