Patent · US Expired

Method for extraction and reaction using supercritical fluids

US6294194A · kind A · utility

72Cited by

17References

26Claims

0Family size

Assignee

Boehringer Ingelheim Pharmaceuticals, Inc. · US

Inventors

Stephen Horhota · Brookfield, US
Said Saim · Lawrence, US

Key dates

Filing date	Mar 3, 2000
Grant date	Sep 25, 2001
Priority date	—
Expiry date	Mar 3, 2020

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02C20/40
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

Methods for removing soluble material from confined spaces within substrates such as containers, capsules and porous powders comprising extraction with supercritical fluids, the pressure of which is preferably modulated between an upper level and a lower level within a relatively narrow range of fluid pressure and density. The method permits enhanced extraction efficiency, catalytic reaction rates and ability to maintain catalyst activity.

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