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:
Jun. 21, 2022
Filed:
Oct. 11, 2018
Hitachi, Ltd., Tokyo, JP;
HITACHI, LTD., Tokyo, JP;
Abstract
Provided is an extraction method for extracting an extract from a mixture using liquefied gas that can dissolve the extract, the method facilitating extraction operations and enabling low cost operation. An extraction device that extracts a component dissolved in liquefied gas from material to be treated using continuous phase changes in the liquefied gas is characterized by being provided with: a compressor that feeds gas under pressure; a heat exchanger for generating liquefied gas by the gas flowing in a high temperature side flow path; a treatment tank into which the material to be treated is loaded and the liquefied gas flows; and a retention tank provided in series or in parallel to the flow path downstream of the high temperature side flow path in the heat exchanger.