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. 16, 2026
Filed:
May. 31, 2022
Refine Holdings Co., Ltd., Gifu, JP;
Junya Ohno, Tokyo, JP;
Hideki Ishizawa, Tokyo, JP;
Tomokiyo Takeyama, Tokyo, JP;
Akiyoshi Oda, Tokyo, JP;
Hiroaki Takahashi, Tokyo, JP;
Kouji Nakashima, Tokyo, JP;
Tadashi Noumi, Tokyo, JP;
Tomoya Fujita, Tokyo, JP;
Mitsuhiro Iwafune, Tokyo, JP;
Takao Suzuki, Tokyo, JP;
REFINE HOLDINGS CO., LTD., Gifu, JP;
Abstract
A multi-tower liquid-liquid extraction apparatus having two or more extraction towers arranged in parallel. Each tower has a heavy-liquid supplying port at the top and a heavy-liquid discharging port at the bottom. Additionally, each tower has a light-liquid supplying port at the bottom and a light-liquid discharging port at the top. The heavy-liquid channels of the extraction towers are connected in series. Furthermore, at least two of the extraction towers are connected to respective diaphragm chambers through their respective piping. These diaphragm chambers have a closed space, part of the wall of which is formed by a diaphragm whose volume is changed by an operating drive section. The piping between each extraction tower and its respective diaphragm chamber is equipped with a pressure-regulating chamber and an on/off valve to regulate the internal pressure.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile