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:
Apr. 19, 2022
Filed:
Oct. 23, 2017
Shimadzu Corporation, Kyoto, JP;
Jun Yanagibayashi, Kyoto, JP;
Shinya Imamura, Kyoto, JP;
Keisuke Ogawa, Kyoto, JP;
Masataka Nikko, Kyoto, JP;
Shinichi Fujisaki, Kyoto, JP;
Shimadzu Corporation, Kyoto, JP;
Abstract
The liquid feeding device includes a discharge speed calculation part configured to calculate a discharge speed v of the plunger pump so that a converted value Lunder an atmospheric pressure of a flow rate Lof the mobile phase discharged to the discharge channel from the pump part becomes a set flow rate Lusing a volume V of the mobile phase in the pump chamber of the closing pump immediately before the precompression process is started, a volume ΔV reduced due to the precompression process of the mobile phase in the pump chamber of the closing pump, and a feeding pressure P; and a discharge operation controller configured to control a discharge speed of the plunger pump to a discharge speed v calculated by the discharge speed calculation part.