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:
Oct. 30, 2012
Filed:
Mar. 20, 2008
Takayuki Hayashi, Shimosuwa, JP;
Yasuhiko Asano, Chino, JP;
Takayuki Hayashi, Shimosuwa, JP;
Yasuhiko Asano, Chino, JP;
Seiko Epson Corporation, , JP;
Abstract
Provided herein is a functional liquid supply apparatus having: a plurality of sub tanks, a tank unit which replenishes the functional liquid to the plurality of sub tanks, an upstream side functional liquid channel of which an upstream side thereof is connected to the tank unit and a downstream side thereof is connected to each of the sub tanks, and a plurality of third opening and closing valves which replenish the functional liquid to each of the sub tanks by its' opening and closing operations. The tank unithas a pair of main tanks, nitrogen gas supply units connected to the pair of the main tanks respectively, and a switching device which is capable of switching a pressurized liquid of the functional liquid fed from the pair of the main tanks alternatively.