Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yong Jun Jang0
Chang Young Lee0
Jae Heon Choe0
Jae Hoon Kim0
Jeong Min Jo0
Jin Ho Lee0
Jung Youl Lim0
Kwan Sup Lee0
...
Date of Patent
May 3, 2022
0Patent Application Number
166079430
Date Filed
July 19, 2018
0Patent Citations Received
Patent Primary Examiner
A tube infrastructure includes a first tube; a second tube that is coupled to the first tube; and a fluid tank that is disposed to surround a coupling region of the first tube and the second tube and is filled with a fluid to seal the coupling region, wherein the fluid tank allows negative pressure to be maintained inside the first tube and the second tube.
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