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:
Aug. 17, 1999
Filed:
Jul. 31, 1997
Applicant:
Inventors:
Mitsuhide Takeharada, Tokyo, JP;
Shigeyoshi Nozawa, Osaka, JP;
Assignee:
Teisan K.K., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F17C / ; F17C / ;
U.S. Cl.
CPC ...
141 18 ; 141-2 ; 141-3 ; 141-4 ; 141 97 ; 454187 ;
Abstract
A gas filling facility and method which maintains the purity of a gas to be filled. A connection of a gas supply pipe and a gas filling pipe attached on gas containers is performed in a first clean room while the storage of the gas filling pipe occurs in a second clean room. When the gas filling pipe is stored, ultra-high purity nitrogen gas is caused to flow through the inside thereof, so that the inside of the gas filling pipe remains under an extremely clean state.