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:
Mar. 31, 1998
Filed:
Dec. 29, 1995
Takahide Fukuda, Kumamoto, JP;
Shinichiro Izumi, Kumamoto, JP;
Yoshio Kimura, Kumamoto-ken, JP;
Yuuji Matsuyama, Kumamoto-ken, JP;
Satoshi Morita, Kumamoto-ken, JP;
Kunie Tsunematsu, Kumamoto, JP;
Tokyo Electron Limited, Tokyo, JP;
Abstract
An apparatus for supplying a treating material to a treating device has a tank containing a liquid treating material and a heat exchanger formed by a spiral pipe and provided in the tank. A nitrogen gas (N.sub.2 gas) is introduced into the tank and evaporates the liquid treating material. Water is supplied from a fluid inlet pipe connected to the lower portion of the exchanger to a fluid outlet pipe connected to the upper portion of the exchanger through the spiral pipe of the exchanger. In the heat exchange, heat exchange between the water and the liquid treating material is performed very efficiently. No use of electric power provides high safety. The temperature of the liquid treating material which is changed into a gas state by a bubbling process is controlled efficiently and the density of the vaporized treating material in the tank is made stable.