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:
Jun. 16, 1992
Filed:
Nov. 24, 1989
Makoto Noda, Nagoya, JP;
Toru Kikuchi, Nagoya, JP;
NGK Insulators, Ltd., , JP;
Abstract
An atmosphere control system, including, a standard gas supplying device for supplying a gas of a determined composition, an oxygen concentration controlling device connected to the standard gas supplying device for adjusting oxygen concentration of the gas of the determined composition, an atmosphere holding device connected to the oxygen concentration controlling device for receiving the oxygen concentration adjusted gas, and an oxygen concentration measuring device arranged at the upstream side of the atmosphere holding device between the standard gas supplying device and the oxygen concentration controlling device or between the oxygen concentration controlling device and the atmosphere holding device or at the downstream side of the atmosphere holding device for measuring oxygen concentration in the gas at the position of the oxygen concentration measuring device is provided. The present system can provide gases of low oxygen concentration, easily and precisely control oxygen concentration in the gas of the system, and prevent oxidization of articles in treating thereof in the atmosphere holding device.