US Patent 7451621 Bubble formation in liquid such as molten glass

Patent 7451621 was granted and assigned to Praxair on November, 2008 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Praxair

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

74516210

Date of Patent

November 18, 2008

Patent Application Number

111364010

Date Filed

May 25, 2005

Patent Primary Examiner

‌

Steven P. Griffin

Patent abstract

Bubbles of uniform diameter of 0.5 to 4 cm of gas such as helium are formed and pass into liquid such as molten glass by accumulating a sufficient volume of gas through a flow restriction into a space upstream of the point of injection at a controlled flow rate.