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. 03, 1981
Filed:
Aug. 01, 1979
Applicant:
Inventor:
Merritt J Hummel, New Kensington, PA (US);
Assignee:
PPG Industries, Inc., Pittsburgh, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C03B / ;
U.S. Cl.
CPC ...
65 27 ; 65 9 / ;
Abstract
The method of improving the cleaning of float forming chamber roofs is disclosed. The method involves the use of heated forming or nitrogen gas which is directed against the surface of the roof. In a preferred embodiment, hydrogen sulfide or other sulfur containing gas is added to the gas directed against the roof in order to aid in cleaning by converting elemental tin to tin sulfide which will sublimate at the temperature of the heated gas.