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. 04, 1997
Filed:
Mar. 01, 1995
Ronald D Goodman, Toledo, OH (US);
Libbey-Owens-Ford Co., Toledo, OH (US);
Abstract
A method for applying a coating to a substrate comprises a gas distributor having an outlet disposed adjacent to the substrate for directing a gaseous reactant mixture to the surface of the substrate. A plurality of drop tubes are provided which communicate with and are spaced along the length of the distributor for supplying the gaseous reactant mixture to the distributor. The uniformity of the thickness of the coating which is applied to the substrate along its width is determined. Finally, one or more of the reactants or an inert gas is supplied to one or more of the drop tubes to alter the concentration of one or more of the reactants in the gaseous reactant mixture flowing through one or more drop tubes. The rate of deposition of the coating in the proximity of such drop tubes is thereby altered to improve the uniformity of the coating deposited.