Patent ID: 9305768
Filing Date: 2016-04-05
CPC Classification: B08B,H01L

Claim Text:
1. A method of processing a flat article comprising: a) supporting a flat article in a substantially horizontal orientation within a gaseous atmosphere, the flat article having a bottom surface and a top surface; b) rotating the flat article while maintaining the substantially horizontal orientation; c) applying a film of liquid to the top surface of the flat article; d) applying a film of liquid to the bottom surface of the flat article; e) applying acoustic energy to the top surface of the flat article via a first transducer assembly comprising a first transducer and a first transmitter, a portion of the first transmitter in contact with the film of liquid on the top surface of the flat article; and f) applying acoustic energy to the bottom surface of the flat article via a second transducer assembly comprising a second transducer and a second transmitter, a portion of the second transmitter in contact with the film of liquid on the bottom surface of the flat article; and wherein the portion of the first transmitter that contacts the film of liquid on the top surface of the flat article is not aligned with and does not oppose the portion of the second transmitter that contacts the film of liquid on the bottom surface of the flat article.