Coating process
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United States of America Patent
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Mar 20, 1984
Grant Date -
N/A
app pub date -
Mar 8, 1982
filing date -
Mar 8, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention comprises a method and apparatus for providing a uniform coating on objects such as a lens. A bath of coating solution is provided and the object to be coated is immersed into the solution. The object is then removed into an atmosphere substantially saturated with the coating solution. The object is maintained in the substantially saturated atmosphere for a predetermined time to allow excess coating material to disperse and flow off the surface of the object. The object is then withdrawn from the saturated atmosphere and dried in the conventional manner. The maintenance of the object within the substantially saturated atmosphere for the predetermined time eliminates the formation of puddles and drip lines.
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