Coating process
US4438159A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 8, 1982 |
| Grant date | Mar 20, 1984 |
| Priority date | — |
| Expiry date | Mar 8, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D11/00903
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
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 The object is then withdrawn from the saturated atmosphere and dried in the conventional manner.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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.