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US 5,183,688 AGranted
Convex reflective sign and method of making same
OwnerPaul Sorko-Raminventor
Life of this patent
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Abstract
The invention is a convex mirror for surveillance purposes, in combination with an advertising message, and the method of fabricating same. A removable mask is attached to the interior of the surface to be mirrored, and a non-reactive removable liquid mask is applied to the openings in the removable mask. The removable mask is removed, and a mirror material is applied to the surface. The liquid mask is allowed to solidify, then removed, leaving one or more transparent areas in the surface of the mirror.
Claims5
The method of creating a transparent area on an acrylic mirrored surface comprising the steps of:
- a. applying a removable mask with a desired pattern of openings therein to one surface of a two-sided transparent acrylic material;
- b. applying over said mask a water-based resist mixture comprising polyvinyl alcohol, water, isopropyl alcohol, a surfactant and cornstarch;
- c. allowing said resist mixture to dry;
- c. allowing said resist mixture to dry;
- d. removing said mask, leaving said resist;
- e. depositing a thin film of reflective material on said one surface, including said resist;
- and
- f. removing said resist.
5 more elements
Dependencies are inferred from the claim text.