Method of etching stone materials
OwnerRicardo Pasaran Sayago, Benigno Pasaran Sayagoinventors
Life of this patent
Estimating the term…
Abstract
The present invention relates to an improved method of engraving stone which comprises the steps of; applying to a stone material an acid resistant polymer or lacquer coating upon portions of said stone material that are not to be engraved; bathing the coated stone material with a sufficient amount of acid for a sufficient period of time to engrave said stone material; washing the stone material with a sufficient amount of base to neutralize the acid; and, removing the coating to obtain an engraved stone material. In particular the present invention relates to methods of engraving marble or onyx using nitric acid, hydrochloric acid or hydrofluoric acids.
Claims18
A method of engraving a stone material which comprises the steps of:
- a) applying an acid resistant coating to portions of a stone material that are not to be engraved;
- b) bathing the coated stone material with a sufficient amount of acid for a sufficient period of time to engrave said stone material;
- c) washing the stone material with a sufficient amount of a base to neutralize the acid;
- and
- d) removing the coating to obtain an engraved stone material.
A method of engraving a marble material which comprises the steps of:
- a) applying to the marble material an acid resistant coating composition comprising nitrocellulose, a mixture of aromatic napthas and a plasticizer upon portions of said stone material that are not to be engraved;
- b) bathing the coated marble material with a sufficient amount of an acid selected from the group consisting of nitric acid, hydrochloric acid, and hydrofluoric acid for a sufficient period of time to engrave said marble material;
- c) washing said marble material with a sufficient amount of sodium bisulfite to neutralize the acid;
- and
- d) removing the coating to obtain an engraved marble material.
A method of engraving an onyx material which comprises the steps of:
- a) applying to the onyx material an acid resistant coating a composition comprising nitrocellulose, a mixture of aromatic napthas and a plasticizer upon portions of said onyx material that are not to be engraved;
- b) bathing the coated onyx material with a sufficient amount of an acid selected from the group consisting of nitric acid, hydrochloric acid, and hydrofluoric acid for a sufficient period of time to engrave said onyx;
- c) washing said marble material with a sufficient amount of sodium bisulfite to neutralize the acid;
- and,
- d) removing the coating to obtain an engraved onyx material.
An engraved stone material made by a method which comprises the steps of;
- a) applying an acid resistant polymer or lacquer coating to portions of a stone material that are not to be engraved;
- b) bathing the coated stone material with a sufficient amount of acid for a sufficient period of time to engrave said stone material;
- c) washing the stone material with a sufficient amount of a base to neutralize the acid;
- and
- d) removing the coating to obtain an engraved stone material.
Dependencies are inferred from the claim text.