# US 6,296,911 B1 · Method for obtaining the chromatic variation of objects, in response to external stimuli, and a product obtained thereby

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 6,296,911 B1
- Document ID: US6296911B1
- Status: Granted
- Kind: B1
- Application number: 09/234,196
- Filed: 1999-01-20
- Granted: 2001-10-02
- Earliest claimed: 1998-01-20
- Inventors: Leonardo Catarineu Guillén
- Web page: https://patentgrep.com/patent/US6296911B1

## CPC

- C09K 9/02: Organic tenebrescent materials
- C09D 5/22: Luminous paints {(luminescent compositions C09K11/00)}
- C09K 9/00: Tenebrescent materials, i.e. materials for which the range of wavelengths for energy absorption is changed as a result of excitation by some form of energy
- C09K 11/025: {non-luminescent particle coatings or suspension media}
- C09K 11/584: {with zinc or cadmium}
- Y10S 428/913: Material designed to be responsive to temperature, light, moisture
- Y10T 428/24802: Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
- Y10T 428/24901: including coloring matter
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A method for obtaining the chromatic variation of objects, in response to external stimuli, and a product obtained thereby. The method comprises the incorporation in the desired objects of various pigments having combined effects comprising a luminescent pigment, a thermochromic pigment permitting the change in the color according to the temperature and/or a hygroscopic pigment which will provoke a variation in the chromatic characteristics according to humidity. The objects manufactured make it possible to obtain effects of luminescence and of chromatic variation as the temperature and humidity vary.

## Claims

### Claim 1

Objects having chromatic variation, in response to external stimuli, both with daytime vision and night vision, the incorporation in said objects of at least one of a luminescent pigment, a thermochromic pigment to allow variation in color according to temperature and a hygroscopic pigment that varies in chromatic characteristics according to humidity, said pigments being in conjoint form in their mass.

### Claim 2 (depends on 1)

Objects in accordance with claim 1, wherein the combination of pigments are incorporated by means of successive layers applied to the mass of the object.

### Claim 3 (depends on 2)

Objects in accordance with claim 2, wherein the combinations of pigments are included by means of successive layers of paint.

### Claim 4 (depends on 1)

Objects in accordance with claim 1, wherein the combination of pigments is applied to one side of a laminar support, and adhesive applied to another side of the laminar support.

### Claim 5 (depends on 1)

Objects in accordance with claim 1, wherein the combination of pigments are in a mass having permanent moldable characteristics.

### Claim 6 (depends on 1)

Objects in accordance with claim 1, wherein the combination of pigments were incorporated in the object by injection molding of a plastic mass which contains them.