Multicolor anodizing of aluminum

Claim 1

THE PROCESS OF COLORING AN ALUMINUM SURFACE WHICH CONSISTS OF ANODIZING THE SURFACE TO PROVIDE A CLEAN POROUS SURFACE, PROVIDING A WATER PASTE MADE UP OF SOLIDS TAKEN FROM THE CLASS CONSISTING OF WATER SOLUBLE GUMS AND STARCHES WHICH ARE RELATIVELY SOLUBLE IN COLD WATER AND RELATIVELY INSOLUBLE IN HOT WATER, MIXING A DYE SOLVENT WHICH IS MISCIBLE IN WATER IN SAID PASTE, MIXING DIFFERENT COLORED DYES SOLUBLE IN SAID SOLVENT SEPARATE BATCHES OF SAID PASTE AND SOLVENT MIXTUER, APPLYING COATINGS OF SAID COLORED BATCHES TO DIFFERENT PORTIONS OF SAID SURFACE WITH ONE COATING OVERLAPPING ANOTHER IN SELECTED AREAS, ALLOWING SAID COATINGS TO DRY TO THE TOUCH, APPLYING A PROTECTIVE COATING OF SAID UNCOLORED PASTE OVER SAID COLORED COATINGS, IMMERSING THE SURFACE SO COATED IN A BATH OF WATER HEATED TO BETWEEN 130* AND 190*F. FOR A PERIOD OF BETWEEN 5 AND 30 MINUTED TO CAUSE THE COLORED DYES IN SAID PASTES TO BE TRANSFERRED TO THE SUBADJACENT AREAS OF SAID SURFACE AND MIXED INTO A NEW COLOR BLEND WHERE THE COATINGS OVERLAP, IMMERSING SAID SURFACE IN A BATH OF WATER WITH NICKEL ACERATE THEREIN AT A TEMPERATURE 200* AND 212*F. TO SEAL SAID POROUS SURFACE, AND MECHANICALLY REMOVING SAID COATINGS FROM SAID SURFACE.