Technicolor related patent on dyes - 1972 -US 3835781 A

Technicolor related patent on dyes - 1972 -US 3835781 A

  1. Mustafa Umut Sarac
    You can download full patent from google patents , I copied the most important parts.

    DYE COLOR INDEX NUMBER Pontamine Fast Red 8 BLX 28160 Pontamine Fast Orange 40265 Fast Red S Conc. 15620 Congo Red 48X 22120 Pontacyl Carmine 6B Extra Conc....
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