Search Results for: Compound optical
permanently on substrate, other than nominal printing, using print paste containing discharge material, resist material, or dye material; or stencil dyeing (class / ) resist or reserve (class / ) discharge utilized (class / ) vat dye or sulfur dye, e.g., quinonic or indigoid reducible dye, sulfur organic compound
(class / ) fluorescent dye, e.g., stilbene, benzimidazole, benzoxazole, benzothiazole, pyrazoline dye, etc., optical brightner or bluing agent (class / ) oxidation dye, e.g., aniline, nitroaniline, etc....
https://patents.justia.com/patents-by-us-classification/8