| Patents for C09B 61 - Dyes of natural origin prepared from natural sources (3,035) |
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| 05/19/1981 | US4268265 Natural dyestuffs for gelatine capsules |
| 04/21/1981 | US4263333 Reacting turmeric with zinc or tin ions to produce food coloring |
| 04/07/1981 | US4260388 Purification of anthocyan solutions |
| 03/25/1981 | EP0025637A1 Curcumin-metal colour complexes and process for preparing them |
| 03/11/1981 | EP0024731A1 A photostable anthocyanic colorant composition and its use in a food composition |
| 03/10/1981 | US4255563 Process for preparing anthocyans from corresponding flavonoid glycosides |
| 01/27/1981 | US4247698 Red coloring composite and the method for its production |
| 12/11/1980 | WO1980002695A1 Edible colourant |
| 12/09/1980 | US4238518 Process for the preparation of a stable Beta vulgaris extract |
| 10/01/1980 | EP0016034A1 Stable food and beverage colorant, anthocyanin-peonidin-3-(dicaffeylsophoroside)-5-glucoside |
| 07/08/1980 | US4211577 Process of purifying plant anthocyanin colors |
| 06/24/1980 | CA1080243A1 Manufacture of canthaxanthin |
| 05/20/1980 | US4204073 Trimethyl oxo or hydroxy-substituted cyclopentenes; intermediates for violerythrin and actinioerythrol |
| 05/20/1980 | US4204043 Method of removing pigment from annatto seed |
| 12/13/1979 | WO1979001128A1 Stable food and berverage colorant,anthocyanin-peonidin-3-(di-caffeylsophoroside)-5-glucoside |
| 10/30/1979 | US4172902 Food dye |
| 10/17/1979 | EP0004681A1 Process for preparing anthocyans from the corresponding flavonoid glycosides |
| 09/18/1979 | CA1062640A1 Color extract from beets and method for the preparation of same |
| 07/12/1979 | WO1979000394A1 Red series pigment composition and process for the production of the same |
| 05/22/1979 | US4156090 Intermediates for dyes for foods and pharmaceuticals |
| 05/22/1979 | US4156077 Process for obtaining a dye substance of vegetal origin |
| 03/20/1979 | US4145254 Aerobic culturing of monascus |
| 03/06/1979 | CA1049837A1 Extraction of flavour and colour from shellfish waste |
| 02/06/1979 | US4138212 Mixing ground turmeric root and a reaction product of a vegetable oil and alkali metal hydroxide |
| 11/28/1978 | US4127455 Manufacture of symmetrical carotenoids |
| 08/08/1978 | US4105675 Reducing acylated flavanone with alkali borohydride to remove oxygen function at 4-position; oxidizing with halogenated benzoquinone to form salt |
| 04/11/1978 | US4083779 Ultrafiltration, reverse osmosis |
| 09/13/1977 | US4048203 Alkanol precipitation |
| 06/21/1977 | US4031250 Method for imparting red color to animal food |
| 06/07/1977 | US4028217 Method for the separation of chlorophyll |
| 05/31/1977 | US4027042 Color extract from beets and method for the preparation of same |
| 05/24/1977 | US4025829 Silver mica block condenser and method of making the same |
| 12/21/1976 | US3998753 Pharmacological or cosmetic preparations or animal feedstuff |
| 12/14/1976 | US3997679 Esters |
| 11/23/1976 | US3993789 Food coloring |