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Beverages
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Patent number 4,946,701
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Issue date Aug 7, 1990
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Procter & Gamble
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Chee-Hway Tsai
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A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
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Process for making green tea solids
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Patent number 4,935,256
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Issue date Jun 19, 1990
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Procter & Gamble Company
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Chee-Hway Tsai
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A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
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Enzymatic treatment of black tea leaf
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Patent number 4,639,375
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Issue date Jan 27, 1987
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The Procter & Gamble Company
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Chee-Hway Tsai
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A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES