Abstract
Citrus fruits are native to India, Myanmar, Peninsular Malaysia, Indochina, China, Korea, and Japan. The citrus cultivation in the world spreads from the tropics(from 40 degrees north latitude to 40 degrees south latitude) to temperate zones, reaching about 50 countries. Among the ingredients of citrus peel, turpentine, rutin, and hesperedin have various effects. As a result of investigating cases of domestic and foreign patents related to citrus fruits and analyzing patent trends, domestic and foreign patent applications have been decreasing rapidly since 2017, and are mainly counted in the order of food, cosmetics, and medical substances. The distribution by country was 65% in Japan, 21% in China, and 11% in Korea. Japan is specialized in medicines, cosmetics and related machinery, while Europe is concentrated in medicines and cosmetics. In the United States, it appears that plant patents dominate. The patent trend in the field of citrus utilization in Korea appears to be in the early stages of maturity passed the development stage in the transition analysis divided into development stage, maturation stage, reflux stage, and resurrection stage.
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