Salicylic acid the product with sulfuric acid gives salicylic acid: It can also be prepared by the hydrolysis of aspirin (acetylsalicylic acid) or methyl salicylate (oil of wintergreen) with a strong acid or base. Hippocrates, Galen, Pliny the Elder and others knew that willow bark could ease pain and reduce fevers. It was used in Europe and China to treat these conditions. This remedy is mentioned in texts from ancient Egypt, Sumer and Assyria. The Cherokee and other Native Americans used an infusion of the bark for fever and other medicinal purposes. In 2014, archaeologists identified traces of salicylic acid on 7th
Trademark is registered. Specialized types of trademark include certification marks, collective trademarks and defensive trademarks. A trademark which is popularly used to describe a product or service (rather than to distinguish the product or services from those of third parties) is sometimes known as a genericized trademark. If such a mark becomes synonymous with that product or service to the extent that the trademark owner can no longer enforce its proprietary rights, the mark becomes generic. A "trademark look" is an informal term for a characteristic look for a performer or character of some sort. It is usually not legally trademark