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Q74. Physical-Chemical Data

Q74. Physical-Chemical Data
 What physical-chemical data are required in Japanese applications to support an invention of a composition which is a mixture of known ingredients?

A74. The physical-chemical data should be usually required in the specification for an invention of a composition. The chemical field is the technical field where the effect of a composition cannot be readily expected based on the components constituting the composition. A composition invention is usually invented for providing a new and useful composition for some intended purpose. Such usefulness is usually proved by the physical-chemical property of the composition relating to such intended purpose. The kind of the physical-chemical property of the composition should vary depending on the kind of the composition. For example, please assume that an adhesive composition has been invented, which provides a stronger adhesive property than the conventional adhesive composition. In order to confirm that the claimed adhesive composition is indeed useful as an adhesive composition, it is natural that the specification should contain physical-chemical data based on which the adhesive strength of the claimed invention can be evaluated.