The method invention of a new surfactant belongs to the method innovation in the invention patent, and can only be authorized after preliminary examination and substantive examination. A product of automobile lubricating oil belongs to the product innovation in the invention patent, and can only be authorized after preliminary examination and substantive examination. The garbage can with its own disinfection and sterilization system belongs to the product, method or its improved new technical scheme, and should belong to the category of invention patent. The design of wavy car door handle is a new design integrating color, modeling and pattern, which has aesthetic feeling and is suitable for industrial application, so it belongs to appearance design. A design can only be granted a patent right after a preliminary examination.