Descriptions for B81 and notes/indexes are displayed on this screen.


Note(s)
    This class covers microstructural devices or systems, including at least one essential element or formation characterised by its very small size, typically within the range of 10-4 to 10-7 meters, i.e. its significant features can not, in at least one dimension, be completely discerned without the use of an optical microscope.[7]In this class, the following expressions are used with the meaning indicated:
      "microstructural devices" covers:
        micromechanical devices comprising movable, flexible or deformable elements; andthree-dimensional structures without movable, flexible or deformable elements, comprising microformations designed to accomplish an essential structural function for interacting with their environment, as opposed to purely electronic or chemical functions, regardless of whether the structures are combined with microelectronic devices or formed from specific materials;
      "microstructural systems" covers:
        systems of cooperating microstructural devices; andmicroelectro-mechanical or microopto-mechanical systems, which combine on a common substrate the specific features of microstructural devices and electrical or optical components, e.g. for controlling, analysing or signalling the functioning of microstructural devices.