What items must be included in the text of the invention patent specification? Which sub-entries?

The first line of the first page of the specification shall indicate the name of the invention-creation, which shall be consistent with the name in the request and centered around. There should be a blank line between the name of the invention-creation and the text of the specification. The format of the manual should include the following five parts, and the title should be written in front of each part:

Technical field

technical background

Summary of the invention

Brief description of drawings

expand on

If there are no drawings in the specification, the text of the specification does not include the drawings and their corresponding titles. The text part of the manual can have chemical formula, mathematical formula or table, but there can be no illustrations.